Abstract: A dual-purpose arrow shaft insert for pressing into a hollow arrow shaft at either end of the arrow shaft to facilitate the attachment of a nock or arrow point thereto. The insert has an introduction end, a receiving end, and a central cylindrical portion connecting the introduction end to the receiving end. A receiving orifice is formed within the receiving end and extends from the receiving end into the central cylindrical portion of the insert and terminates in a threaded opening which continues farther into the central cylindrical portion toward the introduction end. The receiving orifice is so sized and configured so as to be capable of receiving the shank of a nock. Without any modification, the dual-purpose insert may also receive a point through the receiving orifice. The threaded rod attached to the arrow point is thrust through a shock absorbing sleeve and both are then pressed into the receiving orifice.

Abstract: A knockdown chair for children easily assembled and disassembled, and maintaining a desired connection strength for a long time. The knockdown chair comprises a square seat plate having an insert projection on its side surface, a plurality of support beams engaging with and surrounding the seat plate by reception of individual insert projections of the seat plate and each having a reception slit at its side surface and a pair of reception holes on its opposed ends, a plurality of connection members connecting the support beams to each other at corners of the seat plate and each having three inserts in order to be coupled not only to corresponding neighbor support beams but also to a leg member, and the leg member coupled to the connection member for supporting the seat plate and the support beams. The reception slit and the reception holes of the parts of the chair are preferably provided with elastic soft layers made of a soft synthetic resin material for facilitating assembly and disassembly of the chair.

Abstract: To improve the corrosion protection at the connection site of the sealing cuff and the ball pivot, a ball joint with a sealing cuff (7), made of an elastically deformable material, is proposed, which is connected, with an edge profile (9), to a ball pivot (2) in a positive-locking manner in the direction of rotation around the longitudinal axis of the ball pivot (2) and has an elasticity that compensates for the maximum rotary and swiveling movements of the ball pivot (2) relative to the housing (1).

Abstract: A universal gland defining a central opening for mounting the gland coaxially about a machine shaft to the machine housing, the mounting done with a plurality of bolts at bolt hole positions in the housing. A gland body includes a mounting surface for placement adjacent the housing, and facing away from the mounting surface at least one tab-engaging surface is engaged by tabs for transferring forces from the bolts to the machine via the gland body. Bolt-mounting tabs are configured to extend radially beyond the periphery of the gland body a distance at least to the bolt hole positions of the machine. The tabs are angularly adjustable about the gland body.

Abstract: A sealing structure of a waterproof connector in which a connector housing having a connector housing body assembled with an inner member is coupled with a mating connector housing through a seal ring having a sealing band, comprising: a pair of engageable members each having an L-shaped cross section, which project forwardly from a front end of a side wall of the seal ring such that distal end portions of the engageable members bend in opposite inward directions of the seal ring, respectively; the engageable members each having a front end face such that the front end face is brought into contact with the bottom of a hollow; a contact piece which is provided at a predetermined position of the inner member so as to be brought into pressing contact with the engageable members; and the engageable members being gripped between the bottom of the hollow and the contact piece such that the seal ring is secured.

Abstract: A device is disclosed for sealing the end of a hollow shaft having internal splines extending into a passageway longitudinal through the shaft. The device has a locking member pivotally attached to a sealing member which is sized so as to seal the opening in the shaft to prevent the leakage of oil through the shaft opening. The locking member and sealing member each have splines which are capable of engaging the internal splines of the hollow shaft. A knob member is attached to the locking member and extends from an opposite end of the sealing member to enable the user to manually impart rotational movement to the locking member about a generally longitudinal axis. The locking member may be pivoted between a first position wherein its splines are aligned with those of the sealing member such that the device may be slid longitudinally into the open end of the hollow shaft.

Abstract: A positioning pin of the invention is attached to an engine part for installing a gasket thereon. The positioning pin includes a body having a projection extending outwardly from the engine part. The projection includes at least one large diameter portion, and a small diameter portion about the body. When the gasket is accidentally moved on the engine part to slip out of the positioning pin, the gasket engages the small diameter portion or is blocked by the large diameter portion to prevent accidental disengagement of the gasket from the engine part.

Abstract: A positioning pin of the invention is attached to an engine part for installing a gasket thereon. The positioning pin includes a body, and at least one groove around an upper portion of the body. When the gasket is accidentally moved on the engine part or slips out of the positioning pin, the gasket engages the groove to prevent accidental disengagement of the gasket from the engine part.

Abstract: A two or three piece seal apparatus and method is described for providing a positive seal of threads in extreme temperature ranges up to 2000.degree. F. for at least 20 minutes. A stainless steel compression/retaining nut is utilized in combination with a high temperature alloy ring or diamond-shaped seal to effect sealing of the threads.

Abstract: A seal is held against the end of the sleeve of a driveline yoke by a retainer formed with angularly spaced windows having axially facing edges which snap past and lock behind angularly spaced lugs on the sleeve when the retainer is telescoped onto the sleeve. Release of the retainer is effected by twisting the retainer to cause circumferentially facing side edges of the windows to cam against sloped side surfaces of the lugs and deflect the axially facing edges of the windows outwardly from behind the lugs so as to permit the retainer to be slipped axially off of the sleeve.

Abstract: An improved connector comprises a coupling sleeve, a cylindrical connecting block, and a bellows hose. The coupling sleeve has a base member on its outer surface. The base member has an annular ring and an engaging pin protruding from the base member, the end of which is formed as a wheel-shape disk. The connecting block is provided with a receiving hole, an annular ring, and a peripheral flange.

Abstract: An improved two part detachable shaft device is connected to a rotatable cutting and shredding member of a comminutor. When these detachable shaft devices are mechanically key connected to the rotatable member along the axis of the comminutor on opposite sides thereof, the shafts and rotatable member form an effective unitary rigidly mounted rotor along the axis of the comminutor and perpendicular to the flow of fluid through the comminutor. Each detachable shaft device provides a unique and convenient means whereby a comminutor cutting and shredding member or both or either shaft device may be readily and efficiently removed for repair or replacement. Each of the detachable shaft devices includes a unique bearing sealing arrangement into which each end of the shaft not connected to the rotatable member extends.

Abstract: A device for fixing an object to a support comprises, in a plate forming part of the object, at least one hole for a fixing to pass through. A gasket is applied to the plate at the location of the hole, and a bearing washer is disposed between the gasket and a head of the fixing. An immobilizing device associated with the bearing washer opposes movement of the bearing washer parallel to the plate and to allow movement of the bearing washer perpendicular to the plate. A confinement device associated with the gasket prevents the gasket escaping from the space between the bearing washer and the plate.

Abstract: A jointing device for tents, covers etc., comprises two overlapping flaps interconnected by a series of yokes. The yokes are attached in spaced-apart relationship to one flap and pushed through corresponding through holes in the other flap. A rope-like member is passed through the yoke portions sticking out of the holes, thereby to hold said flaps together. According to the invention, an inflatable tube-shaped element having through holes is passed over the yokes and positioned between the rope-like member and the overlapping flap portions, or between said overlapping flap portions, and adapted, after inflation, to urge said rope-like member against the yokes to seal the joint between the flaps.

Abstract: Joints are provided between the members of a pair of elements, such as a pair of concrete tunnel lining segments which are secured together in compression by a fastening arrangement with a gasket between the end faces of the segments. The gasket has a multiplicity of spaced recesses or apertures to prevent the gasket from creating a surface tension in the end faces when the joint is subjected to compression.

Abstract: A maintenance-free pivot joint is disclosed for mounting a first member of a loader linkage to a second member thereof. The first member is provided with a clevis having a pair of brackets. The pivot joint includes a pivot pin which is pivotally mounted within the second loader linkage member. A first end collar is fixedly secured to one end of the pivot pin of the joint and is slidably mounted to a first one of the pair of brackets. Conversely, a second end collar is slidably mounted on the other end of the pin and fixedly secured to a second of the brackets, but at a preselectable axial position relative to the second member. The positioning of the second end collar at the preselected position allows the joint to accommodate lateral misalignment between the first and second members of the linkage, while maintaining a closely spaced lateral relationship therebetween to eliminate end play and facilitate good sealability.

Abstract: A coupling for securing a handlebar to a bicycle frame, the coupling includes a compression nut and a bowl. An inner thread is formed in an upper end of the compression nut. A sealing ring has an outer thread formed on a lower end. The sealing ring is secured in place by a threaded engagement between the sealing ring and the compression nut when the handlebar standpipe is inserted through the sealing ring into the compression nut.

Abstract: The invention is a close out fitting for installing in a structural element, the structural element having a port extending from a first surface to a second surface thereof, the port countersunk at both ends, and a method of installing the closeout fitting. In detail, the fitting comprises a hollow, tubular sleeve having a flared first end, a flarable second end and internal threads therebetween. The fitting further comprises a plug having a head portion and a shank portion attached to the head portion with the shank portion having external threads.

Abstract: An angularly movable rolling boot, for sealing a universal joint, sealingly encloses a shaft journal with a sleeve which is integrally formed with a wall of the boot. The sleeve is fitted onto the shaft journal under radial pretensioning which increases axially towards a free end of the sleeve.

Abstract: A support in which the electric elements for the monitoring of a tire are corporated is immobilized on a wheel rim by the use of a locking element which includes two sealing lips.

Abstract: A coupling piece for coupling two or more rods or the like, use being made, for connecting the coupling piece to a rod, of a connector rotatably connectable to said coupling piece, the other end of said connector being adapted for coaction with a rod end by means of a threaded connection. The connector is adapted, through a polygonal outer circumferential portion, to coact for rotation with a ring having a corresponding internal polygonal portion and being provided with external engagement surfaces.

Abstract: The waterproof device includes an elastic seal member for covering a joint section rotatably connecting a pair of rods. On both ends of the seal member are provided covering sections for waterproofing the sides of both rods, between which covering sections are located a displacement offsetting section. This displacement offsetting section includes thick and thin strips formed toward both ends in a manner to alternately locate thick and thin strips. The strips are formed on the peripheral surface of the displacement offsetting section at regular intervals.

Abstract: A seal for preventing extremely hot gases from passing between a movable engine ramp and an engine splitter wall in a hypersonic aircraft. The seal moves with the engine ramp, in a direction parallel to the surface of the splitter wall. The seal includes a first flange which makes sliding contact with the outer engine ramp surface and is attached to a flexible sealing portion that fills the gap between the ramp and wall. The sealing portion maintains sliding contact with the wall as the gap changes dimension due to variations in the ramp's temperature. The attachment region can be a concave surface to radiate the seal's heat. In a second embodiment, the seal includes a second flange through which the seal is attached to the cooler side of the engine ramp.

Abstract: A coupling which transfers torque from one shaft to another through a fitting portion of a key and a keyway. Seal members are provided in gaps which are formed between opposite surfaces of the key and keyway and which do not transfer torque, so as to prevent entry of water into the gaps without bearing pressure due to the torque.

Abstract: A motion transmitting remote control assembly (10) for transmitting motion in a curved path by a flexible core element (14) and including a housing means comprising two tubular portions (24, 26). One of the tubular portions (24) is adapted for attachment to a fluid reservoir wall. A flexible conduit (12) is slideably disposed within the second tubular portion (26). The assembly is characterized by including sealing means comprising O-ring means and a conical swivel cover (34). In one embodiment, the conical swivel cover (34) expands in response to fluid contact to prevent fluid flow from the reservoir and about the conduit (12). In a second embodiment, an O-ring (18) expands in response to fluid contact to prevent such fluid flow.

Abstract: This invention provides an improved hinge joint assembly for connecting linkage components on vehicles. The assembly includes a pin having a lubricant chamber therein with appropriate seals provided to prevent loss of lubricant and the entrance of deleterious materials into the pivotal parts of the joint. The pin is attached to one mounting bracket whereby when distortion between the mounting brackets occurs, all the axial loading is taken in the one bracket avoiding damage to the joint and maintaining the integrity of the seals.

Abstract: A protective boot for sealing the free space between the driving and driven parts of a constant velocity universal joint formed of a material which is suitable for injection molding, wherein the boot is formed with a larger outer diameter part mounted on an outer joint member of the joint and attached thereto by a relative thin-walled metal cap which, due to its resilience, is capable of sealingly pressing radial and axial sealing faces provided at the outer diameter part of the boot against an outer circumference and an end face of the outer joint member while securingly embracing them. The boot is formed with a smaller diameter part which is provided with an inwardly directed end facing the outer joint member and resting in sealing engagement against a driving shaft connected to an inner joint member of a universal joint over a defined distance.

Abstract: The interface bracket, which supports a sealing gasket between the lower surface of a base pan and the front face of a sleeve lower wall, is designed so as to extend under the sleeve lower wall so as to overlap and support the lower wall from sagging. The integrity of the sealing relationship is therefore maintained. Provision is also made to automatically cam the sleeve lower wall from a sagged position by the use of a bracket with an angled leading edge.

Abstract: An axial joint arrangement with integrated seal is provided with three successively arranged bearing rings, the upper and lower bearing rings having spherical guiding surfaces which oppose corresponding spherical surfaces of the middle bearing ring. The upper and lower bearing rings are connected and the middle bearing ring slides therebetween. The guiding surface of the lower bearing ring serves to center and guide the middle bearing ring and the guiding surface of the upper bearing ring serves to transmit operating loads to the middle bearing ring. A first sealing disk is attached to the middle bearing ring. One face of the first sealing disk abuts a first sealing surface and the other face abuts an intermediate disk. The intermediate disk is sealingly connected by a bellows to a second sealing disk, which is in turn connected to a second sealing surface.

Abstract: This invention is intended to solve the problem that a valve casing for use in a butterfly valve formed by press working, which is advantageous from the standpoint of productivity, thickness and weight, has such as a serious disadvantage of breakage or deformation and lowering in the sealing performance due to release on aging or the seal ring when the valve is mounted on pipe line and clamped from both sides. From this point of view, a valve casing according to this invention is formed into a double structure composed of an inner shell and an outer shell, the inner shell comprising a cylindrical part defining a bore and seal ring receiving portions formed on both ends with their diameters enlarged larger than the cylindrical part substantially forming an S-shape in cross section, the outer shell defining a space by surrounding a whole outer periphery of the inner shell, and the inner shell and the outer shell being superposed to each other at both end of the valve casing.

Abstract: The invention provides a sealing arrangement for use with a self-retaining anchoring assembly whereby a coaxial cable is mounted within a throughbore in a support member. The sealing arrangement includes an elongate annular seal of flexible resilient material having a first cylindrical end portion which is sealingly fastened to the anchoring assembly, a second cylindrical end portion providing internal wiper means for sealing engagement with the inner cable member, and an intermediate portion tapering from the first to the second cylindrical portion and formed with annular corrugations imparting flexibility to the seal in all directions transverse to its axis.

Abstract: A device for covering an oblong housing opening (3), along which an element (5) extending with one portion of itself into the housing (1) is movable back and forth, which comprises a flexible band (4), which immovably is secured at each end of the housing opening (3). The band is guided via deflecting rollers (6, 7) and guide rollers (8, 9) secured on the element (5), so as to train about the proximate portion of the element (5), which extends within the housing (1). The deflecting rollers (6, 7) and the guide rollers (8, 9) enable a shifting of the element (5) in the longitudinal direction of the housing opening (3) and with respect to the band (4).

Abstract: A safety shear tool for series connection into a string of sucker rod, especially a fiberglass sucker rod, which includes two coacting members connected together to form a swivel means, and to also form a shear means, so that the tool acts as a weak link as well as a swivel means. The tool is series connected into the sucker rod string and preferably located near the bottomhole pump. When the pump malfunctions and causes the tension in the sucker rod string to increase to a value less than but close to the designed breaking strength of the sucker rod string, the members of the tool are released, one from the other, thereby parting the sucker rod at the tool rather than parting the sucker rod structure itself. The tool is easily reassembled for subsequent use downhole in the above described manner. The set tension at which the tool parts the rod from the pump is easily changed.

Abstract: A window seal apparatus capable of transmitting infrared radiation for use under high temperature ultra-high vacuum conditions. The apparatus includes a window clamped between an annular rim of a clamp flange and an annular rim of a sealing flange. The rim of the sealing flange includes an annular sealing knob machined therein having an annular indentation in its upper surface. An annular lead gasket is located between the sealing knob and one side of the window. An annular lead gasket having roughened surfaces is positioned adjacent to the other side of the window and a TEFLON gasket is positioned adjacent to the annular rim of the clamp flange. A constant force means is provided for pushing the clamp flange toward the window and the sealing flange thereby producing a seal therebetween. The window is preferably formed from alkali halide material.

Abstract: This invention relates to a retaining sleeve which is utilized in conjunction with an associated threaded cap to hold a replacement shock absorber within the cylindrical shroud of a vehicular suspension system of the type commonly referred to as a MacPherson strut suspension system. The retaining sleeve includes a hollow cylindrical upper member and a hollow cylindrical lower member. The lower end of the upper member is provided with collet portion having a plurality of radially movable arms. The collet portion has external tapered formed thereon for engagement with internal tapered threads formed on the upper end of the lower member. The relative rotation between the upper and lower members in one direction causes the collet arms to move radially inwardly to securely grip the outer wall of the cylindrical shroud. After a replacement shock absorber is inserted within the cylindrical shroud, the threaded cap can be secured to the upper end of the retaining sleeve.

Abstract: Snap-in tire valve includes rigid base larger than the rim hole opening so that the valve cannot be extruded therethrough. Valve is held in place by spring clip surrounding the valve stem.

Abstract: A protection chamber for temperature-sensitive or moisture-sensitive materials, comprises heat insulated wall elements which are joined in a butt joint. A semielastic sealing compound is disposed in the joint; and an additional sealing compound of a material of greater elasticity is disposed at but outside the joint. A cover profile overlies the additional sealing material and the adjacent edges of the wall elements and is arcuate in the zone of the additional sealing compound but has relatively straight wings that are secured to the wall elements on opposite sides of the additional sealing compound.

Abstract: A slack adjuster assembly for coupling a brake shaft to a power actuator comprising a bushing member fixed to the brake shaft and having an annular flange therearound and having an annular bearing surface next to the flange which carries a series of teeth on a shoulder facing toward the bearing surface, a lever having a hub member journaled on the bearing surface and having a toothed shoulder interengaging with the teeth on the flange when the hub member is moved toward the shoulder, a spring urging the hub member toward the flange to keep the teeth normally engaged, and a pawl carried in one of said members and having lugs engageable with teeth of the opposite member to separate the teeth by compressing the spring and to advance the engagement of the teeth in a direction determined by the direction of rotation of the pawl.

Abstract: A rigid-vane artificial heart pump includes a vane shaft which extends from the gear box into the blood pumping chamber and a torsion seal for hermetically sealing the gear box from the pumping chamber so as to prevent contamination of blood. Check valves are provided to control the blood flow direction and to determine the pump's mode of operation.

Abstract: A lubrication system for the spline connection and generator bearing of a high speed aircraft generator which utilizes a split ring seal and quad o-ring is disclosed. The split ring seal retards lubricant flow so that there is an accumulation in the area of the splined connection which prevents wear of the splines. The retardation also forces oil to a bearing lubrication hole.

Abstract: A system for articulated bogie-type rail vehicles in which the adjacent ends of the car bodies are pivotally and rotatably supported by supporting arms extending beyond their end trusses on a single-part connecting portal jointed by bellows to the car box ends and mounted on a transverse support. The portal is tightly enclosed by a sealing member on its full perimeter and has a spring mounted platform supported with vertical freedom of movement but with minimum play in all other directions on the bogie. This platform is pivotally arranged by at least one centrally located rotation ball race and by the supporting arms. This rotation ball race has three race rings and two rows of balls. Of these three race rings one race ring is kinematically associated with the front car body while another race ring is kinematically associated with the rear car body, and the third race ring is kinematically associated with the transverse support supporting the portal and the platform.

Abstract: An assembly for installing and using a grommet in a panel of composite material for attachment to a substructure, having interposed therebetween a layer of a compressible gasket material, includes a flared grommet with a spacer disposed between the flare and the panel to protect the panel corners in the grommet flaring operation, to distribute the concentrated load imposed on the panel when the grommet end is flared, and to shim the flared end against the substructure to eliminate the imposition of an unsupported load on the panel as a fastener connecting the grommet and substructure is drawn up to secure the panel and substructure together.

Abstract: A brake is disclosed comprising an annular cylindrical braking member with brake shoes respectively on the inside and outside of the braking member which are straddled by a C-shaped caliper member. The caliper member is pivotally and slidably mounted by a composite mounting assembly comprised of a pivot pin and a tubular bracing member received snugly thereon. The pivot pin acts in tension between opposed leg portions of fixed support while the bracing member acts in compression. A sealing pad or cap is disposed at each of the ends of the passageway in the caliper member through which the mounting assembly extends for providing fluid tightness thereat.

Abstract: A pivot joint having an elastomeric sealing member between a pivot pin and a surrounding structure, including means for preventing the sealing member from extruding between the pivot pin and surrounding structure when lubricant is inserted into the joint under pressure.

Abstract: A first member includes a pair of parallel portions disposed on opposite sides of a second member and pivotally interconnected thereto by means of a pivot pin assembly including aligned holes in the parallel portions and the second member. The pivot assembly further includes a bushing received in the hole of the second member and a pin received in the bushing and in first and second collars respectively press fit into the holes in the pair of parallel portions. In a first embodiment the collars respectively act directly against first and second sets of Belleville springs received on the pin at the opposite ends of the bushing. In a second embodiment the collars respectively act against a pair of flat washers to hold the latter against the opposite sides of the second member and against the sets of Belleville washers.

Abstract: A method for bonding a tubular shaft to an end fitting to produce an assembly wherein the shaft and the end fitting are in axial alignment and which is capable of transmitting high torque, said method employing an end fitting provided with a mating section having two concentric cylindrical walls which describe an annular cavity or socket adapted to receive the tubular shaft therein. The high torque carrying capacity of the joint produced in accordance with the invention results from the fact that the shaft is bonded to the mating section of the end fitting on both its interior and exterior surfaces and is in axial alignment with the end fitting. Such axial alignment results from the presence of a resilient sealing ring and an annular shoulder, positioned near the top and base of the inner cylindrical wall of the mating section, which contact the inner surface of the tubular shaft and center the shaft around said wall when the shaft is inserted into the bonding socket of the end fitting.

Abstract: A first member includes a pair of parallel portions disposed on opposite sides of a second member and pivotally interconnected thereto by means of a pivot pin assembly including aligned holes in the parallel portions and the second member. The pivot assembly further includes a bushing received in the hole in the second member and a pin received in the bushing and in the holes in the parallel portions. Received on one end of the pin and welded thereto to form an integral part thereof is a collar while a cap is secured over the other end of the pin by a cap screw. First and second flat washers are respectively received on the pin at the inner ends of the collar and cap and are held against opposite sides of the second member and against first and second pairs of opposed Belleville springs located at the opposite ends of the bushing.

Abstract: A swivel attached to a hermetically sealed device dropped from high altits to suspend the device from a parachute and allow free rotation of the device to prevent twisting and entanglement of the parachute during descent.

Abstract: The invention relates to pin and socket joints for use in the steering and suspension systems of automobiles. The head of the pin is housed in a socket having an aperture through which the pin extends, the aperture being sealed by an annular boot having peripheral portions sealing against the pin and socket respectively.One of the peripheral portions is engaged in a groove in the pin or socket and the said one peripheral portion has interior passageways leading from the interior of the boot to the base of the groove and exterior passageways leading from the base of the groove to the exterior of the boot.These passageways facilitate the rapid escape of grease from the boot during excessive power filling of grease into the joint so that the boot is not disengaged from the groove.

Abstract: A part structure adapted for attachment to a metal base by welding, particularly an ornament for attachment to an automobile body. The part structure or ornament is a metallic, electrically conductive member and has at least one weld stud affixed thereto. A resilient seal surrounds the weld stud and effects a seal around the weld stud and the weld produced thereby during welding.