Abstract: A locking nut is provided by forming a straight cylindrical bore through a body, forming a tap with uniform teeth, the tips of which taper at a shallow angle toward one end of the tap, and tapping said bore with said tap so as to produce a thread having a pitch diameter and a root diameter which taper from one of the thread to the other, and a crest which is of constant diameter and increasingly truncated from one end to the other, said thread at said one end having substantially a full profile.

Abstract: A locking nut is provided by forming a straight cylindrical bore through a body, forming a tap with uniform teeth, the tips of which taper at a shallow angle toward one end of the tap, and tapping said bore with said tap so as to produce a thread having a pitch diameter and a root diameter which taper from one of the thread to the other, and a crest which is of constant diameter and increasingly truncated from one end to the other, said thread at said one end having substantially a full profile.

Abstract: A pneumatic impact tool having a special cushioning assembly for cushioning the repeated recoil of a hammer piston and thereby providing substantially reduced tool vibration during use. The cushioning assembly includes an energy-dissipating damping sub-assembly and an energy-storing coil spring sub-assembly arranged in series with each other such that they operate simultaneously, yet independently, to cushion the hammer piston's rearward movement over a wide range of operating speeds.

Abstract: This invention provides a flarable fastener having a sleeve with a bendable wall at one end and a head at the other. A screw has a shank extending through the sleeve and a head overlying one end of the sleeve, with a knurl holding the screw and sleeve together. A nut is received on the outer threaded end of the shank and includes an axial protrusion dimensioned to enter the end of the sleeve upon advancement of the nut, causing the sleeve to be flared outwardly to form a flange for holding it to a workpiece.

Abstract: This invention provides a removal arrangement for a fastener element which includes spaced exterior portions of a first diameter with a frustoconical portion in between, the frustoconical portion tapering from the first portion to a shoulder that connects to the third portion. A resilient retainer ring fits within a groove in a grommet attachable to a workpiece and encircles the fastener element at the first and third surface portions, and is engageable with the shoulder for preventing separation of the fastener element from the retainer ring. In the removal of the fastener element, an expansible member is extended over the fastener to encircle it at the third surface portion, the expansible member presenting an exterior surface substantially that of the first diameter of the fastener, bridging between the first and second surface portions so that said fastener element can be withdrawn from the retainer ring.

Abstract: This invention provides a removal arrangement for a fastener element which includes spaced exterior portions of a first diameter with a frustoconical portion in between, the frustoconical portion tapering from the first portion to a shoulder that connects to the third portion. A resilient retainer ring fits within a groove in a grommet attachable to a workpiece and encircles the fastener element at the first and third surface portions, and is engageable with the shoulder for preventing separation of the fastener element from the retainer ring. In the removal of the fastener element, an expansible member is extended over the fastener to encircle it at the third surface portion, the expansible member presenting an exterior surface substantially that of the first diameter of the fastener, bridging between the first and second surface portions so that said fastener element can be withdrawn from the retainer ring.