Abstract: An anvil for an impact mechanism, where the anvil includes wings that taper at a taper angle of about 5 degrees to about 30 degrees. The anvil may also include a shaft extending from the wings, and a drive end adapted to transfer and apply torque to a work piece. The wings of the anvil also include wing impact surfaces that receive rotational impact forces from a hammer. For example, the hammer contacts and applies torque to the wings of the anvil.

Abstract: A battery-powered driver tool has a tool housing with a socket-type coupler which receives a plug-type coupler of a battery pack in any of four different rotational orientations. Four keys on the battery pack are received in four keyways on the tool housing for non-rotatable engagement, the parts being retained by a split snap ring on the battery pack which cams past four cam shoulders on the tool housing, so that the parts automatically snap-engage and disengage in response to a simple push-pull motion. The battery pack includes a plurality of battery cells connected in series between positive and negative terminals which are designed to respectively engage positive and negative terminals on the tool housing in any of the four rotational orientations of the battery pack. The battery pack has a flat base surface, the parts being designed so that the tool/battery pack combination can be stood on the base surface in one rotational orientation of the battery pack.

Abstract: The injector height measuring tool assembly includes a tool having a magnetic member to which is attached a dial gauge having a plunger. The member is placed on the follower injector body and magnetically adheres thereto. The distal end of the plunger engages a body of the injector. There is also included in the assembly a storage/calibration member which retains the magnetism in the member of the tool and also calibrates it.

Abstract: The wrench holder comprises a pair of elongated, plastic members that slide or telescope together. Each of the members includes a body and a pair of bifurcated legs extending therefrom. The members pass through openings in a set of wrenches and telescope or slide together. Heads respectively at the ends of the elongated members retain the wrenches therebetween. A latching element at the distal ends of the legs and another latching element on the body in the region of the head enable the two members to be releasably interconnected.