Abstract: An extendable leg for a stand or similar appliance having elongate members (13,14,15) interconnected to extend and retract with respect to each other includes a first member (13), intermediate member (14) and a final member (15). The intermediate and final members have releasable locking devices (16,17,18) adjacent to one end of the leg engagable with the first and intermediate members respectively. Remote release devices (19) are provided for releasing the locking devices from the other end of the leg to permit when released, the first member to the extended with respect to the intermediate member and the intermediate member to be extended with respect to the final member.

Abstract: A device for a receiver-type hitch used on vehicles for towing a load, wherein the device acts to prevent movement and resultant rattling between a receiver tube of the hitch and a ball mount shank. In operation, the receiver tube receives the ball mount shank. The device applies a force to the ball mount shank which presses the ball mount shank against the inside of the receiver tube and therein prevents movement.

Abstract: There is provided telescoping tube apparatus including an outer tube 11, an intermediate tube 12 and an inner tube 13. The tubes can be telescoped together to provide a single tube of variable length by use of joining sleeves 21 and locking sleeves 31. The joining sleeves 21 include jaw means 24 which is acted upon by the locking sleeves 31 to lock the tubes in the desired position.

Abstract: A horizontal-mount bracket system for holding sensor position with respect to a horizontal-mount bracket, wherein facial interaction between the bracket and the sensor body provides automatic setting of the air gap which setting is preserved such that if the sensor is ever reinstalled, the air gap is precisely reset to its original value. A multi-component bracket has first and second bracket components which lay juxtaposed, one atop the other. The first bracket component has a first sensor opening and the second bracket component has a second sensor opening wherein initially the first and second sensor openings are mutually communicating and aligned just sufficiently so that the sensor body is free to vertically move therein. The sensor body is placed into a sensor port of an engine block so that the tip of the sensor body rests upon a surface of a reluctor.

Abstract: In a device for holding a first member in position relative to a second member, the first member and the second member are connected by a clamping system having a clamping axle passing through the members. A relatively soft plastics material adhesion shoe is fixed to the second member. The clamping axle passes through the adhesion shoe. A metal rack having teeth is disposed on a base which is mounted on the clamping axle. When the clamping system is immobilized in a locked position, the teeth of the rack penetrate the relatively soft plastics material of the adhesion shoe in order to guarantee that the first member is held in position relative to the second member.

Abstract: A jack extension handle assembly that includes first and second elongated segments or extensions connectable together to provide a stable, extended jack handle. At the end of its solid rod-shaped body, one handle extension includes a tapered plug connector. A tapered socket connector at the end of the solid, rod-shaped body of the other handle extension mates with the plug connector during assembly of the handle. The plug and socket taperings account for forging tolerances so as to ensure a proper force-transmitting engagement between the handle extensions. The handle assembly also includes a retainer clip which externally mounts on the two handle extensions to prevent inadvertent separation of the handle extensions during use.

Abstract: An adjustable telescoping utility pole apparatus formed from a number of inter-received tubular members and frictional insert mechanisms. Each frictional insert mechanism has one end engaged with the inner diameter of the inner tubular member and a second end sidably engaged with the inner diameter of the outer tubular member.

Abstract: The framework has at least one vertical support column (3), into which a telescopically height-adjustable foot (4) connected to the support column (3) is inserted. An approximate presetting and subsequently a fine height adjustment are possible by means of a height-adjustable adjusting member (15), which is self-supporting at the foot (4).

Abstract: An adjustable leg for use with benches, stilts, and the like, the leg including a first strut having a first strut end wall defining an outer surface, the first strut end wall having a first aperture therein, a second elongate strut, the second elongate strut having a second strut end wall and being telescopically received in the first strut, the first strut end wall being adjacent the second strut end wall, the second strut end wall having a plurality of second apertures, a lever journalled for rotational movement about an axis outward of the outer surface on the first strut end wall, the lever having a first portion on one side of the axis of rotation and a second portion on the other side of the axis of rotation, a resilient biaser to urge the first portion of the lever away from the first strut end wall and a latching dog carried by the second portion of the lever end wall and being in register with the first aperture, the resilient biaser urging the latching dog into the first aperture whereby when the f

Abstract: A device for a receiver-type hitch used on vehicles for towing a load, wherein the device acts to prevent movement and resultant rattling between a receiver tube of the hitch and a ball mount shank. In operation, the receiver tube receives the ball mount shank. The device applies a force to the ball mount shank which presses the ball mount shank against the inside of the receiver tube and therein prevents movement.

Abstract: The locking terminal (18, 40, and 64) includes a plurality of cantilevered arms (56) defining a pocket (58). The arms (56), normally disposed in a retaining position for retaining a controlled member (62) in the pocket (58), are moveable to a receiving position for receiving the controlled member (62) into the pocket (58). The terminal (18, 40, and 64) further includes a locking means (65) for locking the arms (56) in the retaining position to lock the controlled member (62) in the pocket (58). The locking means (65) is movably supported by the terminal (18, 40, and 64) for movement between a locking position to lock the arms (56) in the retaining position and a release position allowing the arms (56) to move to the receiving position.

Abstract: A sleeve for a music stand includes a first part and a second part, each of the two parts has two first lugs respectively extending in opposite directions therefrom, a second lug located between the two first lugs corresponding thereto. The two parts are mounted to the rod of the music stand and connected to each other by a fastening member pivotally connected to the two respective first lugs on the two parts.

Abstract: The invention relates to a telescopic stand comprising at least three telescopic units per stand leg, wherein a clamping device which can be actuated via just one clamping lever per stand leg is provided at two fixing locations (A, B) of the central stand unit. For this purpose, the clamping device is connected together at the two fixing locations (A, B) by an actuating bar (42). This considerably simplifies the stand's handling in that far fewer clamping levers with respect to the prior art have to be actuated.

Abstract: An apparatus attaches to an automobile brake pedal lever in such a way as to allow a statuesquely small automobile operator the ability to adjustably control the total brake pedal length so that he can comfortably remain a safe distance from the steering wheel while still reaching the brake. This control apparatus has a leaf spring element that provides temporary self-supporting capability so that the optimum arrangement can be found before the controller is more stably connected to the existing brake pedal.

Abstract: An improved locking unit is disclosed for outrigger devices that are installed on a T-top equipped motorboat that has an outrigger pole supported by its inboard end above the T-top and which permits the outrigger pole to be rotated from a stowage position to a trolling position and vis versa by a person safely standing in the motorboat in the shelter of the T-top by manipulation of an improved locking unit which includes (a) a tubular member that extends through the T-top, (b) an arcuate tube, that supports the inboard end of the outrigger pole, is rotatably carried in the tubular member and has a radial hole in its lower end, (c) a locking collar fixed to the bottom end of the tubular member and having a quadrant long horizontal slot in its middle portion, (d) the inside end of a pin member extends through the radial hole & the horizontal slot and its outside end has a shackle, (e) a lever rod is pivoted at one end to the shackle and (f) the locking collar has indexing lugs to retain the lever rod in differe

Abstract: A friction adjustable positioning pivot includes a first shaft including a tapering threaded rod which defines a hollow space therein and a slot along a periphery thereof. An urging tube includes an inner threaded periphery for rotatably threading onto the tapering threaded rod of the first shaft and an inner smooth tapering periphery adjacent to the inner threaded periphery for limiting the tapering threaded rod to thread into the urging tube at a constant direction. A second shaft includes a rod portion which is received in the hollow space of the tapering threaded rod of the first shaft and is in contact with an inner periphery of the tapering threaded rod.

Abstract: A height adjustable cane includes an upper tubular member configured to slidably receive a second tubular member in a telescoping manner. A plurality of apertures are formed in the first tubular member which allows a button of a snap button assembly to pass therethrough and lock the tubular members against relative movement. Using the push-button assembly and the telescopic feature, the length of the cane may be adjusted. Increased stability between the tubular members is provided by a cam locking assembly including a housing receiving a cam member. The cam member includes a lever and a raised camming surface that selectively engages an outer surface of the second tubular member.

Abstract: A convertible stroller for convenient conversion between a plurality of configurations, comprising a frame structure, a back rest portion connected to the frame structure at a first pivot point to allow the back rest portion to recline between an upright and a reclined position, a foot rest portion connected to the frame structure at a second pivot point to allow the foot rest portion to rotate between a lowered position and an elevated position, and an arm bar slidably connected to the frame structure to allow the arm bar to move between a closed position and an extended position.

Abstract: An improved locking unit is disclosed for outrigger devices that are installed on a T-top equipped motorboat that has an outrigger pole supported by its bottom end portion above the T-top and which permits the outrigger pole to be moved by rotation of the lower end portion from a stowage position to a trolling position and vis versa by a person safely standing in the motorboat in the shelter of the T-top by manipulation of locking unit. Such locking unit includes (a) a tubular member, (b) a cylindrical collar fixed to the tubular member, (c) an indexing ring carried on the collar and having a plurality of side opening cavities, (d) a compression feature on the indexing ring selectively to prevent or permit such ring's rotation on the collar, (e) a rotation ring carrying a locking lever and (f) an arcuate tube that supports the bottom end of the outrigger pole is rotatably carried in the tubular member and is pinned to the rotation ring.

Abstract: A length-adjusting device for a control cable, which can be made compact, operated within a small stroke and kept securely locked, and can, as well, be assembled easily, comprising: an adjusting pipe (1), having latching teeth (5) thereon, to be fixed with an outer control cable and penetrated by an inner control cable, a base member (2), to be penetrated by said adjusting pipe (1) movably along the axis thereof, and fixed to a stationary member and an adjusting piece (30) with locking teeth (6) to engage with said latching teeth (5), wherein the movement of said adjusting pipe (1) relative to said base member (2) is locked by means of the engagement of said latching teeth (5) with said locking teeth (6), and the extent of said movement is restricted within a concave (4) of said adjusting pipe (1), after releasing said engagement (refer to FIG. 6 ).

Abstract: A bar rail comfort tray that includes a flat rectangular-shaped tray portion, a pair of short front legs, and a pair of long rear legs. The flat rectangular-shaped tray portion has a pair of skewed front corners and a pair of skewed rear corners. Each of the pair of short front legs extend downwardly from each of the pair of skewed front corners of the flat rectangular-shaped tray portion and have a shaped free end. Each of the pair of long rear legs extend downwardly from each of the pair of skewed rear corners of the flat rectangular-shaped tray portion and have a flat free end.

Abstract: An adjustable bicycle parking frame comprises a fastening plate, an inner rod, a support rod and an adjustment rod. The parking frame can be turned and located by a spring, an outer tube and a fitting ring, which are disposed between the fastening plate and the inner rod. Located at the bottom of the inner rod is a receiving space having on the top edge thereof a round hole in which a spring and a retaining block are received. The support rod is provided at the bottom thereof with a support block and at the top thereof with an outer threaded portion. The adjustment rod is provided axially with a fitting hole having therein at the midpoint thereof an inner threaded portion engageable with the outer threaded portion of the support rod. The fitting hole is provided therein at the top end thereof with a retaining groove engageable with the retaining block of the inner rod when the inner rod is fitted into the fitting hole of the adjustment rod.

Abstract: A cable mechanism has an adjustment portion which allows the cable length to be adjusted at assembly. A first movable lock member is provided to prevent inadvertent early adjustment of the cable length by stabilizing a lock member on the cable in an unadjusted position prior to removal of the first lock member. A second movable lock member is provided to maintain the cable lock portion in the adjusted position and to prevent inadvertent disconnection of the cable adjusting mechanism.

Abstract: A length-adjusting device for a control cable, which can be made compact, operated within a small stroke and kept securely locked, and can, as well, be assembled easily, comprising: an adjusting pipe (1), having latching teeth (5) thereon, to be fixed with an outer control cable and penetrated by an inner control cable, a base member (2), to be penetrated by said adjusting pipe (1) movably along the axis thereof, and fixed to a stationary member and an adjusting piece (30) with locking teeth (6) to engage with said latching teeth (5), wherein the movement of said adjusting pipe (1) relative to said base member (2) is locked by means of the engagement of said latching teeth (5) with said locking teeth (6), and the extent of said movement is restricted within a concave (4) of said adjusting pipe (1), after releasing said engagement (refer to FIG. 6).

Abstract: An ascending/descending structure including a pull bar, a locking pin, a resilient retaining member and a locking tube formed with saw teeth-like locking notches for reliably locking the locking pin. The pull bar can be pulled outward along the locking tube for adjustment of height without slipping off or displacement. When the pull bar is reversely pushed inward, by the guide slot of the retaining member, the locking pin temporarily kept in a fixed position, permitting the pull bar to be pushed inward to the bottom of the locking tube for further adjustment of height.

Abstract: A device (10) is disclosed including a shelf (80) mounted to a lift tube (76) of a lift sub-assembly (74). An adjustment cone (88) is secured to the lower end of a rod (86) having its upper end pivotably secured to a handle (82) in turn pivotably secured adjacent the upper end of the lift tube (76). The lift tube (74) is slideable in cylindrical inner surfaces (58) of top and bottom bushings (50, 68) separated by positional spacers (66) having inner surfaces spaced from the lift tube (76). Indexing spacers (26) are slideably received and stacked end-on-end inside a vertical tube (18) below the bushings (50, 68) and the positional spacers (66).

Abstract: A cable mechanism has an adjustment portion which allows the cable length to be adjusted at assembly. A first movable lock member is provided to prevent inadvertent early adjustment of the cable length by stabilizing a lock member on the cable in an unadjusted position prior to removal of the first lock member. A second movable lock member is provided to maintain the cable lock portion in the adjusted position and to prevent inadvertent disconnection of the cable adjusting mechanism.

Abstract: A simple, finitely indexable bicycle crank arm extender that is readily, universally and securably installable on a bicycle crank arm including an elongated member having an inner end, an outer end and a plurality of transverse, threaded throughbores. The inner end of the elongated member mounts on the crank arm with a U-bolt that clamps the elongated member and crank arm together. The outer end of the elongated member mounts on the crank arm with a threaded fastener that is received in the distally-disposed threaded bore of the crank arm and threadingly engages one of the plurality of threaded throughbores in the elongated member. A pedal is rotatably mounted at the outer end of the elongated member.

Abstract: The adjustable level play desk is for a child. It comprises at least three elongated legs of substantially circular cross section, each of the legs having a lower end for resting on the ground and an outer cylindrical surface provided with a first locking device; and a top body having an upper play surface, and at least three sleeves oriented downwardly when in use, the sleeves being for slidably receiving respectively the legs, the sleeves being solid with the top body at positions providing steadiness thereof.

Abstract: A training golf club with a spring-loaded hinge between two club half-shafts which "breaks" if the club swing is skewed or jerky is disclosed. First and second main hinge components lie side by side with a pivot shaft passing through them and with offset shanks for attachment to the club half-shafts. Springs and balls are located in bores in the first main hinge component, the balls engaging in depressions in a circular track on the second main hinge component when the two shanks are aligned. The other ends of the springs bear, via balls, against an adjustment ring. On rotation of this ring, the balls engage in one of a plurality of sets of depressions of different depths in the ring, so adjusting the "break" force of the hinge.

Abstract: A block includes first and second through holes extending from an upper side thereof through a lower side thereof. A necking passage section is defined between and thus communicates with the first and second through holes. A lower end of the first through hole coincides with the lower end of the second through hole. The first through hole has a central axis which is at an angle to that of the second through hole. The first through hole has a diameter the same as that of a rod to which the block is mounted. The upper end of the second through hole has a diameter greater than that of the rod and tapers to the lower end of the second through hole which coincides with the lower end of the first through hole. The necking passage section is resilient to allow the rod to be forcibly moved between the first and second through holes. An antislip member is provided to an inner periphery of the first through hole. The rod is retained in position when it is received in the first through hole.

Abstract: This invention relates to a clamping and holding device and more particularly to a clamping and holding device which can be attached to articles such as patio chairs to mount a holder for umbrellas and the like in a variety of positions. The device provides a first clamping arm and a second clamping arm pivotally connected to one another to engage an article. A holder extending laterally from the first clamping arm is provided to hold a tray, umbrella or the like. The holder may be locked in a variety of positions. A cam, cam follower and locking member or nut and bolt system prevents the inadvertent opening of the clamping arms.

Abstract: Device for adjusting the position of suction grippers on a sheet transfer drum for conveying sheets in a sheet-fed rotary printing press, at least some of the grippers being formed as suction grippers, at least one guide bar carried by the sheet transfer drum, holding elements mounted on the guide bar and having the respective suction grippers seated thereon, the suction grippers being manually displaceable along a generatrix of a cylindrical outer surface of the sheet transfer drum perpendicularly to a sheet conveying direction and being fixable thereon, includes a respective manually actuatable locking member connected to each of the holding elements for retaining the respective holding element in position on the guiding bar by frictional forces applied to the guiding bar at opposite sides of the respective holding element, the clamping element being an individual spring.

Abstract: A length-adjusting device for a control cable, which can be made compact, operated within a small stroke and kept securely locked, and can, as well, be assembled easily, comprising: an adjusting pipe (1), having latching teeth (5) thereon, to be fixed with an outer control cable and penetrated by an inner control cable, a base member (2), to be penetrated by said adjusting pipe (1) movably along the axis thereof, and fixed to a stationary member and an adjusting piece (30) with locking teeth (6) to engage with said latching teeth (5), wherein the movement of said adjusting pipe (1) relative to said base member (2) is locked by means of the engagement of said latching teeth (5) with said locking teeth (6), and the extent of said movement is restricted within a concave (4) of said adjusting pipe (1), after releasing said engagement (refer to FIG. 6).

Abstract: A golf ball retriever comprises a cylindrical receiver with an inner surface of a diameter slightly larger than a standard golf ball, triangular protrusions or ribs extending upwardly and out from the inner surface at an angle of 5 to 11 degrees, connection tabs, and a stop; a retainer that is substantially V-shaped, with its arms extending over the cylinder; and a telescoping rod with at least two pieces of hollow tubing having different diameters and connected with a tapered shim, a plug, and a cap with a glue reservoir. The receiver rotatably mounts to the retainer, which in turn mounts to the telescoping rod. The telescoping rod is formed by plugging one end of a piece of hollow tubing, wrapping the tapered shim around the tubing, inserting the plugged tubing and shim into a larger piece of hollow tubing, placing a cap over the intersection of the two pieces of tubing, and gluing the cap to the larger piece of hollow tubing.

Abstract: A hinge assembly is provided for an orthopedic brace having a rotatable hinge and a detent mechanism to automatically, yet releasably, lock the hinge in a fixed position of rotation. The hinge includes two rotatably attached members and the detent mechanism includes an indentation formed in the attached end of one member and a block pivotally mounted on the other member. The block has a locking projection that is biased toward the indentation and cooperates therewith to provide three positions of operation, a locked position, a release position, and an activated position. In the locked position, the locking projection fittingly engages the indentation, thereby substantially preventing rotation of the hinge. The release position displaces the locking projection a radial distance away from the indentation, thereby permitting the hinge to rotate freely.

Abstract: A support leg for a musical instrument bass drum including a base on the drum body having an annular gear surface, a leg pivotally supported to the base at the center of the gear surface, and gearing on the leg for meshing with the gear surface on the base for preventing swinging of the leg with respect to the base. A spring urges the base and leg apart to permit the leg to pivot. A bolt is tightened to move the gear surface and gearing into meshing. Cooperating stoppers on the base and the leg establish the use and nonuse swing positions of the leg with reference to the base. The support leg includes a main body and a leg that expands or contracts with reference to the body and a clamp for clamping the leg at a selected expanded position. A display on the main body displays the expanded position of the leg with respect to the body.

Abstract: A space suit sizing device using a ball nut and screw drive mechanism to shorten and lengthen components of a space suit. The device includes a rotatable member having an outer race formed on an inner surface thereof, and a translatable member having an inner race formed on an outer surface thereof. A plurality of recirculating balls are located in a space defined by the inner and outer races. As the rotatable member is rotated by hand, the translatable member is caused to move in and out of the rotatable member. Since one component of the space suit is connected to the translatable member, the length of this component varies in accordance with the position of the translatable member.

Abstract: A knee hinge with selectively limited motion which optionally limits an available flexion range of a user's knee to approximately 24 degrees so that a user will not fall should the user buckle at the knees. The hinge may be released to provide for a greater range of knee flexion which will allow a user to sit down in a conventional manner. The approximately 24 degree limit of the flexion range is automatically re-engaged when the user's knee is straightened. The hinge provides a spring mechanism for assisting weak knee muscles. The hinge also allows a small degree of knee hyperextension for the purpose of allowing the user to assume and maintain a safe standing position.

Abstract: A motion transmitting remote control assembly 10 of the type for transmitting motion along a curved path comprising a conduit 12, a flexible motion transmitting core element 14 movably supported within conduit 12, and an adjustment member 16 connected to one of the conduit 12 and core element 14 for adjusting the effective length thereof. The adjustment member 16 comprises an adjustment housing 24 having a first opening 30, a slider member 26 movably disposed in the housing 24, and a locking member 28 movably disposed in the first opening 30 between a locked position to prevent adjustment of the slider member 26 relative to the housing 24 and an unlocked position to allow adjustment of the slider member 26 relative to the housing 24. The housing 24 has bridges 74 extending across the first opening 30 for alternatively holding the locking member 28 in the locked and unlocked positions.

Abstract: The steering bearing assembly includes a bearing assembly with an upper race that has a circular inner periphery and a tubular protrusion that extends axially from the inner periphery. The tubular protrusion is provided with a plurality of axial splits and an externally threaded wall which tapers gradually toward a free end thereof. A positioning seat with an internally threaded wall that complements the external wall of the tubular protrusion is mounted around the latter and above the upper race in such a manner that the free end of the tubular protrusion extends beyond the uppermost portion of the positioning seat. The tubular protrusion retracts radially and inwardly upon tightening of the positioning seat.

Abstract: A coupling system for joining articulated fence segments at a desired relative angle.

Abstract: A device comprising a housing including first and second housing members. The first housing member is selectively rotatable relative to the second housing member between first and second operating positions. The longitudinal axis of the first housing member is disposed at a substantially 90.degree. angle relative to the longitudinal axis of the first housing member when in the first operating position. The longitudinal axis of the first housing member is disposed substantially coaxial with the longitudinal axis of the second housing member when in the second operating position. An actuator includes a locking arm selectively engagable with the first housing member for retaining the member in a selected operating position when in engagement therewith.

Abstract: The swivel joint for a support arm adjustably receiving an appliance, lighting fixture or the like, in which hoses, cables, lines or the like can be passed through the support arm and the swivel joint and can be fixed to the swivel joint and to the support arm; the swivel joint has two joint shells (3, 4), which are limitedly rotatable about a common axis (2) and are held together axially, each having one tubular outrigger arm (5, 6) for connection to one support tube segment (7) each, and both joint shells (3, 4) can be released by an actuation element (8) to move them into various rotary positions and can be locked in the particular rotated position.

Abstract: The present invention relates to invalid walkers which are designed to aid the handicapped. Specifically, the present invention relates to an attachment to an existing walker, or a modified existing walker which is hand operated and designed to be made adjustable to accommodate inclines or stairs. This walking aid will enable persons using it to ascend and descend stairs and inclines much easier.

Abstract: This invention relates to a clamping device and more particularly to a clamping device which can be attached to articles such as patio chairs to mount a holder for umbrellas and the like in a variety of positions. The device comprises a main body including a barrel and a first clamping arm extending laterally in one direction from one end of said barrel, a second clamping arm pivotally mounted at the other end of said barrel and adapted to cooperate with the first clamping arm to engage an article upon which the clamping device is to be mounted, a holder extending laterally from said one end of said barrel in a direction other than said one direction, means for mounting said holder on said barrel to provide a position permitting pivotal movement and a position in which the holder is locked, spring means within the barrel acting to bias the mounting means to a locked position while permitting movement of the mounting means to the position permitting pivotal movement.

Abstract: An arm rest (1) for motor vehicle seats comprising a body (2) and a load bearing structure (4) provided with swinging mounting means relative to a connecting element (9) adapted to be fixed to a lateral side (F) of seat backrest (B). The load bearing structure (4) has a tubular end portion (5) coaxially rotatable on a stationary shaft (7) with rotational friction and with respective stop numbers (24, 13) between a raised position and a lowered position of the arm rest (1).

Abstract: A rack structure mounted to a vehicular hitch socket is provided to include a first support tube received within the hitch socket, with a second support tube pivotally mounted in a selective latching arrangement relative to the first support tube, with a third support tube fixedly and orthogonally mounted to the second support tube containing a plurality of hook legs thereon for engaging a bicycle frame for support of the bicycle relative to the rack apparatus.

Abstract: An expandable endoprosthesis for a joint and adjacent bone parts has first and second joint component parts. The second component has a part at one end thereof for a portion of a joint. The second component has a telescoping stem coupled to its joint part for attachment to a long bone. The telescoping stem has an inner and an outer member axially adjustable with respect to one another by means of a threaded spindle and a threaded spindle nut attached respectively to either the inner or outer member. A pinion gear is attached to either the spindle or spindle nut for rotation therewith. An indexing system is provided to rotate the pinion a predetermined amount upon movement of the first and second joint components towards one another after implantation and thereby lengthen the second joint component stem.

Abstract: An adjustable linkage assembly has a longitudinally extending body member with a central section and a spaced pair of flattened portions at each end thereof. An opening is formed in each of the flattened portions and one of the openings is elongated. Each opening receives a trunnion.