A device for holding a stud with a radially flange and an axial shank. The holding device comprising a collet including a clamping section and a hollow insertion section defining an insertion axis such that the stud can be inserted via the insertion section to the clamping section. The holding device further comprising a tubular securing sleeve located radially inward of and concentric with the insertion section. A clearance is defined between a bottom end of the securing sleeve and a top end of the clamping section and is adapted to releasably receive the stud flange. A first air flow channel in a first direction is adapted to blow feed the stud into the collet; and a second airflow channel oriented in a second different direction is adapted to maintain the stud shank substantially in line with the insertion axis.

A light module projects multiple light beams onto an installation surface to form multiple light indicia spaced apart in a pattern on the installation surface, with the light indicia identifying installation locations on the installation surface where construction mounts are then installed. Embodiments include systems in which the light module includes a light emitter that projects a source light beam and a diffractor that diffuses the source light beam into the multiple light beams, systems in which the light module is adjustably mounted to and movable with a handheld tool used to install the construction mounts, systems in which the light module is adjustably mounted to a static-use support, and methods of using these systems to install the construction mounts.

Device (10) for manufacturing a component compound by resistance welding, comprises a welding electrode (12) for transmitting an electric current to a joining element (17) and for exerting a joining force onto the joining element (17) along a joining direction (22) in order to establish a connection of the joining element (17) with a structural element by resistance welding; as well as a positioning device (20) for positioning at least one joining element (17) on the axis of the joining direction (22) in order to contact and particularly apply a force to the joining element (17) by means of the welding electrode (12). The positioning device (20) comprises a retention device (30) for exerting a retention force onto the joining element (17), wherein the retention device (30) is movably arranged.

An electrode is provided for the resistance welding of bolts, having an upper part and a lower part which are configured to be connectable together and, in the connected state, jointly provide a cavity, the upper part having an opening for introducing a bolt, and the lower part having a gas connection for a pressurized gas. A valve body, by way of which the opening is closable, is arranged in the cavity. As a result, applied compressed air is prevented from flowing out. Compressed air only emerges when the valve body opens up the opening.

An upper electrode assembly for welding fasteners includes a body that supports an electrode that has an aperture. The aperture is configured to receive a movable pin of a lower electrode assembly arranged opposite the upper electrode assembly. The lower electrode assembly supports a fastener in a welding position. The upper electrode assembly includes a position sensor which includes a position sensor member that is arranged in the body and is configured to cooperate with the pin to detect a fastener welding characteristic.

A bullet trap is disclosed which is formed without intervening sidewalls to enable cross-shooting and the like with reduced risk or ricochet or damage to the bullet trap. Furthermore, the bullet trap can be configured in a variety of ways to eliminate the need for facing plates while providing a removable attachment mechanism, to enable repair on the trap, to reduce bullet adhesion to the trap and to provide improved containment of lead and improved access to the trap.

An apparatus and method for fastening layers of non-ferrous alloys, like aluminum, magnesium and copper utilizes a steel fastener and a spot welding machine. The fastener and metals are stacked and the heat from the welder's electric current softens the lower melting point aluminum allowing the fastener to penetrate the aluminum. A weld zone between the fastener and the various layers creates an internal weld. The fastener has a rough shaft that is coated by the molten weld zone and is hard to withdraw on solidification. Layers of non-conductive materials like plastics and ceramics may also be affixed to a conductive layer using a fastener made from a compatible material that extends through a pilot hole and welds to or penetrates a conductive layer. The fastener may have projections that initially reduce contact area with the stack.

A joining device for connecting a metal member and a resign member with a metal fastener including a penetrating tip comprises: a cylindrical nosepiece; a high frequency electromagnetic induction coil around the nosepiece; an electrode punch for pressing the fastener into the resign member; a electronic chopper for producing a high frequency current; a high frequency power supply for supplying an induction current to the induction coil; a welding power supply for supplying a welding current between the electrode punch and the metal member; a contact detector for sensing when the fastener tip touches the metal member; and a switching unit for automatically switching from the induction current to the welding current when the contact detector senses that the tip has contacted the metal member.

A mounting bolt for a sub-frame is disclosed. A mounting bolt for a sub-frame that is used to engage a sub-frame to a front side member of a vehicle according to one or a plurality of exemplary embodiments of the present invention may include a bolt body that is inserted into a penetration hole of a mounting bracket fixed on the front side member and is joined to the mounting bracket through a first flange that is formed at an upper end circumference thereof, a support body at which a second flange is formed at a lower end circumference to have a hollow space and is disposed on the bolt body, and a joining plate that is interposed between the first flange and the second flange and is welded with a first join protrusion that is formed on an upper surface of the first flange and a second join protrusion that is formed on a lower surface of the second flange by electrical resistance.

A weld nut feeder pin includes a first pin end opposite a second pin end, and a pin body that extends from the first pin end toward the second pin end. The weld nut feeder pin includes a pin fluid conduit defined through the second pin end to extend to the first pin end and through the pin body, and the pin fluid conduit is configured to receive a pressurized fluid. The weld nut feeder pin includes a plurality of outlet conduits defined through the pin body so as to be in communication with the pin fluid conduit. Each of the plurality of outlet conduits is spaced apart about a perimeter of the pin body and extends along an axis. The axis is oblique to a longitudinal axis of the weld nut feeder pin.