Abstract: An engagement convex portion is formed in a grommet of a two-piece clip, and a head portion-side engagement concave portion is formed in a pin of the two-piece clip. When the pin is pushed into the grommet to a maximum push-in position, an inner end of the engagement convex portion of the grommet abuts against a middle of a tip-side concave portion wall surface of the head portion-side engagement concave portion. Thus, in the maximum push-in position, when a tip portion of the pin is pushed back in an extracting direction, the tip-side concave portion wall surface of the head portion-side engagement concave portion of the pin slides against the inner end of the engagement convex portion of the grommet.

Abstract: According to embodiments of the present invention, a clip includes: a plate spring member having a leg portion and flange portions; a pin member having a shaft portion and a head portion. The leg portion has: inclined portions outwardly extending from a bent portion; engagement portions inwardly extending from the inclined portions; and abutting portions connected between the inclined portions and the flange portions. The shaft portion has: a proximal-side diameter-expanded portion; and a distal-side diameter-reduced portion. When the plate spring member is assembled with the pin member and flange portions abut a front side circumference of the mounting hole, the diameter-expanded portion abut the abutting portions to expand the leg portion through a further pushing operation of the pin member thereby engaging the engagement portions with a back side circumference of the mounting hole.

Abstract: A fastener comprises a pin, made of plastic, having a pin head and a pin shank, and a bushing, made of metal, having a bushing flange and a pair of bushing legs, which pin and bushing are coupled in a non-opened coupled condition with a gap between the pin head and the bushing flange, further comprising latching recesses formed at positions adjacent to the tip ends of the pin shank, together with first latching projections, formed in the bushing legs, for maintaining the non-opened coupled condition, and second latching projections, formed at the tip ends of the bushing legs, for maintaining a opened coupled condition, and the pin shank is formed to a length in the axial dimension wherewith, in the non-opened coupled condition, when the first latching projections are mated with the latching recesses, the tip end thereof does not protrude from the second latching projections of the bushing legs to the tip ends thereof.

Abstract: A hold-down device is provided for securing graphic arts die plates or die to flat bed or rotary chases having a series of generally cylindrical, hold-down device-receiving cavities. The chase cavities have an innermost portion of greater diameter than the outermost portion of the cavity, presenting a downwardly-facing shoulder therebetween. The device, which is adapted to be inserted in one of the cavities, has a pair of opposed, generally semi-circular anchor members. A fulcrum component positioned between the anchor members has a generally circular fulcrum section received in respective, opposed internal grooves in the anchor members. A lock ring that interconnects the ends of the members remote from the fulcrum section, biases those ends toward one another. When the device is installed in a cavity, the ends of the anchor members are forced toward one another to an extent that the device will fit within the outermost portion of the cavity.

Abstract: A motor-installed roller (3) has a roller body (6) with ends closed with fixtures (7), and apertures (30,31) are formed in the roller body and fixtures, respectively. A recess (32) also formed in each fixture (7) extends in axial direction of this fixture so as to communicate with the aperture (31). A hollow pin (9) as the fastener has a solid basal portion (36) and a collapsible foot (35). This foot is deformed by an external force applied to the solid portion in its axial direction, so as to extend along the inner surface of the recess (32) such that the hollow pin (9) is locked in place not to slip off even if subjected to vibration. The solid portion (36) of this pin prevents the roller body (6) from moving relative to the fixture (7), or relative to any closures, bearings or the like easily attached to the roller.

Abstract: A clamp for securing a tool to a multi-piece panel assembly. The clamp is especially suited for applications where access to only one side of the panel assembly is available. The clamp uses a blind temporary fastener that is secured to the panel assembly to hold the independent panels of the assembly together. The clamp includes an sleeve member that is attached to the temporary fastener and a socket that attaches to the sleeve member and is axially adjustable therewith. The clamp attaches to the temporary fastener without modification of the temporary fastener and clamps the tool to the panel assembly. The clamp is adjustable for a variety of tool thicknesses and can be removed without removal of the temporary fastener.

Abstract: An expansion bolt assembly has a bolt, a sleeve and a nut. The bolt has a conical head formed at one end of the bolt and a non-circular recess defined in the other end of the bolt. The recess is adapted for a tool to engage the recess to keep the bolt from rotating. The sleeve is slidably mounted around the bolt. Multiple slits are defined in the sleeve at an end facing the conical head on the bolt. The nut is screwed onto the bolt and abuts the sleeve to push the sleeve relative to the bolt. With such an expansion bolt, the bolt does not move during the installation of the expansion bolt. The expansion bolt can be used with a shallow hole. The scope in which the expansion bolt can be used is enlarged.

Abstract: A locking device is disclosed for interlocking two members having aligned openings extending therethrough. The device includes a hollow cap and a pin with an enlarged head at one end and a nose at the opposite end. The pin is insertable through the aligned openings of the members, with its nose received in interlocked engagement within the cap, and with the two members captured between the cap and the enlarged head of the pin. A frangible portion of the pin is severable in response to relative rotation between its nose and enlarged head to thereby destructively disassemble the locking device.

Abstract: A self-cutting expansion anchor and system having a sleeve member with a plurality of expandable sections disposed about a shaft, the expandable sections having an end portion disposed toward a generally conical portion of the shaft, a heat hardened cutting portion protruding from at least some of the expandable sections of the sleeve member, the hardened cutting portions and the corresponding expandable sections are unitary members, and a threaded sleeve member having a driving end disposed about the threaded shaft toward a driving end of the sleeve.

Abstract: A fastener for temporarily securing together at least one part and a tool includes a body having a longitudinal axis, a part-engaging surface for bearing against the at least one part, and an outer surface that defines a guide bushing. A fastening mechanism projects axially from the body and is adapted to extend through the at least one part for securing the at least one part against the part-engaging surface. The fastener further includes an engaging member on the body and having a tool-engaging surface that is engageable with the tool for securing the tool to the at least one part.

Abstract: An expansion dowel, including an expansion sleeve (2) having a rear section (3) provided with an inner thread (4), an opposite expansion section (5) with a plurality of expansion tabs (6) separated by axial slots, and a stepped bore (9,10) having in, the expansion section (5), a smaller inner diameter (s) than in the rear section (3) and a circumferential annular shoulder (11) formed in a transitional region between the rear and the expansion sections (3,5) and facing substantial toward a rear end of the expansion sleeve (2), and an expansion member (12) provided at a front end of the expansion sleeve (2) projecting beyond the front, the expansion member (12) projecting beyond the front end of the expansion sleeve (2), widening substantially conically in a setting direction (5), and having a length (l) larger than a length (k) of the expansion section (5) of the expansion sleeve (2).