Abstract: A rapid assembly structure includes an upright post, wherein the upright post includes a first upright post and a second upright post; the rapid assembly structure further includes a sleeve assembly, wherein the sleeve assembly includes a first sleeve base and a second sleeve base, the first sleeve base is configured to install the first upright post in a fitting manner, the second sleeve base is configured to install the second upright post in a fitting manner and the first upright post is connected to the second upright post by the fit of the first sleeve base and the second sleeve base; after the first sleeve base is in docking fit with the second sleeve base, a partial side wall in the first sleeve base extends outwards and is in close fit with an inner cavity wall of the first upright post.

Abstract: A method for permanently fastening a cam on a cam carrier may involve positioning the cam on the cam carrier in a predefined axial and angular position. By way of the positioning, an end face of the cam carrier is aligned with an end face of the cam. The method may also involve positioning a cam segment formed by the cam carrier and the cam in an assembly device. The cam carrier may then be deformed such that the cam is secured at least in a form-fitting or force-fitting manner against movement in an axial direction on the cam carrier. A deformation tool of the assembly device may be advanced in an axial direction onto the end face of the cam carrier, and the cam carrier may be deformed such that material of the cam carrier is forced outward in a radial direction against the cam.

Abstract: The invention relates to an aerial work platform including: a frame (1) mounted on wheels (4, 5); a work platform (3) mounted on a lifting mechanism (2); two side bars (10) arranged under the frame and movable relative to said frame between: either a raised position, and/or a lowered position in which said bars extend past the frame toward the ground; and an actuator (30) assigned solely to actuating the two bars to move said bars between these two positions, the actuator having two opposite ends by means of which said actuator moves the two bars by varying the distance between the two ends. The actuator moves each of the two bars by means of another of the two ends and is maintained only by the two ends. This actuation device is particularly simple, compact, and cost effective.

Abstract: A joint exhibits high tensile strength. The joint includes a solid rod having a slit or opening into which a wedge is inserted. The rod and wedge are inserted into a fitting. The internal surface of the fitting has a contour which continuously and nonlinearly varies with distance along the fitting. The wedge has a dimension having a similar contour. The shape of the contour can be described by a polynomial of order two or higher. The joint can be used to construct a sucker rod for an oil well, or it can be used in other applications. The joint can support high tensile loads, over long distances, while occupying a very narrow tubing bore.

Abstract: A bearing assembly for a motor vehicle drive train includes rolling elements, an outer race supporting the rolling elements, and an inner race rotatably supported by the rolling elements. The inner race includes a radially inner surface having a plurality of axially extending splines. The radially inner surface includes a primary chip groove formed therein that is defined by a primary cutting edge for spline cutting a mating shaft inserted into the radially inner surface. The radially inner surface further includes a secondary chip groove formed therein axially offset from the primary chip groove that is defined by a second cutting edge for spline cutting the shaft inserted into the radially inner surface.

Abstract: A glueless shaft joining system, apparatus and method are disclosed. A base insertable into the hollow interior of the shaft can include a plurality of flexible fingers separated by a slot defined between each of the adjacent flexible fingers. The interior of the base is hollow and includes a threaded portion adjacent to the distal end that extends inwards in a proximal direction. A set screw can be inserted into the threaded portion of the hollow interior of the base. The set screw includes a threaded head portion and a non-threaded tail portion that diverges as it extends away from the head portion. The tail portion deflects the flexible fingers laterally outwardly as the set screw is advanced in the proximal direction through the base. A component, such as a broad head or arrow nock can be coupled to the insert as desired.

Abstract: A shaft, such as a camshaft for use in the internal combustion engine of a motor vehicle, in which the shaft includes a basic shaft body, a plurality of functional bodies, such as cams, mounted in axially spaced positions on the basic shaft body, and at least one balancing element mounted on the basic shaft body, in which the at least one balancing element is produced separately from the basic shaft body and from the functional bodies, and the functional bodies and the at least one balancing element are subsequently mounted on said basic shaft body, for example, by axial press fitting.

Abstract: A method and apparatus for securing a conduit to relatively inaccessible structures, for example, oil tanks on submerged ships. The method involves providing a conduit with a neck, temporarily securing the conduit to the surface, for example by means of magnets, etc, drilling a hole through the structure and passing the neck of the conduit through the hole in the structure, and passing an expander device through the neck of the conduit through the hole in the structure to widen a portion of the internal passage of the conduit in the region of the neck.

Abstract: A method of manufacturing a disk drive, the method including providing a disk and a motor hub, the disk defining an opening, the opening having a pre-swaged inner diameter, and the motor hub defining a swage ring having a pre-swaged outer diameter. The method further including positioning the disk such that at least a portion of the swage ring extends into the opening, and swaging the swage ring radially outwards into contact with the disk.

Abstract: A dual bushing installation kit includes a first metal bushing and a second metal bushing. The first metal bushing can include a first body having first and second ends. The first and second ends are connected by a first outer surface having a first outer circumference and a first inner surface having a first inner circumference. The second metal bushing is defined by a second body having first and second ends. The first and second ends are connected by a second outer surface having a second outer circumference and a second inner surface having a second inner circumference. The second outer circumference is dimensioned to be substantially conforming with the first inner circumference such that the second bushing is closely receivable by a first opening of the first bushing. Both the second outer circumference and the first inner circumference can be expanded in an outwardly radial direction.

Abstract: A cushion material fastening structure includes: an interior trim part, made of synthetic resin, that is provided with an opening and an elastic deformation portion at least part of which projects inward in the opening; and a cushion material, having a sheet shape, that is caught by the elastic deformation portion by being plunged into the opening while elastically deforming the elastic deformation portion, whereby the cushion material is fastened to the interior trim part.

Abstract: An electrical feedthrough assembly for providing connection to components of a compressor. The electrical feedthrough assembly includes a housing having an inner surface defining a channel. A sealed wire assembly is provided in the channel. The sealed wire assembly includes a body having an outer surface defining a groove and a plurality of wires sealingly passing through the body. An o-ring fits in the groove to provide a hermetic seal between the body and the inner surface of the housing.

Abstract: An assembly method for a downhole screen is disclosed. In the preferred embodiment, the filtration layer is slipped over a perforated base pipe and an expansion technique is used to increase the base pipe diameter to the point where, preferably, an interference fit exists. The expansion can be fully underneath the filtration layer or can be done in discrete zones. The finished assembly can still be expanded further downhole, such as, for example, in open hole completions. An outer protective shroud can be employed over the filtration layer when the expansion of the base pipe occurs.

Abstract: Methods and apparatus for making a connection that can be rotationally locked by expansion are disclosed. Threaded tubular ends include a slot cut across a thread at a location along the circumference of the thread. Threading two tubular members that have the slot disposed in either or both of a pin or box end of the tubular members establishes the connection. The slots represent no impediment to the make-up or break-out of a box by pin connection prior to expansion. During expansion of the connection, the threads of either the box or pin end are forced via plastic flow into the slot in the corresponding thread. This results in locking the connection and preventing relative rotation between the two tubular members, which could otherwise loosen the connection.

Abstract: An expandable coupling arrangement for coupling first and second tubulars includes a male thread portion on an end of the first tubular and a female thread portion on an end of the second tubular. The thread portions comprise dovetail threads having flanks, roots and crests, wherein the flanks are inclined at an angle of greater than 10°.

Abstract: The invention relates to an assembly comprising a door leaf (1), which has at least two undercut blind holes (26), and comprising at least two hinges (3) each consisting of a door-side and a wall-side hinge part (4,5). In order to fasten the door-side and/or wall-side hinge part, expanding plugs (20) are provided that have a distal expanding element (22) as well as a retaining and stop element (23). In addition, an expanding/fastening element (21) is provided that serves to expand the expanding elements and to fasten the hinge to the expanding plug. The expanding/fastening element can comprise a screw bolt (26) and a nut (28) or a mounting part (30) with a hole for accommodating a screw (31), with which the mounting part is screwed to the expanding plug. The invention also relates to a shower stall having one or more lateral walls and one or more assemblies of the aforementioned type.

Abstract: An insert configured to be received or formed in a glass plate to allow, in cooperation with a connecting element, the glass plate to be mounted on a support. The insert is designed to be received in a hole made in one face of the plate, the hole being bounded by a retaining side wall of curved profile directed toward the inside. The insert includes a fastening mechanism complementary to a mechanism carried by the connecting element for connecting the plate to the support.

Abstract: A joint structure is for joining a pair of connecting members to each other. One of the connecting members has a lock portion formed so as to protrude from the member, and the other connecting member is provided with a receiving portion into which the lock portion is insertable. The lock portion is inserted into the receiving portion while at least one of the lock and receiving portions is being resiliently flexed. Thereafter, the lock or receiving portion is restored to its initial shape. As a result, the lock and receiving portions are joined to each other. The lock and receiving portions are abutted against each other such that at least one of the lock and receiving portions deforms the other into engagement with one another. As a result, this deformation limits relative movement between the lock and receiving portions.

Abstract: A camshaft assembly 16 is disclosed for an engine 10, along with a method of producing the camshaft 16. The camshaft includes a support shaft 22 that carries in the region of one end 26 a camshaft element. The camshaft element may comprise a rotation sensor target member 24 and the support shaft 22 is preferably a tubular shaft. The camshaft element 24 is captured onto the support shaft 22 by deforming a deformation zone 46 at the end of the support shaft 22 into a radially extending rivet head 28.

Abstract: A connecting means adapted to fix or release a first element (4) and a second element (5) includes a locking pin (1) which is moveable to remote activation means between a locked position. In which leg (8) expends wall (9) into recess (10), and an unlocked position. The remote activation means may be magnetic, electro-magnetic or any other suitable means. A method of fixing or releasing first and second elements by remote activation means is also disclosed. The invention further provides a first element having first means (166) adapted to cooperate with second means (165) on a second element to facilitate connection of the first and second elements. A method of manufacturing the first element includes the steps of depositing discrete amounts of setable material on a surface of the first element and inverting the element to permit the material to set under the influence of gravity. A method of reducing the spacing between first and second elements by remote activation means is also disclosed.

Abstract: A tubing connection arrangement that includes two expandable tubing sections is disclosed. In one embodiment, each of the tubing sections includes a filter screen sandwiched between inner expandable tubing and outer expandable tubing. On expansion of the tubing sections, the outer tubing provides resistance to radial expansion of the inner tubing in order to ensure that the integrity between the tubing sections is maintained. The filter screen of one of the tubing sections overlaps the filter screen of the other tubing section, and the outer expandable tubing of at least one of the tubing sections extends over the overlapping filter screens.

Abstract: An orthopedic component comprising a first element and a second element, with the first element and the second element being secured to one another with a modular connection, wherein the modular connection comprises a taper junction and an engaged-fit junction.

Abstract: A jigging device, for example, for positioning parts to facilitate assembly line procedures. The jigging device maintains a first element (10) in a desired spatial relationship with a second element (12). The jigging device has a first fastening means comprising fastener (20) which is connected to the first element (10). The jigging device also has a second fastening means comprising fastener insert (14) together with adjustable capsule (18). Locking pin (22) locks fastener (20) to the adjustable capsule (18).

Abstract: A shift lever apparatus is provided in which, after a slider has been assembled at a case, a link is assembled to the case while an intrusion shaft is inserted into a hole. For assembly of the link to the case, an assembly pawl provided at the link is resiliently deformed and inserted at an assembly portion which is provided at into the case. The assembly pawl includes an engaging protrusion that is engaged with a surrounding area of the assembly portion by resilient force of the assembly pawl. A blocking member is pre-positioned to interfere with the assembly pawl when the engaging protrusion is engaged with the surrounding area to block release of the assembly pawl.

Abstract: In a connection between an inner casing tube of a steering column of a motor vehicle and a sleeve-shaped holder, an adjusting device for the casing tube is fastened and engages around the casing tube in an encircling manner and is fixed thereon in a form-fitting manner. In order to hold the holder on the casing tube in a secure and positionally correct manner counter to high axial forces and torques using the simplest arrangement possible, the casing tube has at least two axially spaced apart, radially protruding stops against which, on a mutually facing side, the holder bears with a respective stop edge, and the casing tube has at least one form-fitting element which interacts in a latching manner in the circumferential direction with a mating form-fitting element arranged on the holder.

Abstract: A mechanical fastener assembly having a first member and an insert. The first member includes a cavity into which the insert is forced. The insert includes a body portion having a non-circular cross section defined by a plurality of arcuate sections. Forcing the insert into the first member, which may be a tubular member, firmly engages the insert with the first member. The first member is securable to a second member by positioning a portion of the first member within an opening in a second member. The opening in the second member may be configured to correspond to the cross sectional shape of the body portion of the insert. The body portion of the insert outwardly deforms the first member into engagement with the second member to thereby secure the assembly and prevent the relative axial and rotational movement between the insert, first member and second member.

Abstract: A tubing connection arrangement that includes two expandable tubing sections is disclosed. In one embodiment, each of the tubing sections includes a filter screen sandwiched between inner expandable tubing and outer expandable tubing. On expansion of the tubing sections, the outer tubing provides resistance to radial expansion of the inner tubing in order to ensure that the integrity between the tubing sections is maintained. The filter screen of one of the tubing sections overlaps the filter screen of the other tubing section, and the outer expandable tubing of at least one of the tubing sections extends over the overlapping filter screens.

Abstract: A tubing connection arrangement (10) comprises two expandable tubing sections (12, 14), each tubing section comprising a filter screen (16, 18) sandwiched between inner expandable tubing (20, 22) and outer expandable tubing (24, 26). The filter screen of one tubing section overlaps the filter screen of the other tubing section and the outer expandable tubing of at least one of the tubing sections extends over the overlapping filter screens. On expansion of the tubing sections, the overlapping filter screens, restrained by the outer tubing, ensure the integrity of the filter between the tubing sections.

Abstract: An assembly of parts is prepared by providing a female part having a recess and a male part having an inserted surface received within the recess. A relief pattern such as knurling is formed on the inserted surface. The inserted surface of the male part is inserted into the recess of the female part with a contacting-channeled fit between the inserted surface and the recess surface, so that the knurl serves to align the inserted surface within the recess. The inserted surface of the male part is brazed or otherwise joined to the recess of the female part.

Abstract: The invention is directed to a furniture fitting that is detachably fastened to a furniture part. The fitting comprises a fitting body removably mounted on the furniture part, an expansion sleeve insertible into an opening arranged in the furniture part, and an expansion portion for the expansion sleeve and passing through the fitting body. A peg or bolt is provided for connecting the expansion portion to the expansion sleeve. The expansion portion has a body preferably tapered, at one end, and is articulated, at the opposite end, to a tiltable clamping lever supported by the fitting body. The fitting body includes projections directed towards the expansion portion. The expansion portion abuts a shoulder of each projection.

Abstract: A swaging device for connecting suspension assemblies to an actuator block of a disc drive. The swaging device includes an expandable member which is designed for insertion into channels of tubular stakes coupled to suspension assemblies to swage the tubular stakes relative to a hole of an actuator arm. The expandable member is expandable between an insertion dimension and a swaging dimension. In the insertion dimension, the expandable member is sized for insertion into the channels of the tubular stakes. The expandable member is inserted into stake channels and is expanded to the swaging dimension to impart a swaging force to connect tubular stakes to actuator arms.

Abstract: A device for detaching a suspension assembly, adapted to support a head, staked to an actuator arm of an actuator block of a disc drive. The device includes an expandable device operable between an insertion dimension and a deswaging dimension having a flanged end defining a deswaging surface for forcing the stake from a hole of the actuator arm. In the insertion dimension, the device being sized for insertion through channels of tubular stakes for placement relative to an extended end of the stake. The device being expanded to the deswaging dimension, so that the deswaging surface of the flanged end aligns with an end surface of the stake for removing the stake from the actuator block.

Abstract: A linkage assembly is used to vertically adjust the position of a seat. The linkage assembly includes a first link that is connected to a second link without the use of fasteners. The first link has a first mounting portion and the second link has a second mounting portion. The first mounting portion is deformed into engagement with the second mounting portion to rotatably connect the first link to the second link. In one embodiment, the first mounting portion is an extrusion that extends through an aperture in the second link. An end of the extrusion is deformed into engagement with the second link to form a lip to lock the first link to the second link and allow relative rotational movement between the first and second links while eliminating relative linear movement therebetween. In an alternative embodiment, portions of the first and second links are deformed into locking engagement.

Abstract: A post attachment including an anchor receptacle (20) mounted in the ground. A post (30) is attached to the anchor receptacle by a removable locking bar (40) which engages a slot (34) in the post and a groove (28) in the anchor receptacle. A first tool (12) is utilized which straightens the locking bar for attachment of the post to the anchor receptacle. A second tool (14) is utilized which bends the locking bar for disengagement from the post slot and anchor receptacle groove so that the post may be removed from the anchor receptacle.

Abstract: A method of forming a formlocking connection of two telescopic tubes and including providing in one of the two tubes at two diametrically opposite locations, elongate cut-outs, with the cut-outs having their respective end sides limited by at least one web, providing in another one of the two tubes, at two diametrically opposite locations, longitudinally extending strips extending from an end surface of the another one of the two tubes, inserting into the elongate cut-outs of the one of the two tubes, a forming tool, and thereafter, telescopically connecting the two tubes and pushing the two tubes toward each other so that the strips are pressed against the forming tool which causes the strips to roll over the webs, and a formlocking connection obtained by this method.

Abstract: A system for reinforcing a sandwich panel, the panel having a first exterior skin, an intermediate skin and a second exterior skin, the skins being separated by first and second cores and having a hole bored therethrough of diameter A, the holes in the first and second exterior skins being enlarged to a diameter B, the system including a first tubular sleeve that is insertable into the hole in the first exterior skin and being of a length substantially equal to the spacing between the first exterior skin and the intermediate skin, a second tubular sleeve that is insertable into the hole in the second exterior skin and being a length substantially equal to the spacing between the second exterior skin and the intermediate skin, the first and second sleeves each having a diameter greater than A and slightly less than B, a bolt insertable through the tubular sleeves, the bolt having a head that contacts the exterior surface of the first exterior skin, first and second flare washers positioned on the bolt, one eng

Abstract: A pivot device for use with a notebook computer has a keyed washer and an axle corresponding to the keyed washer. The keyed washer has a keyed opening defined therein and a plurality of keys formed on an inner periphery defining the keyed opening. The axle has a plurality of slots defined in an end thereof, such that when the axle is inserted into the keyed washer, the keys will be forced into one of the corresponding slots and thus a secure connection between the axle and the keyed washer is achieved.

Abstract: A hand-held striking tool has a striking head having an eye passage of generally rectangular cross section a portion adjacent one end thereof enlarged along one transverse axis. Seated in the eye passage is an elongated handle with a metallic core rod of generally I-shaped cross section with a longitudinally extending notch in the web portion at one end providing a bifurcated end portion which has its legs inclined outwardly to a transverse dimension greater than that of the other end of the eye passage. A sleeve of synthetic resin is provided about the core rod adjacent the head and extends over a portion of the length of the eye passage. Synthetic resin fills the eye passage about the core rod.

Abstract: A magnetic disk cartridge has a first cassette shell half provided with engagement holes and a second cassette shell half provided with engagement pins. Each engagement hole has an entrance portion enabling insertion of an engagement pin and a shoulder-like engagement portion following the entrance portion. Each engagement pin has an elastic structure enabling it to be compressed and is formed at its tip portion with a bulged portion. The bulged portion is formed at its distal end with a tapered portion and at its proximal end with a sloped provisional retaining surface. The first and second cassette shell halves are formed on inner surfaces thereof with abutting surfaces. The cassette shell halves are provisionally assembled in the final assembly step by bringing the sloped provisional retaining surface of the bulged portion of the engagement pin engaged with the engagement hole into engagement with the shoulder-like engagement portion and bringing the abutting surfaces into abutment with each other.

Abstract: A vehicle frame having a side/cross member joint, including a pair of side members each having at least one opening therethrough, the openings having a plurality of generally straight edge portions. A cross member is connected to the side members, wherein the one cross member is disposed in the openings in the side members. The cross member is deformed radially outwardly such that an outer surface of the cross member is formed with a pair of grooves having radially extending walls on opposite sides of each of the openings in the side member. A plurality of flat and semi-circular portions are formed in the cross member corresponding with the straight edge portions and the semi-circular edge portions of the openings.

Abstract: A nock that mounts to an arrow shaft. The nock is designed of a light weight plastic material. It incorporates the use of a mechanical locking mechanism to secure it to the end of an arrow shaft. The portion of the nock that is inserted into the arrow shaft, or the insert end of the nock, is expanded by a small set screw located inside a cavity in the insert end of the nock. This expansion of the nock presses against the inside walls of the arrow consequently locking the nock in place. The nock is designed to mount securely to the arrow shaft without the use of adhesives or glue.

Abstract: One of cassette shell halves has a cylindrical body protruding toward the other cassette shell half. The cylindrical body has a rivet press-fit hole and is constituted of elastic engagement pieces. The other cassette shell half has an opening for rivet insertion formed in an outer surface, and an engagement piece receiving hole, which communicates from the opening for rivet insertion to the inner surface of the other cassette shell half and has a tapered inner wall surface having the diameter increasing from an end, that stands facing the one cassette shell half, toward the opening for rivet insertion. When the elastic engagement pieces have been inserted into the engagement piece receiving hole, the elastic engagement pieces are brought into pressure contact with the tapered surface of the engagement piece receiving hole by a rivet, which is press-fitted through the opening for rivet insertion and into the rivet press-fit hole, and the cassette shell halves are thus temporarily assembled to each other.

Abstract: A table-turning driving apparatus comprises a pair of first and second worm shafts 16 and 17 which engage a driving shaft through gears and which is rotated in the same direction of rotation as that of the driving shaft. One 16 of the worm shafts is fixed, at the end thereof directed to the driving shaft, to a gear 28 by means of a fastening and connecting member 29, 30 so that the phase thereof is adjustable relative to the gear 28, and pinions 34, 40 integral with worm wheels 33, 39 which engage worms 32, 38 of the above-mentioned worm shafts 16, 17 are connected to a ring gear 65 of the table.

Abstract: A friction clutch having tangential leaf springs which are fastened by means of blind hole rivets, on one hand to the pressure plate, and on the other hand to the clutch housing, whereby the blind hole in the pressure plate is conical.

Abstract: A method of forming a tube joint which can be used in a desalination plant includes providing a fluted tube, applying a sealant to the tube end and inserting the tube end into a tube sheet or plate to form a joint therebetween. After insertion, the inner surface of the fluted tube is worked to deform external ridges of the fluted tube and uniformly distribute the sealant throughout the joint area. The fluted tube is deformed using a roll expanding method. The fluted design of the tube retains sealant in the joint area during tube insertion and expansion and takes advantage of the heat transfer characteristic of the flutes to provide an improved joint construction especially adapted for heat exchange use.

Abstract: A connecting assembly for fixing the tubular stem/stud of a portable lamp to the base of the same comprising a tube having a butting shoulder to abut upon the upper end of a top hole in the base of a portable lamp, and folding tabs at the lower end of the tube which are folded outwardly to fix the tube tight to the base. As the tube is expanded during a folding procedure, a tight fit is realized. The top hole in the base may include one or two recessed tubular portions to facilitate assembly and ensure rigidity of the assembly.

Abstract: A method of forming a tube joint which can be used in a desalination plant includes providing a fluted tube, applying a sealant to the tube end and inserting the tube end into a tube sheet or plate to form a joint therebetween. After insertion, the inner surface of the fluted tube is worked to deform external ridges of the fluted tube and uniformly distribute the sealant throughout the joint area. The fluted tube is deformed using a roll expanding method. The fluted design of the tube retains sealant in the joint area during tube insertion and expansion and takes advantage of the heat transfer characteristic of the flutes to provide an improved joint construction especially adapted for heat exchange use.

Abstract: A connector includes a connector housing and at least one metal terminal. The connector housing has at least one terminal accommodating hole for receiving the metal terminals, a primary locking device for elastically engaging with the metal terminals, at least one fallout preventing protrusion formed on the wall of the terminal accommodating holes, and at least one window for inserting a jig. The metal terminal includes a secondary locking device extended from the metal terminal, confronting with the window when the metal terminal is locked by the primary locking device while avoiding interference with the fallout preventing protrusion. The secondary locking device is adopted to be deformed by a jig inserted into the window to engage with the fallout preventing protrusion.

Abstract: The invention relates to a design element having an aperture. To connect the design element to a hollow shaft it is slid onto the hollow shaft which is hydraulically expanded and thereby plastically deformed. The plastic deformation of the hollow shaft causes permanent elastic pretension in a surface layer of the aperture of the design element. The surface layer of the aperture has a thickness of several Angstrom units and is connectable to the hollow shaft in a material-locking manner.

Abstract: A method of joining a frame tube to a lug, including steps of making through holes on the lug, squeezing a first elastomer to deform the frame tube causing a plurality of outward projections raised from the frame tube and engaging the through holes, then inserting a reinforcing tube into the frame tube after removal of the first elastomer and then squeezing a second elastomer to deform the reinforcing tube causing a plurality of outward projections raised from the reinforcing tube to engage the inside wall of the frame tube.