Abstract: A welding device, in particular a stud welding device with a stroke compensating arrangement comprises a clamping member cooperating with a dragging sleeve and a conically shaped region of an actuating pin capable of reciprocating in its longitudinal direction. The dragging sleeve at least partially surrounds the clamping member and the region. The clamping member is designed in the form of a hollow cylinder with at least one elastic portion which can be brought to rest radially on the dragging sleeve by the region, and a carrier member is provided on which the clamping member rests in part.

Abstract: An electric welding device for welding a fastening element (4) having a through-duct (17) on a workpiece is proposed. The welding device comprises a conveying and holding system (1) having a guide member (2) with a guide duct (3). The fastening element (4) is supplied to the guide duct and is held in one of its ends during the welding process. Within the guide duct there is arranged a loading member (6) which is capable of moving to and fro in the longitudinal direction thereof and has a head (7) which can be brought to rest on the fastening element (4). The loading member has a duct (9) with an inlet (10) and an outlet (11) formed on the head (7). A gas supply duct (12) opens into the guide duct (3). The loading member (6) closes the gas supply duct (12) in a first position. In a second position, the loading member (6) connects the inlet (11) to the gas supply duct (12) so a gas flows to the welding position during the welding process.

Abstract: The invention relates to a method of welding weld studs to a workpiece, in particular of aluminum in each case, by the stroke ignition method, in which the stroke height(s) of the weld stud (1) is altered as a function of the measured arc voltage and optionally of the arc firing time. In particular, the stroke height(s) of the stud (1) can be increased during the occurrence of short circuits, i.e. during a sudden drop in the arc voltage, preferably in predetermined steps. The weld stud is immersed into a pool of melt after a predetermined period of time of between 5 and 10 ms after the welding current has been switched off. The polarity of the stud or of the workpiece is changed at least once during the welding process. The welding current is interrupted for a predetermined period of time for this purpose. The method leads to an improved, readily reproducible quality of weld.

Abstract: A blind fastener system comprises(a) an outer sleeve (2) comprising a flange (4) at one end, which sleeve (2) is provided with a counterbore (9) at the end adjacent to the flange (4), and a relatively thin wall section (8) which extends from the flange (4) and terminates in an abutment surface (12) and;(b) an inner sleeve (14) having an inner threaded bore (20), which inner sleeve (14) comprises a head portion (16) which terminates in a shoulder (22) and a second portion (18) extending from the head portion (16) towards the operating side (24) of the fastener (10) and having a relatively thin wall (28), which second portion (18) has a shape which matches the shape of the inner bore of the outer sleeve (2).The inner and outer sleeves (2,14) are adapted to be assembled together so that the abutment surface (12) of the outer sleeve (2) abuts against the shoulder (22) of the inner sleeve (14).

Abstract: A press-nut is adapted to engage with the threads of a bolt by pressing the nut onto the bolt to receive the bolt in an insertion hole thereof. The press-nut comprises a plastic nut body, and a plastic tubular cap member adapted to be coupled to the nut body to contain the nut body therein and to provide the press-nut with its external appearance. The cap member has a wide opening at one end so as to receive and contain the nut body and a small hole at the other end, through which the bolt is inserted. The nut body comprises a base portion, at least two screw portions forming a nut as a whole and having threaded grooves on the inner walls thereof, and spring portions extending from the base portion and connected to the respective screw portions with each spring portion resiliently biasing the corresponding screw portion so as to be pressed upward from the base portion.

Abstract: A retaining device for securing insulation to sheet metal has a flange, an articulated structure and a push plate having an aperture therethrough such that when the retainer, except for the flange, is inserted in a hole in the insulation layer it allows a push plate to be pushed towards the flange, causing a pair of locking fingers to pivot and press up against the underside of the insulation in a locked position. The retaining device is then frictionally fitted over a stud member on the sheet metal to which the insulation layer is to be secured.

Abstract: The invention provides a tack gripper for a tack welding gun wherein the tack gripper is U-shaped in design. The tack gripper has two arms connected by a base. At least one arm of the tack gripper is resilient in design. The arms have a bent back portion at their free end. The portion is arranged between the respective arms. The portions contain holes in which the catch knobs formed on the workpiece to be welded can engage.

Abstract: A device-coupled golf club 80 includes a club head 64 which is assembled with a shaft 22 by use of a coupling device 40. Club head 64 is formed with a hosel 68 which is formed with a bore 70 having threads 76 formed in an upper portion thereof and a floor 74 at the base thereof. Coupling device 40 is formed with a body 41 having a bore 42 formed axially therethrough. A flange 44 is formed radially outwardly from one end of the body 41 and is formed with threads 50 from the flange toward the opposite axial end of the body. A ferrule 56 is located on shaft 22 and a tip end 30 of the shaft is inserted into bore 42 of body 41 and secured there by an epoxy glue 82. An exterior surface of body 41 is formed with threads 50 which engage threads 76 formed within bore 70 of hosel 68 to removably secure device 40 with head 64 whereby shaft 22 is assembled with the head 64 to form club 80.

Abstract: The invention relates to a process for the application of components strung together in the manner of a belt onto workpieces in which the components are intermittently brought successively into a separating position for a respective component. The component halted in the separating position is initially grasped by a spatially movable jointing tool brought to the separating position over a free path, the jointing tool being held in its position defined by the halted component, the grasped component then severed from the subsequent component and is finally transferred by the jointing tool into the respectively desired jointing position remote from the separating position, in which the component is fastened on the workpiece, for example by electric arc welding.

Abstract: A fastener grommet assembly of soft or flexible plastic material which forms a non-porous "bathtub" enclosure that fits into an aperture in the body panel part of the automobile. A depending lug from an interior part of the automobile is provided with a metal retainer member that forms a pliable prong that can be pushed into a snap-fit relationship with the flexible grommet member and thus cause opposing wall portions of the grommet to expand into a seal-tight engagement with the rim of the aperture of the exterior body panel part of the automobile.

Abstract: A separator/feeder 16 in which a chute 18 stores a plurality of headed fasteners 4 in line and feeds them one by one to a shuttle 20 having a storage cavity. A piston-cylinder device 24 reciprocates the shuttle between a first position in which the headed fasteners are singly received in the storage cavity and a second position in which they are conveyed, shanks foremost, to a discharge port and hence a discharge tube 25 connected thereto. A rotatable disk 27 provided in the housing 22 transmits the headed fasteners into an upside-down position in the storage cavity of the slidable shuttle. A rack 32 and a pinion 30 function to link the rotation of the disk with the reciprocating movement of the shuttle so that the headed fasteners can be received from a pocket 28 in the disk when the storage cavity of the shuttle is in the first position and can be received from the chute 18 into the disk pocket when the storage cavity of the shuttle is in the second position.

Abstract: A fastener assembly for fastening an interior panel to an exterior or body panel of an automobile comprising a grommet of plastic material that forms a non-porous seamless bathtub-like enclosure surrounding a metal clip retainer member which is secured within the interior thereof; the retainer-grommet is designed to snap-fit into a hole in the body panel of an automobile. A depending lug or prong from the interior panel of the automobile is provided with an enlarged tip that cooperates with the metal clip retainer so that the prong can be pushed into a snap-fit relationship with the metal clip member within the sealed enclosure of the grommet or by pulling can be removed therefrom.

Abstract: An integral strap assembly comprising a pair of end fasteners molded onto the ends of a nylon cable. The cable is made up of a round bundle of small individual extruded nylon strands enclosed in a sheath of braided nylon. The strap assembly is preferably used to check the motion of automobile glove box doors, station wagon tailgates, and the like.

Abstract: A clip for providing end to end connection between a rigid and a flexible hydraulic pipe comprises a base by which it may be attached to a workpiece, a frame portion extending upwardly from the base having a circular bore, which can receive a rigid pipe as a force fit, and a hexagonal bore which may receive a flexible pipe and hold it against twisting and clamp means on the base to embrace the flexible pipe and hold it in position.

Abstract: A blind rivet nut with a pulling mandrel, having a flanged rivet tube with an internal thread has the pulling mandrel in the form of a cap screw, the cap being used to engage a setting tool. The cap screw is a self-tapping screw.

Abstract: A stud welding gun 1 has a collet 4 to hold a stud, a piston to push a stud out to the collet, and a feed pipe to automatically feed studs one by one. A stud receiving member 15 to receive and store studs is provided between the collet and the stud feed pipe and the stud receiving member is provided with at least two stud receivers 16. Each stud receiver is capable of moving between a first position in which it receives a stud and a second position which continues to the collet and in which a stud pushed out by the piston is held by the collet, and when a stud receiver 16 is in the second position, another stud receiver is in the first position. By this, the receiving of a stud is carried out simultaneously with the loading of a stud to reduce the working time.

Abstract: The invention relates to a process for the electric welding of two weld parts by the flow of electric current through a welding point and the use of fluid such as an inert or protective gas to inhibit or prevent or eliminate oxidation at the welding point. The fluid is supplied through a continuous bore in one weld part and is directed toward the welding point, so that the fluid sweeps over the welding point radially from the bore. The fluid may be an inert gas such as argon or nitrogen, optionally mixed with carbon dioxide; alternatively the fluid may be aqueous liquid, the water being vaporized in the region of the welding point.

Abstract: A rivet setting tool for use with double headed blind rivets comprises a collet assembly adapted to engage a pulling head of the rivet, and abutment members movable between an open position, in which the pulling head of the mandrel of the rivet may be passed through the abutment assembly to be engaged by the collet assembly, and a closed position in which the abutment members provide an abutment to engage the rivet head. The abutment members are mounted for generally axial movement and when a double headed blind rivet is presented axially to the tool, the head of the rivet engages the abutment members, and on the rivet being pushed into the tool so that the pulling head is engaged by the collet assembly, the abutment members are moved axially and are caused to close firmly about the mandrel.

Abstract: A masonry screw anchor having two different constant diameter shank portions connected via a taper. Each portion has a set of constant diameter threads and intermediate smaller diameter protrusions with the threads and protrusions on the larger diameter shank portion being larger in diameter than the diameter of the threads and protrusions on the smaller diameter portion.