Abstract
A cable system is provided which is configured with both electric wires and a fluid conduit running through the axial passage of a surrounding flexible sheath of the cable. The system allows for communication of electricity over the wires for electrical circuits and concurrent communication of a fire ignition suppressant fluid or gas through the fluid conduit, to all points in an electric circuit using the cable. Suppressant chambers may be located in or on or engaged with junction boxes in such circuits to locally extinguish electrical fires.
Claims
1. A cable system comprising: a cable, said cable having a flexible sheath, said flexible sheath having an axial pathway running a length of said cable between a first end of said cable and a second end of said cable; said cable having one or a plurality of electrically conductive wires running through said axial pathway of said sheath for said length of said cable; said cable having a fluid conduit within said sheath and running said length of said cable, said fluid conduit having a sidewall surrounding an axial passage thereof; wherein said length of said cable is engageable to communicate electricity through said conductive wires between said first end and said second end of said cable and to concurrently communicate a fire suppressant within said fluid conduit, between said first end of said cable and said second end of said cable; said electrically conductive wires at one end of said cable, adapted for an engagement with a junction box; said electrically conductive wires having an insulation coating circumferentially engaged thereon, said insulation having a first melting temperature; and said sidewall surrounding said axial passage of said fluid conduit being formed of material having a second melting temperature, said first melting temperature exceeding said second melting temperature, whereby a melting of said sidewall causes an emission of said fire suppressant from within said axial passage to any location along said length of said cable when a temperature adjacent thereto, exceeds said second melting temperature.
2. The cable system of claim 1 additionally comprising: said flexible sheath formed of material having said second melting temperature; apertures running sequentially along said flexible sheath from said first end of said cable to said second end of said cable; said apertures defining passages between said axial pathway of said sheath and areas surrounding an exterior of said sheath; and said fire suppressant emitted from said fluid conduit within said sheath communicable to said location surrounding said exterior of said sheath, through said passages.
3. The cable system of claim 2 additionally comprising: said electrically conductive wires at one end of said cable, operatively engageable with a junction box; said axial passage of said fluid conduit at one end of said cable engageable in a sealed engagement with an internal cavity of a suppressant chamber connected with said junction box; said internal cavity forming a local reservoir of a fire suppressant communicated from said axial passage of said fluid conduit from a fire suppressant supply; said suppressant chamber being formed of material having said second melting temperature; and whereby a melting of said suppressant chamber causes an emission of said fire suppressant from within said internal cavity thereof, when a temperature adjacent said suppressant chamber exceeds said second melting temperature.
4. The cable system of claim 3 wherein said suppressant chamber is in a removable engagement to said junction box.
5. The cable system of claim 4 wherein said removable engagement if formed by a slot in said junction box sized for a sliding engagement of said suppressant chamber therein.
6. The cable system of claim 5 wherein said suppressant chamber is formed by a plurality of winds of said fluid conduit on a track which is removably engageable with said slot.
7. The cable system of claim 3 wherein said internal cavity of said suppressant chamber is formed within one or more sidewalls of said junction box which surround and define an interior cavity of said junction box.
8. The cable system of claim 7 additionally comprising: projections extending from said one or more sidewalls of said junction box which surround and define an interior cavity of said junction box; and said interior cavity extending into said projections.
9. The cable system of claim 2 additionally comprising: said fluid conduit at said first end of said cable being engaged to a fluid reservoir within a housing; said electrically conductive wires at said first end of said cable electrically connected to a plug extending from said housing which is adapted for engagement with a first electric socket; said electrically conductive wires at said second end of said cable engaged with a second electric socket; and whereby said cable defines and extension cord between said first socket for a plug which is engageable with said second electric socket.
10. The cable system of claim 1 additionally comprising: said electrically conductive wires at one end of said cable, operatively engageable with a junction box; said axial passage of said fluid conduit at one end of said cable engageable in a sealed engagement with an internal cavity of a suppressant chamber connected with said junction box; said internal cavity forming a local reservoir of a fire suppressant communicated from said axial passage of said fluid conduit from a fire suppressant supply; said suppressant chamber being formed of material having said second melting temperature; and whereby a melting of said suppressant chamber causes an emission of said fire suppressant from within said internal cavity thereof, when a temperature adjacent said suppressant chamber exceeds said second melting temperature.
11. The cable system of claim 10 wherein said suppressant chamber is in a removable engagement to said junction box.
12. The cable system of claim 11 wherein said removable engagement if formed by a slot in said junction box sized for a sliding engagement of said suppressant chamber therein.
13. The cable system of claim 12 wherein said suppressant chamber is formed by a plurality of winds of said fluid conduit on a track which is removably engageable with said slot.
14. The cable system of claim 3 wherein said internal cavity of said suppressant chamber is formed within one or more sidewalls of said junction box which surround and define an interior cavity of said junction box.
15. The cable system of claim 14 additionally comprising: projections extending from said one or more sidewalls of said junction box which surround and define an interior cavity of said junction box; and said interior cavity extending into said projections.
16. The cable system of claim 1 additionally comprising: said fluid conduit at said first end of said cable being engaged to a fluid reservoir within a housing; said electrically conductive wires at said first end of said cable electrically connected to a plug extending from said housing which is adapted for engagement with a first electric socket; said electrically conductive wires at said second end of said cable engaged with a second electric socket; and whereby said cable defines and extension cord between said first socket for a plug which is engageable with said second electric socket.
Description
BRIEF DESCRIPTION OF DRAWING FIGURES
(1) The accompanying drawings, which are incorporated herein and form a part of the specification, illustrate some, but not the only, nor exclusive examples of embodiments and/or features of the disclosed system. It is intended that the embodiments and figures disclosed herein are to be considered illustrative of the invention herein, rather than limiting in any fashion. In the drawings:
(2) FIG. 1 depicts a perspective view of a junction box employable with the cabling herein, depicted for example in FIGS. 8-17.
(3) FIG. 2 shows a front view of the junction box of FIG. 1 engaged in operative engagement with the cabling herein carrying both electric wires and one or more fluid conduit lines carrying fire suppressant.
(4) FIG. 3 displays a perspective view of one preferred mode of the cabling of the system herein which is formed with wires for electric communication in parallel adjacent positioning with at least one fluid conduit configured for fluid or gas flow therethrough, such as a fire suppressant fluid.
(5) FIG. 4 shows an electric junction box configured for engagement with the cabling herein, showing in exploded view, a suppressant chamber engaged as a cover.
(6) FIG. 4a depicts the junction box of FIG. 4, assembled.
(7) FIG. 5 depicts a gang box configured for positioning of electric switches, having a suppressant chamber with opposing openings, adapted for engagement with the electric wires and fluid conduit of the cabling herein.
(8) FIG. 6 shows an example of the cabling herein employed as a fire suppressant system having both electrical circuits and fluid conduits carrying fire suppressant, running from a central position or switch room.
(9) FIG. 7 depicts a mode of employment of the cabling herein in a fire suppressant system, showing the electrical buss for electric circuit breakers and the retardant supply buss positioned to route retardant through the fluid conduit of the cabling, where both the fluid conduit and electric wires run in the cabling in a substantially parallel communication to different electric circuits.
(10) FIG. 8 shows the cabling herein having a fluid conduit with wiring positioned in the sidewall forming the fluid conduit and a surrounding flexible sheath.
(11) FIG. 9 shows the cabling herein formed with a fluid conduit and wiring running through the axial passage of the surround flexible sheath.
(12) FIG. 10 depicts the cabling herein in another mode with a plurality of electric wires and at least one fluid conduit running axially through the surrounding sheath which has perforations or sequential aligned apertures formed therein.
(13) FIG. 11 shows the cabling of the system herein wherein the plurality of wires carried in the sheath axial passage is four, and a single fluid conduit runs parallel thereto.
(14) FIG. 12 depicts a mode of the device wherein electric wires are positioned within the material forming the fluid conduit in a unitary structure of cables and fluid conduit.
(15) FIG. 13 is an end view of the mode of cabling of FIG. 12.
(16) FIG. 14 shows that the cabling can carry both a plurality of electric wires as well as one or more communications cables which run within the axial passage of the surrounding sheath along with the fluid conduit.
(17) FIG. 15 depicts the cabling of FIG. 14 showing perforations or sequentially aligned apertures formed in the sheath providing the axial passage for the fluid conduit and wires.
(18) FIG. 16 shows a mode of the cabling herein having an flexible but armored sheath surrounding the axial passage carrying at least one fluid conduit and one or the shown plurality of wires for electric current.
(19) FIG. 17 depicts the cabling herein, wherein the electric wires are carried in the sidewall forming the fluid conduit herein, where the wires may be extruded with the fluid conduit, or pressed into channels formed in the exterior of the fluid conduit.
(20) FIG. 18 shows differing connectors for engaging the fluid conduit of different cables for fluid flow therebetween.
(21) FIG. 19 depicts a sliced view showing an interior passage of a fluid conduit in a sealed engagement with a fluid connector such as in FIG. 18.
(22) FIG. 20 shows exemplars of a sub panel, in exploded view, which is adapted for engagement with both the wires, and the fluid conduit of the cabling herein, to provide electric power to the buss and fire suppressant to the fluid dispenser.
(23) FIG. 21 shows the sub panel of FIG. 20 assembled and ready for engagement with both the wires and fluid conduit of the cabling herein.
(24) FIG. 22 shows the cabling herein with the wires and fluid conduit of the cabling in operative engagement with a junction box, and fluid dispenser showing a fluid dispensing sprayer engageable with the fluid dispenser.
(25) FIG. 23 shows the cabling of the system herein, connected in a circuit for both the fluid conduit and wiring.
(26) FIG. 24 shows the cabling of the system herein providing both wiring and a fluid conduit operatively engaged to provide fire suppressive material for both socket connectors as well as overhead dispensers of fire suppressant, such as in a server room.
(27) FIG. 25 depicts a mode of the cable for the system herein having romex type wires running the axial passage of the surrounding sheath along with the fluid conduit.
(28) FIGS. 26A-26C show views of a mode of the cable herein wherein the wire running within the axial passageway within the sheath of the cable is formed in a tubular fashion with wires within insulation which is configured to form a channel providing the fluid conduit.
(29) FIGS. 27A-27B depict views of a mode of the cable for the system herein wherein the wires are in an encircling wind in engagements with the exterior of the polymeric material forming a fluid conduit which runs through the axial passageway of the sheath of the cable.
(30) FIG. 28 shows a junction box adapted for engagement of a socket therein and showing a chamber for holding retardant fluid therein which is slidably engageable into the junction box and has connectors 31 for provision of retardant fluid flow into and out of the chamber.
(31) FIG. 29 depicts a junction box of the system herein which has the fluid chamber formed as an upper portion of the junction box wherein electrical connections, such as to a socket, are positioned within the cavity of the junction box at a position underneath the fluid chamber.
(32) FIGS. 30-30A show front and rear views of an especially preferred mode of a junction box of the system herein which is formed in a unitary structure of chamber and junction box wherein the formed chamber surrounds the internal cavity of the junction box which may be adapted for mounting or housing any electric connection such as the depicted socket engaged therein.
(33) FIG. 31 depicts a junction box of the system herein similar in function to that of FIG. 30 where hollow sidewalls, surrounding the interior cavity which is adapted for the appropriate electric connection and fluid conduits communicate fluid through the passages in the hollow sidewalls.
(34) FIG. 32 shows a mode of a junction box of the system herein wherein the internal cavity of the junction box is accessible through a first side opening by removal of a conventional cover and which has a fluid chamber engaged to the opposing side opening which is adapted with connectors for fluid flow therethrough.
(35) FIG. 33 depicts a junction box configured with one or a plurality of openings for passage of wires therethrough operatively into and out of the internal cavity and showing an insertable circuitous fluid tube holder for the tube which has connectors on both ends for operative connection to the fluid conduit.
(36) FIG. 34 shows the device as in FIG. 33, assembled with the fluid tube holder and tube engaged thereon operatively positioned within an internal cavity of the junction box.
(37) FIG. 34A depicts a junction box configured with one or a plurality of openings for passage of wires therethrough similar to FIG. 33, and showing an insertable circuitous fluid tube holder engageable to form a circuitous path for the tube through the junction box wherein it forms the reservoir.
(38) FIG. 34B shows the device as in FIG. 34A assembled with the fluid tube holder and tube wound thereon, operatively positioned within an internal cavity of the junction box.
(39) FIG. 35 depicts an extension cord configured with a fluid conduit for fire retardant of the system herein wherein retardant for the fluid conduit can be provided by an onboard pressurized supply or by a plug and receptacle adapted to sealably engage and communicate the retardant fluid from the fluid conduit communicating to the junction box.
(40) FIG. 36 depicts the extension cord similar to that of FIG. 35 wherein the cord housing engages with the wall socket.
(41) FIG. 37 shows a component of the system herein operating in a similar fashion to that of FIGS. 30-31 showing a housing formed to surround an electric inverter wherein the housing sidewall surrounding the internal cavities and components therein are hollow and form passages for fluid retardant therein.
DETAILED DESCRIPTION OF THE INVENTION
(42) Now referring to the drawings in FIGS. 1-37, wherein similar components are identified by like reference numerals, there is seen in FIG. 1, and other drawings where components are configured for operative engagement with the cabling 11 herein, to provide one or a plurality of wires and at least one fluid conduit, in the same cable 11 surrounded by a sheath 24 or cover. As noted, the cable 11 herein is employable with other systems where the parallel and concurrent positioning of both a fluid conduit 26 and electric wires 28 along the entire path of the same cable 11 would be beneficial.
(43) As shown in FIG. 1, when the cable 11, such as in FIG. 3 or FIGS. 8-17 herein, is employed to provide a combination electric wiring system and fluid passage for a fire suppressant system, the cable 11 is operatively engageable with other components in the system such as a junction box 12 or gang box or terminal box component, which is meant as any electrical box or the like used to join wires, engage sockets, lighting, sub circuits or for other purposes for such electrical boxes. The junction box 12 may be configured to house both electric connections therein such as to or between other wires 28, and/or an electric socket 16, and/or a fire suppressant component or chamber 18, or other fire suppression fluid or gas emitter.
(44) The cable 11, when employed in a fire suppressing electrical system 10, is deployable in a variety of configurations, such as with one or more gang boxes or junction boxes 12, shown in FIGS. 1 and 2 and 5, for example. Such a junction box 12, surrounds and secures the electrical connections between two or more of the wires 28 which enter or exit through one or more apertures defining openings 14.
(45) Such junction boxes 12 are known by other names and surround connections mid circuit and are also used for sockets, light fixtures, and a wide variety of connections. However, this description should not be limiting as junction box 12 should be considered to be any housing where cables are joined, divided, connected to an electric device, or for other purposes. Although the openings 14 shown herein in the system 10 consist of circular apertures formed in the junction box 12, alternative constructions can optionally include specific male or female connectors for easy disassembly and access.
(46) As an example, the junction boxes 12 may be configured to engage with conventional sockets 16 or switches 17 of electric fixtures, and/or wire 28 connections with wire nuts, terminal blocks, and other conventionally employed electrical components and junctions to configure the system for engagement of components to the electrical power within.
(47) To inhibit the spread of electrical fires, in the system herein, junctions between conduits and wiring in the electrical system such as at any type of junction box 12, may also include a suppressant chamber 18. The suppressant chamber 18 is configured to receive and hold a supply of fire suppressant or retardant such as Halon gas from the fluid conduit 26 which communicates with a central supply under pressure. The suppressant chamber 18 holds such fire suppressant or retardant within an internal cavity defined by the walls forming the suppressant chamber 18. The suppressant chambers 18 may be configured to hold a local supply of retardant therein, should the fluid conduit 26 supplying the system fail, thus maintaining a local sealed supply of retardant or suppressant in each chamber 18 if the fluid conduit 26 is compromised. This can be done using valves on the inlet 29 and an outlet 29 of the suppressant chamber 18. Or the suppressant chamber 18 may be provided a fluid supply from the fluid conduit 26 which is communicated from a reservoir of suppressant.
(48) The system 10 is configured such that any damage to the junction box 12 or its contents, through excess heat or fire, such as caused by electrical short or over-heated wiring 28, will melt and cause a rupture of all or portions of the suppressant chamber 18. Upon the formation of a heat induced rupture, the retardant or suppressant within or supplied to the suppressant chamber 18, is communicated to the fire or overheating area. As shown, the fluid conduit 26, can supply each suppressant chamber 18 and junction box 12, with a continuous pressurized supply of retardant or fire suppressant which will continue to extinguish or prevent a fire from getting larger. As noted, all, or at least portions of the fluid conduit 26 itself, can be formed of material adapted to melt and rupture at a threshold temperature, and communicate the fire suppressant to adjacent areas anywhere the cable may be located in a wiring system, such as in-between junction boxes 12 and fixtures and a circuit breaker buss.
(49) In one preferred mode of the system 10, all or portions of the suppressant chamber 18 can be composed of material, such as HDPE, pfa, nylon or similar polymeric material with a wall thickness which is calculated to melt and or otherwise open when exposed to a temperature over a determined safe level or when exposed to fire. This will cause a continuous dispensing of fire retardant or suppressant to extinguish the fire, or prevent one, by preventing oxygen from reaching the heat source. With regard to the wall thickness, it can calculate to fail, due to the internal pressure within the suppressant chamber 18, when heated to a point the wall will distend and fail.
(50) Shown in FIGS. 2 and 4 and 5, the junction box 12 is adapted to operatively engage with the fluid conduit 26 either through a conduit opening 20, or by communication of the entire cable 11 through an opening 14. Each suppressant chamber 18 is configured for a sealed engagement with the fluid conduit 26 running through the cable 11 herein, to provide the suppressant chamber 18 with a fluid or gas suppressant supply.
(51) For such engagement for example, the suppressant chamber 18 can be configured with one or a plurality of flanges 19 with axial passages into the interior cavity of the suppressant chamber 18, which act as inputs or outputs for fluid to continue the communication of the suppressant through the chamber 18 to subsequent chambers 18 along a fluid circuit with connections therebetween by the fluid conduit 26 running through the axial passage 23 of the sheath 24 of the cable 11 along with the wires 28.
(52) Preferably, the junction box 12 should include a suppressant window 22 for visual inspection to confirm a local supply of retardant or suppressant is present within the suppressant chamber 18 which is viewable through the window 22.
(53) One or a plurality of flow and/or pressure sensors 31 may be placed in communication with suppressant axial passage 23 running through the fluid conduit 26 such as in FIG. 7. For example, sensors 31 such as pressure supply meters, flow sensors, or pressure sensors, shown in FIG. 7 and/or other electronic sensors which may discern a pressure drop in a fluid conduit 26 circuit, can be operatively engaged with each fluid circuit which parallels an electric circuit running through a cable 11.
(54) The sensor data can either be displayed proximal to the system 10, through an external light or screen, or routed to a central safety video display panel, for efficient and simultaneous monitoring and diagnosis of all systems 10, or in a particularly preferred mode, such as shown in FIG. 7 for example, a signal from the sensors 31 will be communicated in a wired or wireless fashion to a circuit breaker 33 powering the same wire or wires 28 running through a cable 11 with a fluid conduit 26. The signal will cause the circuit breaker 33 to open, and switch off electric power to the wires 28 in the cable 11 of the circuit where suppressant is being dispensed and which has caused the sensor 31 to generate a signal. Remote display panels, if displaying a sensor signal generation, should contain means to uniquely identify the location and circuit of the sensor 31 generating it. Such a signal could be generated by a weight sensor 31 to allow the system to monitor the weights of the fire suppressant tanks and should the weights fall below a certain threshold, it can shut that circuit down as well.
(55) Depicted in FIG. 3 is one example of the cable 11 herein, showing the sheath 24 forming an axial passageway 23 which provides a pathway for one or more wires 28, and at least one adjacent running fluid conduits 26, as shown, although a plurality of fluid conduits 26 can be included in a cable 11.
(56) Formation of the cable 11 with wires 28 and a fluid conduit 26 running in an axial passageway 23 defined by the surrounding sheath 24, allows for easy instillation of the cable 11 in a fashion much like conventional conduit routed electrical systems, thereby allowing concurrent positioning of both wires 28 and a fluid conduit 26 throughout the system.
(57) As shown in FIGS. 3, 10, and 15, the sheath 24 may include an array of aligned apertures 32 which allow for easier trimming during installation. Further, these apertures 32 provide vents to communicate fire suppressant from the fluid conduit 26 if a fire or heat melts the fluid conduit 26 to a rupture in between junction boxes 12. The fluid conduit 26, as noted, should be made of any non-reactive, durable material such as polymeric material, nylon, PVC or fiberglass, or most preferably HDPE or PFA, which has a melting point which will cause a rupture the fluid conduit 26 at an appropriate temperature above the operating temperature of the wires 28, to extinguish or retard a fire if needed. The flexible sheath 24 would also preferably be formed of a similar material to that of the fluid conduit 26, such that it will not melt or rupture in areas where the fluid conduit 26 is also adapted to operate which may be hot.
(58) Shown in FIGS. 4 and 4a is a mode of the junction box 12 which is depicted with the suppressant chamber 18, configured to engage and provide a removable cover for the internal cavity of box 12. Such would work well at junctions between main and sub circuits of the electrical system.
(59) In FIG. 5 there is shown a gang box or junction box 12 configured for engagement of electric switches 17. This mode of the junction box 12 is engaged with a suppressant chamber 18 with connections 29 on both ends, for the fluid conduit 26 for a throughput of suppressant supplied by the fluid conduit 26 through the chamber 18 and on to a subsequent chamber 18. Windows 22 in the faceplate allow for viewing of the contents of the suppressant chamber 18.
(60) In FIG. 6 there is depicted an example of the system 10 herein using the cable 11 for positioning of both electrical circuits of the wire 28 and fire suppressant circuits of the fluid conduits 26 running to remote positions from a main electrical connection buss and retardant supply buss.
(61) Shown in FIG. 7, as noted above, shows the system where various circuits of the fluid conduit 26 of each cable 11 connect to a pressurized suppressant supply in a fluid buss. The wires 28 from each respective cable 11 connect to one of the breakers 33 of an electric buss 35. Gauges 39 and/or sensors 31 are engaged to suppressant circuits of each fluid conduit 26 and will sense the current pressurization level in each such circuit formed by a fluid conduit 28 in a cable 11. The fluid conduit 26 and wires 28 of each cable 11 are routed through the axial passageway 23 of the sheath 24 with the wires 28 therein, thereby providing parallel and concurrent communication of electrical power and fluid such as fire suppression along the entire route of each individual circuit of the electrical system.
(62) As noted, FIG. 8 shows the cable 11 herein having a fluid conduit 26 and a plurality of wires 28, both positioned in axial passage 23 of a surrounding flexible sheath 24 holding the components of the cable 11 adjacent. In the mode of FIG. 8, the material forming the sidewall of the fluid conduit 26, is engaged with the plurality of wires 28 during extrusion of the fluid conduit 26. Thus, the fluid conduit 26 and plurality of wires 28 running through the material forming it, are a unitary structure of wires 28 and fluid conduit 26.
(63) In FIG. 9 is shown the cable 11 or cabling herein configured with a fluid conduit 26 and wires 28 running through the axial passage 23 of the surround flexible sheath 24. The cable 11 so formed, can be wound into rolls or spools which can be unwound and installed in a conventional fashion thereby encouraging widespread use.
(64) FIG. 10 depicts the cable 11 herein in another mode with a plurality of three electric wires 28 and at least one fluid conduit 26 running axially through the surrounding sheath 24. The wall of the sheath 24 includes aligned and sequentially positioned apertures 32 which as noted allow for easier cutting of the cable 11 as well as provide vents for passage of fire suppressant from the interior of the sheath 24.
(65) FIG. 11 shows the cable 11 of the system herein wherein the plurality of wires carried in the sheath 24 axial passage is four, and a single fluid conduit 26 runs parallel thereto.
(66) FIGS. 12 and 13 show a mode of the cable 11 wherein electric wires 28 are positioned during extrusion within the material forming the fluid conduit 26, and form the fluid conduit 26 and wires 28 in a unitary structure.
(67) FIG. 14 shows that the cable 11 or cabling with a plurality of electric wires 28 as well as one or more communications cables 28a which run within the axial passage of the surrounding sheath 24 along with the fluid conduit 26. As with all other modes of the formed cable 11, it can be wound on large reels and dispensed during installation.
(68) FIG. 15 shows the cable 11 of FIG. 14 having the sequentially positioned apertures 32 formed in the sheath 24 providing the axial passage for the fluid conduit 26 and wires 28.
(69) In FIG. 16 is shown the cable 11 or cabling herein having an armored sheath 24 surrounding the axial passage carrying at least one fluid conduit 26 and one or the shown plurality of wires 28 for electric current.
(70) FIG. 17 depicts the cable 11 or cabling herein, wherein the electric wires 28 are carried in the sidewall forming the fluid conduit 26 herein. As shown, the wires 28 may be pressed into channels formed in the exterior of the sheath 24 surrounding the fluid conduit 26.
(71) FIG. 18 shows differing connectors 31 for sealed engagement between ends of the fluid conduits 26, allowing a number thereof to be fluidly engaged.
(72) In FIG. 19 is depicted a sliced view showing an interior passage of a fluid conduit 26 in a sealed engagement with a fluid connector 31 such as any of those in FIG. 18.
(73) In FIGS. 20-21 are depicted exemplars of a sub panel junction box 12 of an electric system, which is adapted for engagement with both the wires 28, and the fluid conduit 26 of the cable 11 herein, to provide electric power to the buss and fire suppressant to the fluid dispenser. The suppressant chamber 18 in the mode shown, has multiple inlet and outlet flanges 19 to allow the flow of suppressant to flow into and through the chamber 18 downline to the rest of the circuit.
(74) FIG. 22 shows the cable 11 herein with the contained wires 28 and fluid conduit 26 of the cable 11, in operative engagement with a junction box 12, and fluid dispenser 18 engaged with a fluid dispensing sprayer 38 adapted to direct a downward flow of suppressant when activated by heat above a predetermined level. Such would be employed for example on a ceiling of a room to be protected.
(75) Shown in FIG. 23 is a depiction of the cable 11 herein, installed in a structure and providing both wiring 28 and a fluid conduit 26 which may be operatively engaged with a junction box 12 hosting a socket 16, to provide fire suppressive material through the fluid conduit 26 to the depicted junction box 12 and a subsequent junction box 12 or other point serviced by the cable 11 extending therefrom.
(76) An example of an installation of the system is shown in FIG. 24 where the cable 11 provides the path for fire suppressive fluid for both socket connectors as well as overhead dispensers or sprayers 38 of fire suppressant, such as in a server room. The cable 11 may be any derivation of cable 11 shown and described herein as may the junction boxes 12 and other components.
(77) FIG. 25 depicts a mode of the cable 11 for the system herein configured with romex type wires 28 running the axial passageway 23 of the sheath 24 surrounding the components of the cable 11. The fluid conduit 26 having an axial passage 25 for retardant communication therethrough is shown running adjacent the wires 11 formed into the romex with all running through the axial passageway 23 of the sheath 24 which is shown with apertures 32 therein.
(78) The cable 11 herein as noted may be configured to form the axial passage 25 therein or position the fluid conduit 26 having an axial passage 25 therein which runs axially through the cable 11. This is shown in FIGS. 26A-26C which depict versions of the cable 11 employable herein wherein the wires 28 running within the axial passageway 23 within the sheath 24 are extruded or molded into in polymeric insulation material extruded to define sidewalls surrounding an axial cavity 27. This axial cavity 27 itself may be employed for the axial passage 25 in substitute of a fluid conduit 26, or as shown in FIG. 26C the fluid conduit 26 can run axially through the axial cavity 27.
(79) Another mode of the cable 11 employable with the system herein is shown in FIGS. 27A-27B. As shown, some or all of the electric wires 28 may be engaged in a spiral wound or encircling winding engagement with the exterior of the polymeric material forming a fluid conduit 26. This spiral winding has been found in experimentation to provide excellent phase separation to cancel out flux and minimize electric noise generation. The fluid conduit 26 so formed is provides the axial passage 25 for retardant communication through the system as needed. The wires 28 in this spiral winding or encircling engagement with the sidewall of the polymeric material forming the fluid conduit 26 may be co-molded therein or as shown, may be frictionally or adhesively engaged within slots 42 formed to wind around the exterior circumference of the fluid conduit 26. The sheath 24 with apertures therein would surround the wire-encircled fluid conduit 26 in same fashion as in other modes shown herein.
(80) Shown in FIG. 28 is a mode of the junction box 12 which is configured to surround an electric connection such as a switch or depicted socket 16 within the cavity 13 surrounded by sidewall of the junction box 12. In this configuration, a chamber 18 for holding a local supply of retardant fluid therein, is slidably engageable into the cavity 13 formed in the junction box 12. As shown the chamber 18 has at least one connection 29 as an inlet for retardant into the chamber 18 and preferably has two connections 29 to allow a pressurized flow of retardant into, through, and out of the chamber 18. A window 22 formed into the socket or switch cover allows for both a viewing of the chamber 18 for visual confirmation of the presence of retardant therein, and for disbursement of fire retardant from the suppression chamber 18 and into non concealed areas such as interior room space areas surrounding the junction box 12, should temperatures in that surrounding area, reach the melting point of the material forming the chamber 18 within the area communicating through the window 22.
(81) In FIG. 29 is shown a junction box 12 of the system herein which has the fluid chamber 18 engaged to form an upper portion and top sidewall of the junction box 12 wherein electrical connections such as to a socket 16 are positioned within the cavity 13 of the junction box 12 defined by the sidewalls of the junction box 12. As noted above, by junction box 12 wherever used herein, is meant any housing employed in an eclectic wiring system wherein electric connections are made between wires 28 carrying electric current be those connects by wire nuts, crimping, electric receptacles such as a socket 16 or switch, or any other conventional electric connection positioned within the cavity 13 of the junction box 12.
(82) As shown in FIG. 29, in this mode of a junction box 12, with the suppressant chamber 18 forming one sidewall of the cavity 13, heat within the cavity 13 sufficient to melt the wall of the suppressant chamber 18, formed as part of the junction box 12 and in communication with the cavity 13, will cause fire retardant to flood the cavity 13. Further, a projecting portion 37 of the suppression chamber 18 formed as part of the junction box, projects therefrom in a position to project into and through the window 22. This positions the projecting portion 37 of the suppression chamber 18 within the window 22. Thus the projecting portions 37 can be made to project through and forward of the window 22 in the cover and into surrounding open room spaces where electrified content items may connect to junction box.
(83) In FIGS. 30-30A are depicted front and rear views of an especially preferred mode of a junction box 12 of the system herein. The junction box 12 is shown with transparent sidewalls 15. As can be seen, the sidewalls 15 defining the cavity 13 of the junction box 12 have connected passages 21 within some or all of the sidewalls 15 which define the cavity 13 of the junction box 12. Connections 29 for provision of fire retardant communicate with the passages 21 on one sidewall to communicate the fire retardant into the passage 21 of at least one sidewall, and preferably with passages 21 in other sidewalls 15 surrounding the cavity 13 such that fire retardant will flow into and through all of the passages 21 where positioned in sidewalls 15 of a junction box 12.
(84) This mode of the system herein configures portions of the junction box 12 itself to form the suppression chamber 18 in a unitary structure. In operation, should the electric connection within a cavity 13 of a junction box 12 overheat, at least one of the surfaces of the sidewall 15 defining the suppressant chamber within the junction box 12 and facing the cavity 13, will melt and cause a communication of fire retardant from a passage 21 in that sidewall 15 into the cavity 13. Alternatively, portions of common walls between the sidewall 15 and the cavity 13 may be fully or partially formed of material adapted to melt at the temperature slightly higher or lower than that of the insulation on the wires and melt when temperature inside the cavity 13 exceeds the melting temperature of the 26 conduit.
(85) Further shown in FIG. 30 is a projecting portion 37 of the suppression chamber formed by the junction box 12 itself. This projecting portion 37 in FIG. 30 is sized to project into or through the windows 22 in the cover plate which is shown covered by a hood 43. Should the projecting portion encounter a temperature high enough to melt, fire retardant from the suppression chamber formed within the junction box 12 walls and communicating to the projecting portion 37, will be directed downward by the hood 43.
(86) In FIG. 31 is shown a junction box 12 of the system herein similar in operation to that of FIG. 30, where internal passages 21 at least one and preferably a plurality of the sidewalls 15 surrounding the interior cavity 13 of the junction box 12, are in operative communication with the axial passage 25 of the operatively engaged fluid conduit 26. In this fashion, fire retardant from the axial passage 25 communicates under pressure into one or more connected passages 25 formed within the sidewalls 15 surrounding the interior cavity 13 forming the suppression chamber 18 within the walls of the junction box 12 which surround the interior cavity 13 and any electric connection therein. As in FIG. 30 the suppressant chamber 18, is thus at least partly within the walls of the junction box 12 itself which are adapted to melt at the noted temperature levels herein.
(87) Additionally shown in FIG. 31 are the series of pyramidic or pointed projections 49 formed into the surfaces of the sidewall 15. Should resistive heat or fire develop within or adjacent the junction box 12 sufficient to melt the sidewall 15, the pointed projections 49 will cause a directional flow of fire suppressant gas or fluid therethrough as they individually melt. These projections 49 can be positioned within the interior cavity 13 and/or on the exterior surfaces of the junction box 12 whereby fire retardant can be projected to areas adjacent the junction box 12. These triangular projections 49 allow for the charged suppression space to be closer to connection points or energized components as so desired.
(88) In FIG. 32 is depicted a junction box 12 of the system herein wherein the internal cavity 13 of the junction box 12 is accessible through a first side opening 44 by removal of a conventional cover plate 46. Covering the second side opening 50 opposite the first side opening 44 is a suppression chamber 18 adapted to engage with the second side opening 50 and enclose the electric connections within a closed internal cavity 13.
(89) As depicted, a side surface 52 facing the internal cavity 13, has fluid connections 29 adapted to engage the fluid conduits 26 in the circuit to communicate fire retardant through the chamber 18. Also shown, formed into the side surface 52, are recesses 54 adapted to hold electrical connections between two wires 28 such as wire nuts 56 secured over time. Further depicted are metal conduits 51 showing that the system herein can route the cable surrounded by the sheath 24 through metal conduits 51 in a commercial setting requiring such. Additionally depicted is a polymeric diaphragm 53 which fills an aperture in the cover plate 46. This diaphragm 53 may be formed of a polymeric or other material adapted to melt at the appropriate temperature noted herein, to allow disbursement of fire retardant through the opening. The diaphragm also can be configured to have a burst pressure less that the enclosure to protect the enclosure structural integrity should over pressurization of the circuit occur thereby preventing the enclosure from structural failure from suppressant over-pressurization release.
(90) In FIG. 33, is depicted a junction box 12 in a conventional fashion having sidewalls 15 which surround the internal cavity 13 and where punch-out portions of the sidewalls 15 are shown providing one or a plurality of openings for passage of wires into and out of the internal cavity 13. Additionally depicted is an insertable track 41 routing winds of a fluid tube 58 which may be a continuation of, or be engaged at both ends to, the fluid conduit 26 to communicate fire retardant into and through the length of the fluid tube 58. The fluid tube 58 may be pre-positioned or slid into a removable engagement with the junction box 12 and internal cavity through, an elongated slot 60 in one sidewall. Of course the track 41 may also engage a portion of the fluid conduit 26 from the cable 11 which would be engaged thereon in the circuitous route. The assembled mode of the junction box 12 of FIG. 33 is shown in FIG. 34 wherein the track 41 has been operatively engaged within the slot 60.
(91) Shown in FIG. 34A is a junction box 12 configured with one or a plurality of openings for passage of wires into the cavity 13 and through the junction box 12 similar to FIG. 33. Also shown is the slot 60 configured for insertion of the track 41 to hold a fluid tube in a circuitous path thereby forming the suppression chamber from windings of the fluid conduit 26 in a similar fashion to that of FIG. 33. Such might work well in retrofitting an older electrical system.
(92) The engagement of the track 41 within the slot 60 is shown in FIG. 34B. As depicted, the suppression chamber is formed by a winding of fluid conduit 26 on the track 41 which has been inserted operatively into the slot 60.
(93) Shown in FIGS. 35 and 36 depict a mode of the system herein which is a closed system. As shown, the cable herein defines an extension cord 62 adapted for connection to a first or wall socket 16 which is operatively engaged in the cavity 13 of a remotely positionable housing or junction box 12. This mode of the system herein is self contained and has a fluid conduit 26 communicating therethrough between a second socket 16 shown as plug receptacle 64 and an internally housed reservoir 66 of pressurized fire retardant within the housing. In this mode of the system, should the extension cord 62 overheat, the resulting communication of fire retardant to the overheating point on the extension cord 62 will extinguish any flame. While not shown, the apertures 32 can be formed in the flexible sheath of the cable forming the extension cord 62.
(94) A similar self contained mode of the system herein is shown in FIG. 37. As depicted a housing 68 is configured for positioning of larger electric components within the interior cavities 13 of the formed housing 68 which is defined by the surrounding sidewalls 15. Shown in a transparent rendition the sidewalls 15 form an internal cavity having a reservoir 66 of fire retardant therein. The reservoir 66 connects through the fluid conduit 26 to the extension cord 62 to a remote plug receptacle 64. This mode of the system would work well where the larger electronic component is for example used in a recreational vehicle or boat or other portable configuration, to guard against fire from resistive heating or sparking in wiring or overheating of the electronic component located proximate to the portable housing 68.
(95) As noted, any of the different configurations and components can be employed with any other configuration or component shown and described herein. Additionally, while the present invention has been described herein with reference to particular embodiments thereof and steps in the method of production, a latitude of modifications, various changes and substitutions are intended in the foregoing disclosures, it will be appreciated that in some instance some features, or configurations, or steps in formation of the invention could be employed without a corresponding use of other features without departing from the scope of the invention as set forth in the following claims. All such changes, alternations and modifications as would occur to those skilled in the art are considered to be within the scope of this invention as broadly defined in the appended claims.
(96) Further, the purpose of any abstract of this specification is to enable the U.S. Patent and Trademark Office, the public generally, and especially the scientists, engineers, and practitioners in the art who are not familiar with patent or legal terms or phraseology, to determine quickly from a cursory inspection the nature and essence of the technical disclosure of the application. Any such abstract is neither intended to define the invention of the application, which is measured by the claims, nor is it intended to be limiting, as to the scope of the invention in any way.
