MULTIPORT PISTON-SEAL FITTING

Abstract

The present invention includes a multiport fitting, including a multiport fitting body including a plurality of connection ports, wherein each connection port is operably configured to receive a connection mechanism of a fluid-fitting adapter, wherein the connection mechanism can be secured to the connection port by manipulation of at least a portion of the connection mechanism substantially along an axis that is substantially perpendicular to a surface of the multiport fitting body in which the connection port is located; includes a seal receptacle and a fastener receptacle, and is proximate to at least one other connection port of the plurality of connection ports.

Claims

1. A multiport fitting system, comprising: a multiport fitting body comprising a plurality of connection ports, wherein each connection port: is operably configured to receive a connection mechanism of a fluid-fitting adapter, wherein the connection mechanism can be secured to the connection port by manipulation of at least a portion of the connection mechanism substantially along an axis that is substantially perpendicular to a surface of the multiport fitting body in which the connection port is located; comprises a seal receptacle and a fastener receptacle; and is proximate to at least one other connection port of the plurality of connection ports.

2. The system of claim 1, wherein each seal receptacle is operably configured to receive a seal of the connection mechanism of the fluid-fitting adapter.

3. The system of claim 2, wherein the seal is a piston-style seal.

4. The system of claim 1, wherein each fastener receptacle is operably configured to receive a fastener.

5. The system of claim 4, wherein the fastener comprises a screw or a bolt.

6. The system of claim 1, wherein the multiport fitting is operably configured to carry fuel, air, water, coolant, lubricant, propellant, hydraulic fluid, an environmental control agent, a fire-suppression agent, or some combination thereof.

7. The system of claim 1, further comprising at least one multiport-fitting fluid carrier, each multiport-fitting fluid carrier in fluid communication with one connection port of the plurality of connection ports, each multiport-fitting fluid carrier operably configured to carry fluid to or from the connection port with which it is in fluid communication.

8. The system of claim 1, wherein at least one connection port of the plurality of connection ports is operably configured to carry fluid directly to or from a fuel system, an engine, a transmission, a cooling system, a lubrication system, a propellant system, a hydraulic system, an environmental control system, or a fire-suppression system, a vacuum-gyroscope system, a lifting-gas system.

9. The system of claim 1, wherein the multiport fitting body is operably configured to carry fluid directly to or from direct fluid communication to a fuel system, an engine, a transmission, a cooling system, a lubrication system, a propellant system, a hydraulic system, a vacuum-gyroscope system, an environmental control system, or a fire-suppression system.

10. A method of providing a plurality of connection ports, comprising: providing a multiport fitting, the multiport fitting comprising: a multiport fitting body comprising a plurality of connection ports, wherein each connection port: is operably configured to receive a connection mechanism of a fluid-fitting adapter; comprises a seal receptacle and a fastener receptacle; and is proximate to at least one other connection port of the plurality of connection ports; receiving at least one connection mechanism of a fluid-carrying component with one connection port; and securing the connection mechanism to the multiport fitting by manipulation of at least a portion of the connection mechanism substantially along an axis that is substantially perpendicular to a surface of the multiport fitting body in which the connection port is located.

11. The method of claim 10, further comprising sealing a connection by receiving a seal of the one connection mechanism with the seal receptacle.

12. The method of claim 11, wherein the seal a piston-style seal.

13. The method of claim 10, further comprising securing the connection mechanism to the multiport fitting by receiving a fastener.

14. The method of claim 13, wherein the fastener includes a screw or a bolt.

15. The method of claim 10, further comprising providing direct fluid communication between at least one connection port of the plurality of connection ports and a multiport-fitting fluid carrier.

16. The method of claim 15, wherein the multiport-fitting fluid carrier includes a hose, a tube, a fitting, or combinations thereof.

17. The method of claim 10, further comprising providing direct fluid communication between at least one connection port of the plurality of connection ports and a fuel system, an engine, a transmission, a cooling system, a lubrication system, a propellant system, a hydraulic system, an environmental control system, or a fire-suppression system.

18. The method of claim 10, further comprising providing direct fluid communication between the multiport fitting body and a fuel system, an engine, a transmission, a cooling system, a lubrication system, a propellant system, a hydraulic system, an environmental control system, a fire-suppression system, a vacuum-gyroscope system, or a lifting-gas system.

19. A rotorcraft, comprising: a fuselage; a multiport fitting coupled to the fuselage, comprising: a multiport fitting body comprising a plurality of connection ports, wherein each connection port: is operably configured to receive a connection mechanism of a fluid-fitting adapter, wherein the connection mechanism can be secured to the connection port by manipulation of at least a portion of the connection mechanism substantially along an axis that is substantially perpendicular to a surface of the multiport fitting body in which the connection port is located; comprises a seal receptacle and a fastener receptacle; and is proximate to at least one other connection port of the plurality of connection ports.

20. The rotorcraft of claim 19, wherein each seal receptacle is operably configured to receive a seal of the connection mechanism of the fluid-fitting adapter.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0014] For a more complete understanding of the features and advantages of the present invention, reference is now made to the detailed description of the invention along with the accompanying figures, in which:

[0015] FIG. 1 shows a side view of a helicopter according to a particular embodiment of the present application;

[0016] FIG. 2 shows a partial cross-section, perspective view of a helicopter according to an embodiment of the present application;

[0017] FIG. 3 shows a perspective view of a fluid-fitting adapter system according to a particular embodiment of the present invention;

[0018] FIG. 4 shows a perspective view of a multiport fitting according to a particular embodiment of the present invention;

[0019] FIG. 5 shows a perspective view of fluid-fitting adapter systems and a multiport fitting according to a particular embodiment of the present invention;

[0020] FIG. 6 shows a perspective view of a multiport fitting and fluid-fitting adapter systems according to a particular embodiment of the present invention; and

[0021] FIG. 7 shows a flowchart of a method of providing a plurality of connection ports that depicts an embodiment of the present invention.

DETAILED DESCRIPTION OF THE INVENTION

[0022] Illustrative embodiments of the system of the present application are described below. In the interest of clarity, not all features of an actual implementation are described in this specification. It will of course be appreciated that in the development of any such actual embodiment, numerous implementation-specific decisions must be made to achieve the developer's specific goals, such as compliance with system-related and business-related constraints, which will vary from one implementation to another. Moreover, it will be appreciated that such a development effort might be complex and time-consuming but would nevertheless be a routine undertaking for those of ordinary skill in the art having the benefit of this disclosure.

[0023] In the specification, reference may be made to the spatial relationships between various components and to the spatial orientation of various aspects of components as the devices are depicted in the attached drawings. However, as will be recognized by those skilled in the art after a complete reading of the present application, the devices, members, apparatuses, etc. described herein may be positioned in any desired orientation. Thus, the use of terms such as above, below, upper, lower, or other like terms to describe a spatial relationship between various components or to describe the spatial orientation of aspects of such components should be understood to describe a relative relationship between the components or a spatial orientation of aspects of such components, respectively, as the device described herein may be oriented in any desired direction.

[0024] The present invention is directed to a novel fluid fitting, e.g., for use with fuel lines, that avoids the need for a large open area adjacent the connections, which are currently required for operating wrenches during installation and removal of the fittings. The present invention overcomes these space limitation problems while still maintaining optimal operation and access to fluid lines. The present invention also expands the possible locations for fluid fittings that maximize design efficiency, while also reducing maintenance time. Furthermore, the fluid fitting of the present invention provides for one or more adaptors that connect two styles of fluid fittings while creating space so that multiple fittings can be installed in a small area. The present invention also includes a single adaptor that allows the installation of multiple tubes, hoses and/or fittings in a small area with limited and simple tools. In one example, a piston style seal allows for ease of installation. The design of the present invention overcomes the devices and methods used previously used large fittings incorporating a wrenching element that requires significant space for tools and a face seal that must be located while installing to ensure even compression of the seal.

[0025] FIG. 1 shows an aircraft 100 in accordance with a preferred embodiment of the present application. In the exemplary embodiment, aircraft 100 is a helicopter having a fuselage 102 and a rotor system 104 carried thereon. A plurality of rotor blades 106 is operably associated with a rotor system 104 for creating flight. A tail boom 108 is depicted that further includes tail rotor 110.

[0026] For example, FIG. 2 shows a partial cross-section perspective view of aircraft 100 that includes additional detail of the present invention. Aircraft 100 further includes a rotor mast 112, which is connected to the main rotor gearbox (MRGB) 114. The MRGB 114 is connected to one or more accessory gear boxes 116 and one or more reduction gearboxes (RGB) 216a, 216b, hydraulic pump(s) and generator(s). Each RGB 216a, 216b is connected to one or more engines 120a, 120b, which are within an engine compartment 118. A tail rotor drive shaft 122 transmits mechanical rotation to the tail rotor gearbox 124, which is connected via tail rotor drive shaft 126 and intermediate gear box 128.

[0027] The drive system and subcomponents of aircraft 100 were developed to address the failures common to rotorcraft drive systems and is based on a completely new design and application of new technology to rotorcraft safety. More particularly, the new rotorcraft drive system is focused in an unparalleled manner on safety and redundancy. The goal of safety drove the design and development of the unique layout and configuration of the rotorcraft drive system described herein, which incorporates unique features and system separation that protects primary aircraft systems from the most common drive system failures. The drive system has also been designed to maximize the operational capability in the event of an uncommon failure, such as a loss of lubrication.

[0028] The drive system and subcomponents of aircraft 100 overcome many drive system failures by including one or more of the following design features: (1) minimize the number of single path drive system components; (2) provide maximum system separation and redundancy; (3) minimize maintenance requirements and maintenance related incidents; (4) minimize the potential of loss of lubrication events; and/or (5) maximize main rotor gearbox loss of lubrication capability. The rotorcraft drive system includes, e.g., dual engine reduction gearboxes completely isolated from the remainder of drive system via freewheeling clutches in the main rotor gearbox, dual accessory gearboxes separate from the main rotor gearbox, and the distribution of the gearbox driven accessories among the separate systems, among other improvements.

[0029] FIG. 3 shows a perspective view of a fluid-fitting adapter 300 according to a particular embodiment of the present invention. Aircraft 100 and its engine 120, main rotor gearbox 114, and other systems require one or more fluids, such as fuel, air, water, coolant, lubricant, propellant, hydraulic fluid, environmental-control agents (e.g., a refrigerant), fire-suppression agents, lifting gases, some other fluid, or some combination thereof. Such fluids are transported within aircraft 100 via a variety of hoses, tubes, fittings, or some combination thereof. These fluid carriers that transport fluids within aircraft 100 may have a variety of differently configured connection mechanisms with systems such as engine 120, main rotor gearbox 114, other systems, or other fluid carriers, to couple the fluid carriers to other items, and some of these connection mechanisms occupy a relatively large space or require relatively large clearance spaces for installation, inspection, and maintenance. Fluid-fitting adapter 300 is used to connect a fluid carrier to a multiport fitting 400 (not shown) that has at least two relatively compact connection ports, each of which require relatively little space for installation, inspection, and maintenance, and which are proximate to each other. Fluid-fitting adapter may include a rigid material, a flexible material, or some combination thereof. Fluid-fitting adapter 300 includes an adapter body 302. The fluid-fitting adapter 300 also includes piston-style connection mechanism 304 at one end, and piston-style connection mechanism 304 includes a piston-style seal 306, a flange 308, and a fastener 310. The piston-style seal 306 is used to seal a connection between the fluid-fitting adapter 300 and the multiport fitting 400, placing the fluid-fitting adapter 300 in fluid communication with the multiport fitting 400 with substantially no leakage. The flange 308 is used to secure the fluid-fitting adapter 300 to the multiport fitting 400 with fastener 310, e.g., a screw or a bolt. At the other end of the fluid-fitting adapter 300, there is another type of connection mechanism that is differently configured than piston-style connection mechanism 304, e.g., a non-piston-style connection mechanism or a piston-style connection mechanism with a piston-style seal that is of a different size or configuration than piston-style connection mechanism 304. A flared end fitting is shown, but the connection mechanism at the other end of the fluid-fitting adapter 300 may be, e.g., a flareless fluid end fitting, a flange seal interface, an open tube, an open tube with a beaded end for a hose clamp, a specially designed fitting or coupling, or some other type of connection mechanism. The skilled artisan will recognize that, while fluid-fitting adapter 300 is shown with a connection mechanism at each of two ends, that in an alternate embodiment of the present invention, a fluid-fitting adapter may have two or more ends, such as a T-shaped adapter, each with a connection mechanism. Fluid-fitting adapter 300 not only permits two or more couplings in a relatively small space; it also permits such couplings to fluid carriers with connection mechanisms with differently configured connection mechanisms.

[0030] FIG. 4 shows a perspective view of multiport fitting 400 according to a particular embodiment of the present invention. Multiport fitting 400 is capable of carrying fluid such as those fluids mentioned herein. Multiport fitting 400 includes a multiport fitting body 401, one or more connection ports 402 in multiport fitting body 401, each of which includes a seal receptacle 404 and a fastener receptacle 406. When piston-style seal 306 (not shown) is inserted into seal receptacle 404, fluid-fitting adapter 300 (not shown) can be secured to multiport fitting 400 by inserting fastener 310 (not shown) through flange 308 (not shown) into fastener receptacle 406.

[0031] FIG. 5 shows a perspective view of multiport fitting 400 and a plurality of fluid-fitting adapters 300 and according to a particular embodiment of the present invention. Several fluid-fitting adapters 300 are shown with their respective piston-style seals 306 inserted into seal receptacles 404 (not shown because obscured by piston-style connection mechanisms 304). A seal receptacle 404 without a piston-style seal 306 inserted is shown. For one of the illustrated piston-style seals 306 inserted into a seal receptacle 404, the head 310a of a fastener 310 is shown. A fastener receptacle 406, into which a fastener 310 is not inserted, is shown for clarity.

[0032] FIG. 6 shows a perspective view of a multiport fitting and a plurality of fluid-fitting adapters according to a particular embodiment of the present invention. Some components of multiport fitting are omitted for clarity. Multiport fitting 400 is shown transparent to offer a view of a plurality of multiport-fitting fluid carriers 408. Each multiport-fitting fluid carrier 408 is in fluid communication with one of the connection ports 402 and is operably configured to carry fluid away to or from the connection port 402 with which it is in fluid communication. Multiport fitting body 401 may also be in direct fluid communication with an aircraft system to or from which it communicates fluids, such as a fuel system, an engine 120, a gearbox such as main rotor gearbox 114, a cooling system, a lubrication system, a propellant system, a hydraulic system, an environmental control system, a fire-suppression system, a vacuum-gyroscope system (including, e.g., vacuum-driven gyroscopic instruments such as an attitude indicator or a gyroscopic compass), a lifting-gas system (in, e.g., aeronautical balloons), or some other system, and multiport fitting body 401 may be operably configured to carry fluid directly to or from the aircraft system with which it is in direct fluid communication.

[0033] Referring now to FIG. 7, a flowchart of a method 700 of providing a plurality of connection ports illustrates an embodiment of the present invention. The method 700 includes step 702, providing a multiport fitting, the multiport fitting including a multiport fitting body including a plurality of connection ports, wherein each connection port is operably configured to receive a connection mechanism of a fluid-fitting adapter; includes a seal receptacle and a fastener receptacle; and is proximate to at least one other connection port of the plurality of connection ports. The method 700 includes step 704, receiving at least one connection mechanism of a fluid-carrying component with one connection port. The method 700 also includes step 706, securing the connection mechanism to the multiport fitting by manipulation of at least a portion of the connection mechanism substantially along an axis that is substantially perpendicular to a surface of the multiport fitting body in which the connection port is located.

[0034] The skilled artisan will recognize that the novel fluid-fitting adapter system and method of adapting a fluid connection of the present invention will permit the placement of more fluid-fitting adapters 300 and a multiport fitting 400 into a given space and will permit easier access to the connections of the fluid-fitting adapters, lowering operation and maintenance costs. The skilled artisan will also recognize that the novel system and method of providing a plurality of connection ports of the present invention may be used in a wide variety of aeronautical and aerospace vehicles such as rotorcraft, airplanes, aeronautical balloons, rockets, missiles, and spacecraft, as well as a wide variety of other applications that use fluids.

[0035] It will be understood that particular embodiments described herein are shown by way of illustration and not as limitations of the invention. The principal features of this invention can be employed in various embodiments without departing from the scope of the invention. Those skilled in the art will recognize, or be able to ascertain using no more than routine experimentation, numerous equivalents to the specific procedures described herein. Such equivalents are considered to be within the scope of this invention and are covered by the claims.

[0036] All publications and patent applications mentioned in the specification are indicative of the level of skill of those skilled in the art to which this invention pertains. All publications and patent applications are herein incorporated by reference to the same extent as if each individual publication or patent application was specifically and individually indicated to be incorporated by reference.

[0037] The use of the word a or an when used in conjunction with the term comprising in the claims and/or the specification may mean one, but it is also consistent with the meaning of one or more, at least one, and one or more than one. The use of the term or in the claims is used to mean and/or unless explicitly indicated to refer to alternatives only or the alternatives are mutually exclusive, although the disclosure supports a definition that refers to only alternatives and and/or. Throughout this application, the term about is used to indicate that a value includes the inherent variation of error for the device, the method being employed to determine the value, or the variation that exists among the study subjects.

[0038] As used in this specification and claim(s), the words comprising (and any form of comprising, such as comprise and comprises), having (and any form of having, such as have and has), including (and any form of including, such as includes and include) or containing (and any form of containing, such as contains and contain) are inclusive or open-ended and do not exclude additional, unrecited elements or method steps. In embodiments of any of the compositions and methods provided herein, comprising may be replaced with consisting essentially of or consisting of. As used herein, the phrase consisting essentially of requires the specified integer(s) or steps as well as those that do not materially affect the character or function of the claimed invention. As used herein, the term consisting is used to indicate the presence of the recited integer (e.g., a feature, an element, a characteristic, a property, a method/process step, or a limitation) or group of integers (e.g., feature(s), element(s), characteristic(s), property(ies), method/process(s) steps, or limitation(s)) only.

[0039] The term or combinations thereof as used herein refers to all permutations and combinations of the listed items preceding the term. For example, A, B, C, or combinations thereof is intended to include at least one of: A, B, C, AB, AC, BC, or ABC, and if order is important in a particular context, also BA, CA, CB, CBA, BCA, ACB, BAC, or CAB. Continuing with this example, expressly included are combinations that contain repeats of one or more item or term, such as BB, AAA, AB, BBC, AAABCCCC, CBBAAA, CABABB, and so forth. The skilled artisan will understand that typically there is no limit on the number of items or terms in any combination, unless otherwise apparent from the context.

[0040] As used herein, words of approximation such as, without limitation, about, substantial or substantially refers to a condition that when so modified is understood to not necessarily be absolute or perfect but would be considered close enough to those of ordinary skill in the art to warrant designating the condition as being present. The extent to which the description may vary will depend on how great a change can be instituted and still have one of ordinary skill in the art recognize the modified feature as still having the required characteristics and capabilities of the unmodified feature. In general, but subject to the preceding discussion, a numerical value herein that is modified by a word of approximation such as about may vary from the stated value by at least 1, 2, 3, 4, 5, 6, 7, 10, 12 or 15%.

[0041] All of the devices and/or methods disclosed and claimed herein can be made and executed without undue experimentation in light of the present disclosure. While the devices and/or methods of this invention have been described in terms of particular embodiments, it will be apparent to those of skill in the art that variations may be applied to the compositions and/or methods and in the steps or in the sequence of steps of the method described herein without departing from the concept, spirit and scope of the invention. All such similar substitutes and modifications apparent to those skilled in the art are deemed to be within the spirit, scope, and concept of the invention as defined by the appended claims.

[0042] Furthermore, no limitations are intended to the details of construction or design herein shown, other than as described in the claims below. It is therefore evident that the particular embodiments disclosed above may be altered or modified and all such variations are considered within the scope and spirit of the disclosure. Accordingly, the protection sought herein is as set forth in the claims below.

[0043] Modifications, additions, or omissions may be made to the systems and apparatuses described herein without departing from the scope of the invention. The components of the systems and apparatuses may be integrated or separated. Moreover, the operations of the systems and apparatuses may be performed by more, fewer, or other components. The methods may include more, fewer, or other steps. Additionally, steps may be performed in any suitable order.

[0044] To aid the Patent Office, and any readers of any patent issued on this application in interpreting the claims appended hereto, applicants wish to note that they do not intend any of the appended claims to invoke 35 U.S.C. 112(f) as it exists on the date of filing hereof unless the words means for or step for are explicitly used in the particular claim.