Tool attachment system

Abstract

An attachment device (10) adapted for use with at least two retainers (14), the device (10) including at least two mountings (44), each for engagement with a retainer (14), wherein when a first one (14a) of the retainers is engaged with the device (10) it cannot be detached from the device until another retainer (14b) has been engaged with the device (10).

Claims

1. A retention system comprising a rotatable dock and an attachment device adapted to be connected to the rotatable dock, the dock comprising: a retainer member comprising a retention portion adapted to be trapped by the retention system, and a mounting member adapted to be mounted on an object; the retainer member mounted on the mounting member for rotation about an axis, and a detent mechanism that resists relative rotation of the mounting and retaining members and the attachment device including: a first elongate slot having an open first end, the first slot adapted to receive a retention portion of the first dock via the open first end; a second elongate slot having an open second end, the second slot adapted to receive a retention portion of a second retainer via the open second end; a first latch portion and a second latch portion; a first release portion having a first engagement surface, and a second release portion having a second engagement surface, wherein the first latch portion and the second release portion are connected together for rotation about a first axis; the second latch portion and the first release portion are connected together for rotation about a second axis; the first latch portion and second release portion are connected to the second latch portion and first release portion; the first latch portion is rotatable about the first axis between a first retaining position and a first open position and, in the first retaining position the second engagement surface is located in the second slot at a second release position remote from the second end, and at least part of the first latch portion extends into or across the first slot to substantially block the slot, and in the open position the first slot is not blocked by the first latch portion; the second latch portion is rotatable about the second axis between a second retaining position and a second open position, and in the second retaining position, the first engagement surface is located in the first slot at a first release position remote from the first end, and at least part of the second latch portion extends into or across the second slot to substantially block the slot, and in the open position the slot is not blocked by the second latch portion, and when in the first retaining position the first latch portion is located between the first end and the first release position, and when in the second retaining position the second latch portion is located between the second end and the second release position, and movement of the first engagement surface away from the first release position and away from the first open end causes the second latch portion to move from the second retaining position toward the second open position and causes or urges movement of the first latch portion toward the first retaining position; movement of the second engagement surface away from the second release position and away from the second open end causes the first latch portion to move from the first retaining position toward the first open position and causes or urges movement of the second latch portion toward the second retaining position; and when one of the first and second latch portions is between the respective open and retaining positions, the other of the first and second latch portions extends into the respective first or second slot.

2. The retention system of claim 1 wherein one of the mounting and retaining members comprises a mating portion having a first surface and a second surface, the other of the mounting and retaining members having at least one first portion that engages the first surface and at least one second portion that engages the second surface.

3. The retention system of claim 2 wherein said mating portion comprises at least one annular ring portion centered on the axis.

4. The retention system of claim 3 wherein said mating portion comprises an opening and the other of the mounting and retaining member extends through the opening.

5. The retention system of claim 3 including at least one securing portion that engages one or both of the first and second surfaces, the securing portion and/or the mating portion being deflectable to allow the at least one securing portion to pass through the opening.

6. The retention system of claim 5 wherein the at least one securing portion comprises two diametrically opposed securing portions.

7. The retention system of claim 5 wherein the at least one securing portion comprises two spaced apart wall portions or are attached to two spaced apart wall portions.

8. The retention system of claim 7 wherein the two spaced apart wall portions are deflectable to allow the at least one securing portion to pass through the opening.

9. The retention system of claim 8 wherein the two spaced apart wall portions are angled toward each other.

10. The retention system of claim 8 including a cross member that extends between the two spaced apart wall portions to limit or prevent deflection.

11. The retention system of claim 1 wherein: the mounting member comprising a mating member having an opening, a first annular surface on one side of the opening and a second annular surface on the other side of the opening, and the retainer member comprises two spaced apart wall portions, each wall portions engaging the first annular surface and having a securing member that extends through the opening and extends over and engages the second annular surface; the detent formed by at least one first detent member on at least one securing member that engages at least one second detent member on the second annular surface.

12. The retention system of claim 10 wherein each spaced apart wall portion has first and second ends that engage one of the first and second surfaces and at least one securing portion extends transversely from each spaced apart wall portion intermediate the first and second ends that engages the other of the first and second surfaces.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIG. 1 is a schematic perspective view of an attachment system according to an embodiment of the invention.

(2) FIG. 2 is a perspective view of the components of FIG. 1 with a mounting engaged with a first retainer.

(3) FIG. 3 is a sectioned view of the components of FIG. 1 with a mounting engaged with a first retainer.

(4) FIG. 4 is a sectioned view of the components of FIG. 1 with a mounting engaged with a first retainer and with a second retainer entering the mounting.

(5) FIG. 5 is a sectioned view of the components of FIG. 1 at an intermediate state with the mounting engaged the first and second retainers.

(6) FIG. 6 is a sectioned view of the components of FIG. 1 with the mounting fully engaged the second retainer and the first retainer being removed from the mounting.

(7) FIG. 7 is a perspective view of the system with retainers mounted on arms of a user and in the state of FIG. 5.

(8) FIG. 8 is a perspective view of the system with a retainer mounted on a waist belt of a user.

(9) FIG. 9 is a side view of a tool mounting according to a second implementation of the invention.

(10) FIG. 10 is a sectioned side view of the tool mounting of FIG. 9.

(11) FIG. 11 is a sectioned perspective view of the tool mounting of FIG. 9.

(12) FIG. 12 is a perspective view of a tool mounting according to a third implementation of the invention.

(13) FIG. 13 is a sectioned side view of the tool mounting of FIG. 12.

(14) FIG. 14 is a sectioned perspective view of the tool mounting of FIG. 12.

(15) FIG. 15 is a side view of a tool mounting according to a fourth implementation of the invention.

(16) FIG. 16 is a perspective view of an attachment system according to a fifth implementation of the invention.

(17) FIG. 17 is a plan view of the system of FIG. 16.

(18) FIG. 18 is a side view of the system of FIG. 16.

(19) FIG. 19 is a sectioned end view of the system of FIG. 16.

(20) FIG. 20 is a side view of an attachment system according to a sixth implementation of the invention with a part of a housing not shown.

(21) FIG. 21 is a sectioned side view of an attachment system according to a sixth implementation of the invention.

(22) FIG. 22 is a plan view from above of a rotating retainer or dock according to the invention.

(23) FIG. 23 is a side view of the rotating dock of FIG. 22.

(24) FIG. 24 is a rear end view of the rotating dock of FIG. 22.

(25) FIG. 25 is a plan view from below of the rotating dock of FIG. 22.

(26) FIG. 26 is a plan view from above of the rotating dock of FIG. 22 partially assembled.

(27) FIG. 27 is a rear end view of the rotating dock of FIG. 22 partially assembled.

(28) FIG. 28 is a front end view of the rotating dock of FIG. 22 partially assembled.

(29) FIG. 29 is a side view of the rotating dock of FIG. 22.

(30) FIG. 30 is a plan view from above of another rotating retainer or dock according to the invention.

(31) FIG. 30a is a plan view of the rotating dock of FIG. 30 in another orientation.

(32) FIG. 30b is a right side view of the rotating dock of FIG. 30a.

(33) FIG. 31 is a left side view of the rotating dock of FIG. 30.

(34) FIG. 32 is a right side view of the rotating dock of FIG. 30.

(35) FIG. 33 is a plan view from below of the rotating dock of FIG. 30.

(36) FIG. 34 is an exploded perspective view from above of the rotating dock of FIG. 30.

(37) FIG. 35 is a plan view from above of a further rotating retainer or dock according to the invention.

(38) FIG. 36 is a left side view of the rotating dock of FIG. 35.

(39) FIG. 37 is a plan view from below of the rotating dock of FIG. 35.

(40) FIG. 38 is a perspective view from above of the rotating dock of FIG. 35.

(41) FIG. 39 is an exploded perspective view from above of the rotating dock of FIG. 35.

(42) FIG. 40 is a front end view of the rotating dock of FIG. 35.

(43) FIG. 41 is a cross sectional view of the rotating dock of FIG. 35 taken along line AA in FIG. 36.

(44) FIG. 42 is a plan view from above of a further rotating retainer or dock according to the invention.

(45) FIG. 43 is a side view of the rotating dock of FIG. 44.

(46) FIG. 44 is a front side view of the rotating dock of FIG. 44.

(47) FIG. 45 is a plan view from below of the rotating dock of FIG. 35.

(48) FIG. 46 is a plan view from above of the rotating dock of FIG. 22 partially assembled.

(49) FIG. 47 is an exploded perspective view from above of the rotating dock of FIG. 35.

DETAILED DESCRIPTION OF PREFERRED AND OTHER EMBODIMENTS

(50) Referring to FIGS. 1 to 7 there is shown a safety tool attachment system 10 according to one implementation of the invention. The system includes a tool mounting 12 and two retainers 14a, 14b.

(51) The tool mounting 12 may be attached directly to a tool 15 or may be attached via tether 16.

(52) The retainers 14 are mounted to a suitable object. In FIG. 1 the retainers 14 are mounted on wrist straps 18 which in turn are mounted on the arms 20 of a user. The retainers 14 have slots 31 through which a strap may pass, such as strap 33 of wrist straps. The slots 31 are also shaped so that a screw, bolt, rivet or similar fastener may pass through at either end into a solid object, such as a post or other suitable structure.

(53) The retainers 14a, 14b are identical to each other each and have two spaced apart side plates 22 joined by rib 24. Openings 26 and 28 are thus located either side of rib 24. Additional rib 32 serves to space and join two side plates 22 together and delineate the opening 28. The rib 24 is generally elongate and linear. The rib 24 may also be circular in cross-section.

(54) The tool mounting 12 includes a housing 34 with a latch 36 pivotably mounted on axle 38. The housing 12 may be formed of two side plates 40a and 40b joined together. A screw 42 may serve to hold the two plates 40a and 40b together and function as the axle 38. The housing 12 defines two elongate slots 44 extending either side of axle 38.

(55) The latch 36 is elongate and symmetrical about its longitudinal axis and includes an arrow shaped head 46 at one end and a tail 48 at the other end, with axle 38 located in between. Tail 42 has two faces 50 and 54 angled to each other and the longitudinal axis. The housing 12 includes leaf spring 52 that engages one or other of the faces 50 and 54 and serves to bias the latch 36 to be pivoted to one or the other sides of the axis of the housing. The angled nature of the faces 50 and 52 provides an over centre action that causes the Latch 36 to flip from one side to the other when rotated and serves to bias the latch 36 to whichever current position it holds. Other over centre action mechanisms may be used.

(56) The slots 44 are sized to receive rib 24 of a retainer 14.

(57) The arms 47a and 47b of the arrow shaped head 46 act as first and second latch portions, respectively. As seen in FIGS. 3 and 4 the latch 36 is oriented with head 46, and more particularly the arm 47a (first latch portion), extending over slot 44a and traps rib 24a between the arm 47a and the blind end of the slot 44a. Because rib 24a is connected to side plates it cannot be removed sideways from the slot. The rib is trapped in the slot 44a and so the tool mounting 12 is secured to the retainer 14a whilst the head, and more particularly the arm 47a (first latch portion), overlays the slot 44a. The latch 36 is maintained in this position by the spring 52.

(58) The tail 48 can be considered to comprise first release portion 49a with a first angled engagement surface 56a and a second release portion 49b with a second angled engagement surface 56b. first angled engagement surface 56a extends into the slot 44a. Relative movement of the rib 24a along the slot 44a toward the tail will cause the latch 36 to rotate so as to cause more of head 46 to extend over the open end of slot 44a. Movement of rib 24a toward the open end of slot will cause the rib 24a to engage angled face 58a of arm 47a (first latch portion) and also cause more of head 46 to extend over the open end of slot 44a. Thus movement in either direction along slot 44 increases retention of the rib in the slot.

(59) Slot 44b is open and the mounting 12 may be moved relative to retainer 14b so that rib 24b enters slot 44b. The head 46, and more particularly the arm 47b (second latch portion), does not impede the rib 24b. However, preferably the front faces 60 of the head are angled so that if they did extend into the slot entry of a rib will push them sideways and allow entry of the rib. The rib 24b moves into the slot and engages second engagement surface 56b of tail. The second engagement surface 56b is angled such that continued movement of the rib 24b toward the base of the slot 44b causes the latch 36 to rotate against the biasing force of the spring. Rotation continues until the tail 48 passes over the centre point and flips to the other orientation, with the head 46, and more particularly the arm 47b (second latch portion), extending over slot 44b. The length of the rib relative to the spacing of the head and tail is such that the rib 24b is located past the head and does not impede the rotation of the latch.

(60) Referring to FIG. 5, at the centre position, the head 46, and more particularly both of the arms 47a and 47b (first and second latch portions), extends over both slots 44a and 44b and the tool mounting 12 is secured to both tool retainers 14a and 14b.

(61) When the latch flips so that head covers slot 44b and traps rib 18b, the arm 47a (first latch portion) uncovers slot 44a and so rib 24a may be moved out of the slot 44a and engagement with the housing, as seen in FIG. 5. The tool holder 12 is now secured to retainer 14b and not to retainer 14a.

(62) Thus the tool holder 12 remains attached to at least one retainer at all times. As such, so long as the retainers are suitably retained a tool attached to the tool holder cannot be dropped.

(63) FIG. 7 schematically shows an arrangement corresponding to FIG. 5 in which both retainers 14a, 14b are secured to the tool holder.

(64) FIG. 8 schematically shows an arrangement in which a retainer 14a is mounted on a wrist strap 18 and another retainer 14b is secured to a belt 70 on a user's torso. A tool holder 12 may be transferred from the user's arm 20 to the belt 70 as described above. The belt 70 may be provided with multiple retainers 14 with a tool secured to each retainer. Since each tool holder 12 must be engaged with another retainer before it can be disengaged from the waist belt 70, it is not possible to have one or more loose unsecured tools. The user may have more than one retainer on each arm and may have retainers on both arms. Thus if a user needs to work with a tool held in their left hand, the tool holder 12 may be secured to a retainer on the left arm. If use with the right arm is desired the tool holder 12 can be transferred from the left arm retainer to the right arm retainer using the process described above.

(65) A work platform or similar may be provided with one or more tool retainers 14 such that tools may be securely attached to the work platform when not being used. When the user requires a tool the tool holder 12 is transferred from the retainer on the work platform to a retainer secured to the user.

(66) Whilst the drawings show the user's retainers mounted directly on wrist or waist belts, this is not essential. It is merely necessary that the retainer be secured to the user. As an example one or more retainers may be attached to a user or work platform by rope or cable or other tethers. However, using wrist and waist belts provides a relatively rigid mounting and aids in engaging a free retainer with the captive holder.

(67) FIGS. 9 to 11 show a tool mounting 112 similar to the tool mounting 12 of FIGS. 1 to 8. The tool mounting 112 operates substantially identically to tool mounting 12 and has latch 136 pivoting about axle 138 to alternatively cover the end of slots 144a and 144b. The axle 138 may be formed as part of one of the housing parts 134a, 134b and the latch 136 may be a press fit onto the axle. The latch 136 is biased to be over one of the slots 144a and 144b by spring member 152. The spring member 152 is preferably formed of a resilient plastics and integrally formed with housing part 134 but may be a separate component, whether metal, plastics or otherwise. One or both of the housing parts 134a, 134b are provided with a slot 160 that exposes part of the tail 148 of the latch 136. As best seen in FIG. 9, the slot extends either side of the tail. This slot provides the ability to manually release the mounting 112 from a retainer (not shown) held in one of the slots 144a and 144b. To do so the user may insert an implement, such as a screwdriver, into the slot 160 and engage the tail 148 to rotate the latch against the biasing force of spring so that the head moves from covering the end of one slot to covering the end of the other slot.

(68) FIGS. 12 to 14 show a tool mounting 212 similar to the tool mountings 12 and 112. The tool mounting 212 operates substantially identically to tool mountings 12 and 112 and has latch 236 pivoting about axle 238 to alternatively cover the end of slots 244a and 244h. The axle 238 may be formed as part of one of the housing parts 234a and 234b and the latch 236 may be a press fit onto the axle. Alternatively the axle may be a pin 239 that is heat staked or otherwise secured to one of the housing parts 234a and 234b. The pin 239 may have a head 240 to retain the latch 236 on the pin. The latch 236 is biased to be over one of the slots 244a and 244h by spring member 252. The spring member 252 is a separate component but may be formed integrally formed with housing part 234a.

(69) The housing parts 234a, 234b are provided with an arc shaped slot 260 that exposes part of the tail 248 of the latch 236. The slot 260 is centred on the axle 238. The end of the tail 248 has manual release tabs 270 that extend into each slot 260. In either locked position the release tabs 270 are located toward an end of the slot 260. The housing need not have two slots 260 and may be made with only one slot 260.

(70) The release tabs 270 extend out of the slots 260 and a user may engage one or both of the tabs 270 and rotate the latch against the biasing force of spring so that the head moves from covering the end of one slot to covering the end of the other slot. If desired the tabs may end flush with the housing parts 234a and 234b, so as to reduce the possibility of being caught on another object and accidentally releasing. If desired the tabs 270 may be recessed from the outer surface of the housing parts 234a and 234b. If desired, the slot may be sized so tabs 270 are not at the end of the slots when the latch is fully rotated. Thus a space may be provided between the end of the slot and the tab to aid engagement by a user's fingers.

(71) FIG. 15 shows a mounting 312 that is substantially the same as mounting 12 but the housing 334 is provided with a centrally located locking aperture 314 adjacent tail 348 of latch 336. The locking aperture 314 is positioned so that as the latch 336 moves from one locking position to the other at least part of the tail passes through the locking aperture. Preferably the locking aperture is fully closed by the tail but partial closure can be sufficient. When the latch 336 is in either locking position the tail 348 lies to one side of central hole 314. The shackle of a padlock or similar may be passed through hole 314 to lock latch in one position.

(72) FIGS. 16 to 19 show a tool attachment system 410 that is similar to that of system 10 and the operation of the system is substantially as previously described.

(73) The main difference is that each of slots 444a and 444h in the housing 412 do not extend on both sides of latch member 436 but are only provided in one side of the housing 412. In the version shown the slots 444a and 444h are one either side of the housing and the housing is substantially symmetrical. However the slots 444a and 444h may be provided on the same side with the other side of the housing 412 a blank face.

(74) Since the slots 444a and 444h do not extend fully through the housing 412, the retainers 414 cannot have a rib that extends fully between side plates 422.

(75) Instead rib 424 extends from one side plate 422 part way toward the other, leaving a gap 425 that receives the housing 412, as best seen in FIG. 19. This provides the ability for the mounting 412 to only be picked up by a left or right sided retainers. This also has more security as the latch cannot be tripped by accidentally inserting a flat bar, rope or wire into the open slotto remove it the retainer must key into the slot. This version also provides for a user to manually release the retainer from the mounting by sliding the end of a rod or screwdriver along the open slot.

(76) FIGS. 20 to 21 show a tool attachment system 510. The system utilises retainers 514 substantially the same as retainers 14 and a twin slot mounting 512 similar to the previously described mounting. However, the latch mechanism is not a single member but includes two latch members 534a, 534b mounted for rotation about common axle 538, one above the other. The two latch members 534a, 534b are substantially mirror images of each other. Latch member 534a has head 546a and tails 548b, whilst latch member 534b has head 546b and tail 548a. Each head 546a and 546b has angled surfaces 558a, 558b and 560a, 560b, respectively whilst each tail 548a and 548b has angled surfaces 556a, 556b, respectively. The head 546a of latch member 534a thus comprises a first latch portion and the tail 548b a second release portion with angled surface 556b comprising a second engagement surface. Similarly, the head 546b of latch member 534b comprises a second latch portion and the tail 548a a first release portion with angled surface 556a comprising a first engagement surface. A rib 524 of a retainer 514 is trapped in slot 544a by the head 546a in a similar manner to the other embodiments.

(77) A torsion spring 552 is connected to the two latch members 534 at their tails. The spring 552 is biased to separate the two tails and this causes the heads to the biased outwards.

(78) In use, when a second retainer 514b is inserted into slot 544b, the rib 524b engages head 546b and urges it inwards toward the centreline of the device. This causes the tail to move inwards and, via spring 552, urge the head 564a of the other latch member outwards, maintaining the retaining function of that retaining member. Once the rib 524b has passed the head 564b, the head 564b springs outwards to prevent removal of the rib 542b from slot 546b. Continues motion causes the rib 524b to engage on engagement surface 556a of latch member 534a and causes anticlockwise rotation, drawing head 546a inwards and clearing the opening of slot 544a and allowing retainer 514a to be removed from the mounting 512.

(79) Referring to FIGS. 22 to 29 there is shown another retainer or dock 1010 for use with the attachment device as previously described.

(80) The dock 1010 comprises a mounting member 1012 and a retainer 1014 mounted on the mounting member 1012 for rotation about an axis.

(81) The mounting member 1012 has a base 1016 with a number of mounting apertures 1018 therein. In this embodiment the base 1016 is generally rectangular shaped and there are four apertures 1018, one at each corner. The apertures 1018 are to enable a fastener, such as a rivet, to secure the dock 1010 to another object, such as a structure. The shape of the base 1016 and number of apertures 1018 is not critical.

(82) The base 1016 has a mating portion that mates or engages with the retainer.

(83) The mating portion includes or has circular aperture 1020 therein, upper annular surface 1024 surrounding the aperture 1020 and lower annular surface 1030 surrounding the aperture 1020. The annular surface 1024 is generally smooth and lies in a plane. Two spaced apart slots 1026 extend into the annular surface 1024. The slots extend though the mating portion from the upper surface 1024 to the lower surface 1030. The annular surface 1030 has a series of recesses 1032 that are arranged circumferentially around the aperture 1020.

(84) The retainer 1014 has spaced apart side walls 1040 joined by cross walls 1042 and 1044. The retainer 1014 is functionally the same as retainer 14 shown in FIGS. 1 to 4 with cross wall 1044 being functionally equivalent to wall 24 and cross wall 1042 functionally equivalent to wall 32.

(85) Extending from each side wall 1040 is guide portion 1046. The guide portions 1046 have a part circular edge 1048 that has a radius the same or a slightly smaller than the radius of the aperture 1020 so the retainer may fit snuggly in the aperture 1020 and allows the retainer 1012 to rotate relative to the mounting member 1012. Each guide portion 1046 has a lower securing portion 1050 that extends beyond the edge of the aperture and, as seen in FIG. 25 extends under annular surface 1030. Each securing portion 1050 has at least one and preferably more than one, protrusion 1052 that is sized and located to engage in recesses 1032 in annular surface 1030. The protrusions 1052 and 1032 thus form a detent mechanism that controls the relative rotation of the two components. Accordingly the securing portions 1050 also act as detent portions.

(86) The annular surface 1030 is preferably recessed relative to the base surface 1028 of mounting member 1012 and so a short cylindrical wall 1056 extends from the base surface 1028 to the annular surface 1030. The thickness of the securing portion 1050 is such that their lower surface 1058 is recessed relative to the base surface 1028, but they may be flush. Preferably the securing portions 1050 have a part circular edge 1060 that has a radius the same or a slightly smaller than the radius of the wall 1056. The circular edges 1048 and 1060 thus serve to centre the retainer within the aperture 1020.

(87) The retainer has end portions 1062 and 1064 that extends over the upper annular surface 1024. These end portions 1062 and 1064 act as upper securing portions and act to secure the two components together, with the base plate 1016 sandwiched between these upper and lower securing portions 1062, 1064 and 1050 respectively. The spacing between end portions 1062 and 1064 and the securing portions 1050 is chosen to hold the securing portions 1050 relatively firmly against the lower annular surface 1030 with protrusions 1052 in recesses 1032. The retainer 1014 may be rotated relative to the mounting member 1012, with the securing portions 1050 flexing slightly to allow protrusions 1052 to ride out of recesses 1032.

(88) The slots 1026 allow the retainer and mounting to be assembled but remain connected during use. As seen in FIGS. 26 to 29, to assemble the dock 1010 the retainer 1014 is placed below the lower surface 1028 of the mounting member and aligned so that side walls 1040 are generally aligned with the slots 1026. End portion 1064 is inserted through the aperture 1030 at an angle until it overlies a part of upper annular surface 1024, with the forward parts of guide members 1046 against the forward end of the aperture 1030. The retainer 1014 is then pivoted upwards about that forward location, as indicated by arrow 1066. The side walls 1040 extend beyond the edge of the aperture 1030 and so can only pass from below to above the mounting member 1012 by their ends 1068 passing through slots 1026. The ends 1068 of the side walls 1040 are angled with the lower edges 1070 having a greater separation than upper portions 1072. The ends 1068 are also shaped to allow the upper portions 1072 to fit within the aperture 1030 as the retainer is rotated. As the retainer is rotated the ends 1068 engage in the slots 1026 and cause the two ends 1068 to move toward each other as the retainer is rotated upwards. Once the lower edges 1070 pass through the slots 1026, the walls 1040 spring outwards so as to overly the annular surface. Once assembled the lower edges 1070 have a greater separation than the slots 1026, as seen in FIG. 25 and so when one side wall is aligned with one of the slots the other side wall is not aligned with the other slot. Thus the dock 1014 cannot easily become disengaged from the mounting member. However, if disassembly is required, compressing the side walls 1046 together allows the slots 1026 and lower edges 1070 to be aligned and the dock may be rotated downwards.

(89) Once assembled the mounting member may be secured to a suitable object and the retainer rotated relative to the mounting member and the object to which it is secured.

(90) FIGS. 30 to 34 show a further variation of a rotatable retainer assembly 1110

(91) The assembly 1110 comprises a base plate 1112 and a retainer 1114. The retainer has guide members 1116 with downwardly extending arcuate walls 1118 that define a cylindrical recess 1120. The base plate 1112 has a disk like mating portion 1122 sized to fit in the recess 1120, whereby the retainer 1114 may rotate relative to the base plate 1112.

(92) The arcuate walls 1118 each include a downward extending tab 1124 that includes securing portion 1126 that, when assembled, extends inwardly underneath the lower surface 1128 of disk like mating portion 1120. The lower surface 1128 includes two arcuate portions 1130 that have a series of recesses 1132. The upper surface of the securing portions 1126 have at least one protrusion 1134 that engages in one or more of the recess 1130 so as to hold the retainer and mounting member is a fixed position until rotated by a user.

(93) The disk like mating portion 1122 includes two cut outs or slots 1136 that allow the retainer and mounting member to be assembled, by pushing the two components together with the securing portions 1126 aligned with the slots 1136. When assembled the securing portions 1126 extend radially inwards more than the slots 1136 even when aligned with the slots 1136. This requires the tabs 1124 to flex outwards during assembly to allow the securing portions 1126 clear the disk like mating portion 1120 with the tabs 1124 snapping inwards when the securing portions 1126 have cleared the disk portion 1120.

(94) In the embodiment shown the mounting member includes three mounting locations 1140, each with an aperture 1142 to allow a fastener, such as a rivet, to pass through and secure the mounting member to an object.

(95) As best seen in FIGS. 30 and 31 these mounting locations 1140 extend from the disc like mating portion 1122 but extend into the swept volume of the securing portions 1126 and tabs 1124, so preventing full rotation of the retainer 1114 relative to the mounting block 1112. If desired, the mounting locations 1140 may connect to the circular disc so as not to extend into the swept volume of the extensions 1126 and tabs 1124. This may be by connecting to the circular disc portion 1122 radially inwards and also axially below the swept volume.

(96) The lowermost portion of the dock is preferably the lower surface 1150 of the mounting member, so that when mounted flush on the surface of an object the retainer portion 1114 is free to rotate without contact with the object's surface. As an alternative, the lowermost portion may be the securing portions 1126, as shown in the figures, in which case use of spacers, such as washers, may be desirable. However, when mounted on flexible webbing or a belt the slight resistance to movement may be desirable.

(97) FIGS. 35 to 43 show another retainer assembly 1210 for use with the retention device. The retainer assembly 1210 is intended for mounting on a work belt of the like. The retainer assembly 1210 comprises base 1212, retainer 1214 and belt mounting 1216. The belt mounting 1216 may be used with the retainer assembly 1010.

(98) The base 1212 and retainer 1214 are similar to base 1012 and 1014 and when assembled function substantially the same. Accordingly, base 1212 has mating portion with aperture 1220, upper annular surface 1222 and recessed lower annular surface 1224 with recesses 1226. Retainer 1214 has side walls 1230 with cross walls 1232 and 1234, guide portions 1236 and securing portions 1238 with protrusions 1240 that engages in recesses 1226 to from a detent.

(99) The base 1212 differs from base 1012 in that it does not have slots corresponding to slots 1026. The retainer 1214 is formed to be flexible so as to allow the side walls 1230 to be squeezed together relatively easily. This allows the retainer to be inserted into the aperture 1220 from above. A first one of the securing portions 1238 of a first side wall is passed through the aperture 1220 from above so a part lies in the recess in the base. A compressive force is applied to the other side wall 1030 to urge it toward the first side wall, until the other securing portion 1238 clears the aperture 1220. The retainer is then rotated to pass the other securing portion 1238 through the aperture 1222 and the compressive force removed, so allowing the other securing portion 1238 to move under the base. As with the retainer of FIGS. 22 to 29, the ends 1232 and 1234 extend over the upper annular surface 1222 and secure the retainer in the base. After assembly of the retainer and base together a clip member 1240 may optionally be secured to the retainer 1214 from below to prevent accidental disassembly. The clip member 1240 comprises an elongate member 1244 with retention clips 1246 at each end. Each Clip 1246 has an angled upper surface 1248 and flat lower surfaces 1250. The retainer has two opposed slots 1252 to receive the clips 1246 of the clip member. The clip member 1242 is inserted into the underside of the retainer 1214 until clips 1246 pass though slots 1252 and spring out over surfaces 1254. As seen in FIG. 43 the clip member fits snugly against the tabs and so prevents the tabs being compressed inwards.

(100) The assembled retainer and base may be mounted on an object using mounting apertures 1250 or, optionally, mounted on or in belt mounting 1216.

(101) Belt mounting 1216 has two opposed side walls 1260 spaced to receive the base 1212. The ends of the side walls have tabs 1262 extending inwards and each tab has a downward extending protrusion 1264 that is received in mounting aperture 1266 of mounting member 1212. Side walls 1260 are joined by cross member 1268 that extends from the lower edge or lower region of side walls 1260. There may be more than one cross member 1268.

(102) As seen in FIG. 36, when the mounting member is mounted in belt mounting 1216 there is passageway 1270 between the mounting 1212 and the cross member 1268 though which a belt may be passed. The belt mounting is not intended to be permanently affixed to the belt but is intended to be able to be easily placed at an arbitrary position along a belt but once positioned remain relatively secure on the belt and not move along the belt. Accordingly, the cross member 1268 has a series of protrusions 1268 that extend toward the mounting 1212. The thickness of the belt with which the assembly is used is preferably greater than the separation of the protrusions 1272 from the bottom of the mounting member 1212, so the cross member 1268 is slightly flexed to cause the protrusions 1272 to engage the belt more than otherwise.

(103) When mounted on a belt the belt prevents the mounting member 1212 moving away from the upper tabs 1262 and disengaging itself from the belt mounting 1216.

(104) If desired the belt mounting may be permanently secured to a belt by stitching, riveting or the like. Suitable apertures may be provided to enable stitching, riveting or the like of the belt mounting to the belt.

(105) FIGS. 44 to 48 show another retainer assembly 1310 for use with the retention device. The retainer assembly 1310 comprises base 1212, retainer 1214.

(106) The base 1312 and retainer 1314 are similar to bases 1012, 1212 and 1014, 1214 and when assembled function substantially the same. Accordingly, base 1312 has aperture 1320 with upper annular surface 1322, recessed lower annular surface 1324 with recesses 1326. Retainer 1314 has side walls 1330 with cross walls 1332 and 1334, guide portions 1336 and securing portions 1338 with protrusions 1340 that engages in recesses 1326.

(107) The base 1312 differs from base 1012 in that it does not have slots corresponding to slots 1026 and retainer 1314 is not intended to be compressed to allow assembly.

(108) The mounting member 1312 has two slots 1350 that are sized and spaced to receive the extensions. An L-shaped tab 1352 extends into each slot 1350 and has an inwardly extending extension 1354. When the retainer is inserted from above into the aperture 1320 the securing portions 1338 pass into the slots 1350 and initially rest on the extensions 1354, as seen in FIG. 48.

(109) The vertical separation of the upper surface 1356 of the securing portions 1354 from the lower surface 1358 of lower annular surface 1324 is less than the thickness (excluding the protrusions 1340) of the securing portions 1338. It is thus necessary to push the retainer downwards relative to the mounting member to deflect the L shaped tabs 1352. Once deflected enough the retainer may be rotated to move the securing portions 1338 out of alignment with slots 1350. The annular surface 1324 may have angled surfaces 1360 to aid this.

(110) Once the securing portions 1338 are fully clear of the tabs 1352 they spring back to the un-deflected state and so the retainer is secured to the mounting member.

(111) In this embodiment the upper annular surface 1322 is raised relative to the surrounding parts of the mounting member. The retainer 1314 includes downward extensions 1362 and 1364 that extend beyond and down the sides of the raised portion of the mounting member. These downward extensions 1362 and 1364 may be omitted. Similarly it is not necessary that the mounting member 1312 has a raised portion around aperture 1320. In a similar manner, the other embodiments described may also have a raised portion around their central aperture and optionally the corresponding retainers may also have downward extensions.

(112) The assembled retainer and base may be mounted on an object using mounting apertures 1350 or, optionally, mounted on or in belt mounting 1216.

(113) It will be appreciated that the features of the invention described or mentioned in this document in relation to one or more implementations may be combined in any combination of features of one or more other implementations where features are not mutually exclusive.

(114) It will be apparent to those skilled in the art that many obvious modifications and variations may be made to the embodiments described herein without departing from the spirit or scope of the invention.