Abstract: A hand held power assisted apparatus is provided for assembling a rigid tube into a flexible hose in an automobile assembly line environment. The apparatus includes a frame with first and second gripper assemblies mounted on the frame. An actuator assembly is connected between the frame and the first gripper assembly for moving the first gripper assembly toward the second gripper assembly to insert the rigid tube into the flexible hose.

Abstract: The tool set is preferably made in three pieces; a main spear that attaches to and extends from the assembly shaft that projects through a mounting wall of the transmission housing, and holds the selected assembled parts together; an alignment spear that engages one bolt hole on the assembly and passes through a hole in the housing intended for a mounting bolt; and a spacer sleeve to engage the spear and extend to part of the assembly. The main spear and spacer sleeve can be one part if preferred.

Abstract: A movable wall for separating an interior of a housing for a brake booster into a first chamber and a second chamber. The movable wall is characterized by a diaphragm, a backing plate and a hub member. The diaphragm has a peripheral bead secured to the housing and an axial bead located in a groove in a cylindrical body of the hub member. The groove has a front face that is separated from a rear face by an arcuate transition surface located between a bottom of the groove and the front face. The axial bead has a profile corresponding to the groove and an arcuate lip that extends from a rear surface. The lip is connected by a convolute to a radial section of the disc portion of the diaphragm while the backing plate has an axial opening surrounded by a radial surface that engages the front face of the groove. The axial bead engages the radial surface to urge the radial annular surface into engagement with the front face of the groove while sealing the front chamber from the rear chamber.

Abstract: A stent container has a first wall at the proximal end and a second wall at the distal end. The first wall has an opening therethrough sized for receiving an uncrimped stent therethrough. The opening opens into a chamber which is reducible in size from a first enlarged size to a second reduced size. The chamber in the first enlarged size is sized for receiving an uncrimped stent therein. A plurality of bars extend from the first wall to the second wall. The bars are movable between a first position and a second position. The plurality of bars in the first position and the first and second walls define the periphery of the chamber in the enlarged size. The plurality of bars in the second position and the first and second walls define the periphery of the chamber in the reduced size. A stent disposed in the chamber may be reduced in size by reducing the chamber from the first enlarged size to the second reduced size.

Abstract: A tool is disclosed for installing communication cable. The tool has a handle, a first arm extending from the handle, and a second arm extending from the handle. The first arm has a wheel rotatably mounted to the first arm, and the wheel includes a circumferential groove. The second arm includes a cable guide for guiding the communication cable to the groove in the wheel. The handle is used to roll the wheel along a cleft, and the communication cable feeds through the cable guide to the groove in the wheel and the wheel stuffs the communication cable into the cleft.

Abstract: A transport and assembly device for assembling a shaft seal, particularly one with a seal lip directed radially toward the inside, into a camshaft arrangement for an internal combustion engine is designed to simplify the assembly of the shaft seal. The device includes a first intake area for the shaft seal, a second intake area for a signal generator wheel, and an installation area for installation onto the camshaft arrangement during assembly.

Abstract: A mounting apparatus for mounting a hollow work-piece on a machine includes a circumferential groove formed into an outer surface of a cylindrical supporting fixture of the machine, a dampening plug assembly for positioning inside the hollow workpiece adjacent the cylindrical supporting fixture, and an end pressure reducing device for mounting within the circumferential groove for centrifugally supporting and enabling the reduction of machining-induced pressure from the end of the hollow workpiece.

Abstract: A simplified tool for removing and inserting a plumbing fixture seal, particularly for use with ball type faucets using a rubber seal engaged by a cylindrical compression spring. The tool comprises an outer housing; an inner member having a tapered end designed to frictionally engage the seal and spring, the member being reciprocally disposed within the outer housing, the inner member being retracted inside the outer housing by a retraction spring; and a mechanism for extending the tapered end of the inner member beyond the end of the outer housing sufficient to engage the seal and spring.

Abstract: A puller (10) for removing a compression sleeve from a pipe (38) generally comprised of a cylindrical body (24) containing on one end an internal cavity (28) to receive the pipe (38) and an external double thread (30) to engage a compression nut (34) and on the opposite end a threaded through screw (14) entering the cavity (28). A disk (22) attached at one end of the screw (14) bears on the end of the pipe (38) and a torque handle (12) at the other end is used to supply increasing pressure against the end of the pipe (38). The puller (10) is threadably attached to the compression nut (34) placing the pipe (38) into the internal cavity (28) against the disk (22) while the compression sleeve (36) is contained between the compression nut (34) and the puller (10). Turning the torque handle (12) urges the compression nut (34) and the compression sleeve (36) toward the end of the pipe (38) until the compression nut (34) and compression sleeve (36) are freed from the pipe (38).

Abstract: A method and assembly of replacing a receptacle seal is provided. A seal removal kit includes a poppet depressing member, retaining collar, seal removing tool, and a seal insertion sleeve that allows the seal to be replaced without removal of the receptacle or portions thereof from a vehicle.

Abstract: A seal puller tool head (10) has a blade forming an elongated, flat, metal shank (12) and a hook (16) that is disposed at one end of the shank, above a top face of the shank, such that it lies no more than partially in the plane of the shank. The hook is angled or offset above the shank for use in penetrating the interface between a sealed shaft and a shaft seal without scratching the shaft or requiring extreme lateral tilting of the shank to establish a hooked engagement on the inside face of the seal. The shank (12) is coated with cushioning or protective material to further avoid scratching the shaft, and a backside edge opposite the opening of the hook may carry a wear strip (42) as further protection. A base (14) is suitably configured to be engaged by a wrench, slide hammer, or lever for manipulating the hook in tight clearances. A fulcrum also engages the lever in variable position.

Abstract: A seal attachment fixture and method are provided for attaching a seal to an encapsulated gasket disposed on a work piece, for example, an automotive window assembly. The seal attachment fixture includes fixture members, which slidably move into contact with openable lip portions on the gasket, thus exposing a retention slot defined therein. With the gasket retention slot open, a seal is then inserted within the slot.

Abstract: A multi-purpose automatic handheld installation tool for installing and removing vinyl and plastic resilient bumper inserts into the channels of gunnel rails on the sides of boats, vehicles, motorhomes, trailers, and the like, as well as on the sides of tables, walls and shelves. The tool compresses sides of bumper inserts in order to be easily inserted to the channels of the gunnel rails. A base handle and a secondary handle allow for easy holding of the weight of the tool. The tool handle is oriented to run consistently parallel over the gunnel rails when being used. A guide member allows the tool to follow the path and direction of the gunnel rails, and allows the tool to be consistently maintained at an inclined position and where the handle is substantially parallel overlaying the gunnel rails without having to free-hand support the orientation of the tool. The tool can be powered by a battery or a wall plug power source or pneumatic source.

Abstract: A fixture for assembling a post-CMP cleaning brush. The post-CMP cleaning brush is provided with a brush core and an outer brush, and the outer brush is provided with a hollow portion. The fixture comprises a base, a plurality of posts and a guiding member. The base is provided with a plurality of holes. The posts insert into the holes of the base through the hollow portion of the outer brush respectively so as to assist the brush core in passing through the hollow portion of the outer brush. The guiding member is connected with the brush core to assist the brush core in passing through the hollow portion of the outer brush.

Abstract: The invention relates to an assembly tool for assembling a sealing ring (3) in an annular groove (4, 9) of a machine part (1, 7), in particular of a valve plate (7). By the provision that the assembly tool (10, 23) includes a pneumatic piston-cylinder unit (11, 12, 26, 27) for uniformly press-fitting the sealing ring (3) into the annular groove (4, 9), a simple assembly tool that is economical to make, is versatile to use and can be used in mobile application, and nevertheless enables reliable seal assembly without injuring anyone.

Abstract: An apparatus (50) and method for inserting a gasket (32) Into a channel (28) of a mating part (20). The apparatus includes a gasket carrier (66) having a convexly carved surface with a groove (78) therein for receiving a base (34) of the gasket. The groove registers with the channel to feed the gasket into the channel in response to relative rocking movement between the part and the surface. According to the method, a gasket is placed in the groove and the gasket carrier it juxtaposed with the part to align the gasket with the channel. The part and the gasket carrier are moved toward each other for a portion of the gasket to enter the channel. A relative rocking movement is caused between the part and the gasket carrier to transfer the remainder or the gasket to the channel.

Abstract: An apparatus for mounting a sleeve on a spindle includes a frame, and a finger arrangement movably mounted on the frame, the finger arrangement including a plurality of fingers arranged at a common first radius around an imaginary centerline of the finger arrangement, the fingers being movable radially outwardly from the first radius to a second radius upon application of an outwardly directed force. A sleeve having an internal opening in which the fingers are disposed is adapted to be mounted on a stationary spindle by movement of the finger arrangement on the frame toward the spindle. A method for mounting a sleeve on a spindle is also disclosed.

Abstract: A tubing installation system and method having a length of flexible tubing, a handle having a first end and second end and at least one wheel rotatably mounted to the first end. The at least one wheel has a circumferential portion with a complimentary shape to at least a portion of the tubing and an axis of rotation substantially perpendicular to the handle. The circumferential portion is used to urge the tubing into a tubing recess.

Abstract: An apparatus for assembling a post-CMP cleaning brush. The post-CMP cleaning brush is provided with a brush core and an outer brush, and the outer brush is provided with a hollow portion. The apparatus comprises a base, a fixed member, a sliding member, a plurality of posts, and an actuating device. The base holds the brush core and the outer brush, and the fixed member is disposed on the base. The sliding member is disposed on the base in a manner such that it is located at the opposite side of the fixed member relative to the outer brush disposed on the base. The posts, disposed on the sliding member, pass through the fixed member and the hollow portion of the outer brush so as to assist the brush core in passing through the hollow portion of the outer brush. The actuating device connects with the brush core so as to pass the brush core through the hollow portion of the outer brush and separate the posts, inserted into the outer brush, from the outer brush.

Abstract: A guide portion is provided on an upper end of a fitting portion of a weather strip at a front portion of a body of the tool. A sealer member, into which a sealing portion of the weather strip is inserted and which possesses a press guide member for pressing the upper surface of the fitting portion is provided on a portion behind the guide member of the weather strip. A vibrator, which imparts the vibration to the sealer member, is stood on the sealer member.

Abstract: A tool for disengaging electrical connectors includes a central body section with disconnecting prongs projecting from the opposite ends thereof. The prongs are offset relative to the plane of the body section but extend in the same direction so that one set of the prongs forms an arcuate surface which facilitates the use of the prongs to disengage connector sections.

Abstract: At least one installation plate is mounted on a base frame, every installation plate having at least one movable plate segment and means for changing the position of every movable plate segment. In order to exactly position the sealing strip to be bonded relative to the installation surface of the vehicle door, every movable plate segment is associated with a reference plunger that is mounted on the base frame so as to be displaceable in the axial direction. The reference plunger extends from the base frame in the direction of the movable plate segment and can be locked relative to the base frame. The reference plunger has on one end an adjustable cam that can be brought into the released from engagement with the vehicle part. At a distance from the cam, the reference plunger is provided with a stationary stop against which the associated plate segment can be moved.

Abstract: An apparatus and method of applying an expandable member, such as an O-ring, to a part to from an installed part. The apparatus and method comprise a piston slidably positioned within a housing with a slidable sleeve interposed between the housing and the piston. The piston has an expandable member engagement surface on a leading end thereof. During operation, the expandable member is transferred from a holder to the exterior surface of the slidable sleeve. The slidable sleeve is then positioned sleeve about the part and relative movement of the housing with respect to the sleeve, transfers the expandable member from the sleeve and onto the part.

Abstract: Apparatus for removing valve seals from a cylinder head of an engine. More particularly, valve seal removal apparatus having a lever and at least a pair of gripping members for frictionally gripping a portion of a valve seal.

Abstract: A tool for expanding flexible rubber boots such as cv boots, bellows and seals for easy mounting over and removal from mechanical joints including a mandrel having a base section with a perimeter having an opening and a plurality of spokes, each spoke being movably arranged with respect of the base section, to move from a first converged angle to a second open angle, and from a second open angle to a converged first angle, opening and closing the mandrel. The base section includes a crenellated rim with slots between adjacent crenellations, and the plurality of spokes are pivotally mounted in the slots between adjacent crenellations of the rim by pins, whereby the spokes can only pivot radially from a closed position to an open position with respect of the base section, and vice versa.

Abstract: A piston-pin lock-ring-insertion tool has a ring-insertion tube (1) in ring-insertion relationship to a ring pusher (2). The ring-insertion tube has an inside periphery with a press-close taper (8) that is tapered inwardly from a ring-feeder end (6) to a ring-guide bore (9) that is cylindrical uniformly intermediate the press-close taper and a ring-insertion end of the ring-insertion tube. The ring-insertion end (7) of the ring-insertion tube has a perpendicularity surface (10) that is adapted for alignment of the ring-guide bore and a piston-pin bore (4) in a crankshaft-engine piston (5). The ring pusher has a pusher taper (26) with a pusher head (12) adapted for being buttressed against a side of lock ring (3) for pushing the lock ring from a major diameter to a minor diameter of the press-close taper proximate a circumferential entrance to the ring-guide bore. The ring pusher has a slide rod (13) that is oppositely disposed end-to-end from the pusher head.

Abstract: A method is disclosed for removing a seal that is fixed in a groove of a component. A highly pressurised jet of liquid is aimed at the seal or between the seal to free it from the groove. The method is particularly suitable for freeing a sealing strip in a rotor or in a housing of a turbine-type machine, and is considerably less time-consuming and expensive than the twisting-off method that has been used up until now.

Abstract: An apparatus for sealing perforations, holes, cracks or the like in a tube or pipe and particularly in an oil well casing. The apparatus including a delivery tool for delivery of a coiled patch composed of spring-like material to the location of a damaged portion within a pipe. The patch consisting of a flat sheet of spring-like material where the length and width of the patch are comparatively large with respect to the thickness of the patch. The delivery tool comprising a hydraulicly activated plunger assembly and barrel. Prior to use, the patch is wound into the form of a coiled cylinder by means of a rolling tool and is loaded into the barrel of the delivery tool. To deploy the patch, hydraulic pressure is applied to the plunger assembly causing the plunger to move downwardly within the barrel and push the patch out of the barrel. Upon deployment, the patch unwinds within the pipe or tube and seals the damaged area against the infiltration or exfiltration of fluids or gasses.

Abstract: The patent illustrates an apparatus for radially expanding an elastic handgrip on its axis of elongation to allow easier introduction of a shaft to the elastic handgrip by an open end of the grip. The main body of the apparatus provides support for the shaft and fixes the position of grip end expansion wedge. A tail stock section provides a cup for receiving an end of the grip and positioning the grip to introduce a ventilation probe to the grip. An alignment laser is built into the tail stock for aligning a golf club shaft. The tail stock and main body are separable to allow different sizes of grips to be readily handled.

Abstract: An apparatus for urging two members apart or together that includes a first clamp adapted to be received by a first piece, a second clamp adapted to be received by a second piece and a plurality of power screws coacting with the first clamp and the second clamp, whereby moving the power screws in a first direction causes the first clamp to move relative to the second clamp and the first piece to move relative to the second piece. The present invention is suited for separating muffler pipes.

Abstract: A sliding hammer type seal puller for removing oil seals from vehicle drive line components. The device comprises a sliding hammer mounted on a steel rod. A handle is mounted at one end of the rod, followed by an impact collar for engagement with the sliding hammer. The other end is flared with a 90-degree bend at the extreme end. In use, the angled end of the seal puller is inserted into the space created between the shaft and the oil seal after the removal of a drive shaft yoke. The angled end of the device is then maneuvered to engage the inside diameter of the seal. Pulling the sliding hammer backwards unseats the seal, which is then easily disengaged and removed from the housing of the drive line assembly component.

Abstract: A stuffer pin for a rotatable, two part fluid quick connector carries the seal elements and a retainer housing carrying a retainer for mounting the seal elements in the bore of a first component of the fluid quick connector and positioning the retainer housing for locking and rotatable engagement with the first component. A flange on the stuffer pin prevents premature movement of the retainer in the retainer housing to the fully latched position until the stuffer pin is removed from the assembled two part fluid quick connector. The flange does not interfere with the ability of the stuffer pin to carry an axially displaceable retainer in the retainer housing.

Abstract: An assembly is provided which can crimp or compress an intraluminal device or measure the radial strength of an intraluminal device. The crimping assembly includes at least two moving-element subassemblies, each with a pair of moving elements. The moving elements having a first side and a second side joining at a tip. The moving-element subassembly is able to move in such a way that the moving elements move relative to each other from a first position with the tips offset from each other by a first distance, to a second position with the tips offset from each other by a second distance different than the first distance. The assembly also includes a movement assembly that interfaces with each of the moving-element subassemblies. The movement assembly moves the pairs of moving elements between the first position and the second position.

Abstract: The Vendable Armaflex consists of a combination of Armaflex with spring in different diameters and allows to maintain the diameter and thickness necessary of the Armaflex according to the application.

Abstract: A seal puller tool head (10) has a blade forming an elongated, flat, metal shank (12) and a hook (16) that is disposed at one end of the shank, above a top face of the shank, such that it lies no more than partially in the plane of the shank. The hook is angled or offset above the shank for use in penetrating the interface between a sealed shaft and a shaft seal without scratching the shaft or requiring extreme lateral tilting of the shank to establish a hooked engagement on the inside face of the seal. The shank (12) is coated with cushioning or protective material to further avoid scratching the shaft, and a backside edge opposite the opening of the hook may carry a wear strip (42) as further protection. A base (14) is suitably configured to be engaged by a wrench, slide hammer, or lever for manipulating the hook in tight clearances. A fulcrum also engages the lever in variable position.

Abstract: A decorative electrical cord cover and deployment member comprising a removable, tubular cover constructed from a longitudinal portion of fabric material having a circular cross-section and a predetermined length and width. The longitudinal portion of fabric material has its longest edges permanently secured forming the tubular cover. The tubular cover is applied to a hollow deployment member for facilitating deployment of the cord cover onto one or more electrical cords. In the preferred embodiment, the longest edges of the fabric material are permanently secured with color coordinated sewing thread and the deployment member is cylindrical. A method for applying the cord cover onto the deployment member, as well as a method for deploying the cord cover from the deployment member onto one or more electrical cords are also disclosed.

Abstract: A stuffer pin for a rotatable, two part fluid quick connector carries the seal elements and a retainer housing carrying a retainer for mounting the seal elements in the bore of a first component of the fluid quick connector and positioning the retainer housing for locking and rotatable engagement with the first component. A flange on the stuffer pin prevents premature movement of the retainer in the retainer housing to the fully latched position until the stuffer pin is removed from the assembled two part fluid quick connector. The flange does not interfere with the ability of the stuffer pin to carry an axially displaceable retainer in the retainer housing.

Abstract: A gasket singulation apparatus for separating one gasket from a web-connected stack of gaskets includes a mandrel for receiving the web-connected stack and an arrangement of cylinders which are used to support the web-connected stack of gaskets and to pull one gasket away from the remainder of the web-connected stack so as to singulate that one gasket. A first plurality of cylinders are used to support the web-connected stack. A second plurality of cylinders are used to pierce any connecting material between the gasket to be singulated and the remainder of the stack. Once the web material is pierced, cylinder movement is effected so as to pull the selected gasket away from the stack, allowing any connecting material to sever and thereby singulate one gasket from the stack. Once the gasket is singulated, various insertion mechanisms are disclosed for inserting the singulated gasket into a pail lid groove.

Abstract: A pneumatic tool for facilitating the installation and removal of a hollow, elastically extensible handgrip on a tubular portion of a device such as, for example, the handlebar of a bicycle or motorcycle. The tool has a handle portion adapted to be comfortable gripped by the hand. A proximal end of the handle portion is adapted to provide a leak-proof connection to a source of compressed air. The distal (opposing) end of the handle portion has an extension portion extending distally therefrom with a relatively short insertion tip portion having an air injection port extending laterally from a distal end of the extension portion. An air-conducting conduit is coextensive with the handle, extension and insertion tip portions of the tool. The air injection port is in fluid communication with the source of compressed air via a valve such as a piston valve. The valve controls the flow of air through the conduit.

Abstract: The invention relates to a method and apparatus for assembling in an automated manner a sealing profile on an inner door for refrigerators. The method comprises the stages of: a) providing said profile (1) in the form of a frame welded at the corners, b) stably resting said frame on a support (10), c) gripping said section (4) along all the sides of said frame using engaging means (12) so as to perform said elastic splaying, d) retaining said sections (4) in the splayed position, e) positioning said inner door (31) on said sections (2) of said profile base, f) releasing said sections (4) so as to allow the elastic return of the profile base onto the edge of the inner door, g) extracting inner door and profile thus assembled from said support.

Abstract: A rubber ring coupling apparatus for coupling rubber rings with an object includes a ring cartridge and expansion elements. A rubber ring is held in an expansion opening located in the ring cartridge. The expansion elements are disposed into the rubber ring and expanded along expansion slots formed in the ring cartridge. Then the object is inserted into the rubber ring and the expansion elements are withdrawn from the rubber ring to let the rubber ring couple with the object. Thereby assembly labor cost and time may be reduced.

Abstract: Disclosed herein is an apparatus and method for installing a c-clip outside a far end of a passage. In some embodiments, the apparatus comprises prong members each comprising a prong end, a base end, and a lip part. A base is secured to the base ends, so the prong members are parallel with each other, and so the lip parts form a ring-shaped lip adapted to secure the c-clip. A tube is provided comprising an inner surface having a varying radius. The base inserts the prong members through the tube and against the inner surface, the inner surface forcing the c-clip to close into a closed c-clip. The prong ends are moved at least partially through the rear of the tube, and in some embodiments through a tube extension, permitting a restoring force of the c-clip to open the c-clip.

Abstract: An elongate, elastomeric fastener (13, 19) includes a head (13) and barrel section (19). The fastener may be installed into a hole (12) in a panel (11) by stretching by the elastomeric, elongated portion reducing diameter so that it passes through the hole (12) and fastens by releasing the force on the fastener (13, 19) allowing gripping around the hole (12). In yet a further embodiment, a central push-pin (35) may be used to apply an axial force on the fastener which is required to operate the fastener (13, 19).

Abstract: Systems and methods are provided for the placement of ring shaped seal members on mechanical housings. In accordance with a preferred exemplary embodiment of the invention, a tapered insertion tool is placed over a mechanical housing on which a ring-shaped seal member is to be located. The ring-shaped seal member is then placed on the tapered insertion tool. A further insertion device is moved over the tapered insertion tool and an inner tubular portion pushes the ring-shaped seal member body over the tapered insertion tool. An outer tubular portion of the further insertion device advantageously prevents the ring-shaped seal member body from rolling during the insertion process.

Abstract: A rubber ring coupling apparatus for coupling rubber rings with an object includes a ring cartridge and expansion elements. A rubber ring is held in an expansion opening located in the ring cartridge. The expansion elements are disposed into the rubber ring and expanded along expansion slots formed in the ring cartridge. Then the object is inserted into the rubber ring and the expansion elements are withdrawn from the rubber ring to let the rubber ring couple with the object. Thereby assembly labor cost and time may be reduced.

Abstract: A portable tool for fitting a channel-shaped sealing, trimming or guiding strip onto a mounting flange comprises a gear box having an input shaft rotated by suitable motor and which drives two rollers in contra-rotating directions about respective axes. When the motor is energized to contra-rotate the rollers, the tool is driven along the strip and the rollers force the sides of the channel of the strip into tight frictional contact with the flange. The axis of one of the rollers is fixed in relation to the tool body. The other roller is mounted on a sub-frame so that its axis can pivot about a pivot axis which intersects with the rotation axis of that roller. The tool also includes a third roller for engaging the outside of the inverted base of the channel.

Abstract: A method of setting a distance between a first body and a second body in a fuel injector is disclosed. The method includes providing an intermediate body having a first end, a second end and a longitudinal axis, the first end being fixedly connected to the first body and the second end being fixedly connected to the second body. The intermediate body is compressed toward the longitudinal axis. The compression axially elongates the intermediate body, such that the first body is separated from the second body. An apparatus used to set the distance is also disclosed.

Abstract: A process for cutting and removing a portion of an outer sheath having spaced apart insulation covered wires and a core member containing an uncovered ground wire there-between. The sheath is cut by plier jaw members having cutting edges which define en opening configured to the sheath. On closing the sheath is cut circumferentially without significantly cutting the insulation on the wires or the unsheathed ground wire. The cut portion of the sheath is then removed in one continuous process.

Abstract: A simplified tool for removing and inserting a plumbing fixture seal, particularly for use with ball type faucets using a rubber seal engaged by a cylindrical compression spring. The tool comprises an outer housing; an inner member having a tapered end designed to frictionally engage the seal and spring, said member being reciprocally disposed within the outer housing, said inner member being retracted inside the outer housing by a retraction spring; and a means for extending the tapered end of the inner member beyond the end of the outer housing sufficient to engage the seal and spring.

Abstract: A ring installation method and a ring installation jig which are capable of performing an installation operation with high efficiency in which an anti-slip-off ring made of an elastic metal material is uniformly expanded to be fitted on a pin's end and pushed to an engagement position to be mounted thereon. The jig has (i) an expansion guide member which has, at its front, a working face to be brought into contact with an end of a chain-coupling pin for positioning and has a ring expansion guide section on its outer periphery and to which a propulsive force is applied; (ii) an expansion claw fitted on the expansion guide member for expanding and supporting the anti-slip-off ring and moving it to the pin's end; (iii) an elastic body for applying a pressing force to the expansion claw; and (iv) a pusher for pushing the anti-slip-off ring which has been expanded by the expansion claw into an annular space defined by a link of the chain and the pin.