Abstract: A power driver may include a housing, a tool chuck and a power take off mechanism. The tool chuck may have an input shaft mounted for rotation on the housing. The input shaft may support chuck jaws. A chuck actuating shaft may be mounted for rotation on the input shaft. The power take off mechanism may be connected to the tool chuck. The power take off mechanism may be adjustable into a DRILL DRIVE MODE to rotationally drive the input shaft and the chuck actuating shaft together as a unit, and a CHUCK MODE to rotationally drive the chuck actuating shaft relative to the input shaft. The power take off mechanism may be internal of the housing. The power take off mechanism in the CHUCK MODE may rotationally fix the input shaft to the housing.

Abstract: A tool chuck may include an input shaft. A chuck actuating shaft may be mounted for rotation on the input shaft. A chuck actuating screw may be screw coupled to the chuck actuating shaft. A spring may be interposed between the chuck actuating shaft and the input shaft. Upon tightening the tool chuck, the spring may be compressed to provide force against the chuck actuating screw.

Abstract: A chuck for a drill/driver. The chuck can include an input shaft having a cavity, a chuck actuating shaft and a chuck actuating screw. The chuck actuating shaft can be received in the cavity and can be rotatable about a chuck axis. The chuck actuating shaft can have a threaded aperture. The chuck actuating screw can have a threaded portion that is threadably engaged to the threaded aperture. The jaws can be received in the cavity and can engage the input shaft. The jaws can be coupled to the chuck actuating screw such that rotation of the chuck actuating shaft relative to the chuck actuating screw translates the jaws so that the jaws converge toward or diverge from the chuck axis. The chuck further includes a device coupled to at least one of the chuck actuating screw, the chuck actuating shaft and the input shaft for limiting elastic elongation of the chuck actuating screw in an axial direction when the jaws are positioned in a fully opened condition.

Abstract: A drill is provided with a chuck that is capable of being tightened or loosened by operation of the drill. The chuck includes a shift mechanism that interacts with the multi-speed transmission of the drill to ensure that the transmission is shifted into a desired gear ratio whenever the chuck is shifted from a drill mode to a chuck mode.

Abstract: A fastening tool that inserts a fastener into a work-piece includes a trigger and an actuation member connected to the trigger. The fastening tool further includes a trigger switch and a trigger block. The trigger block has a blocked position that inhibits the actuation member from actuating the trigger switch. The trigger block also has an unblocked position that does not inhibit the actuation member from actuating the trigger switch. The mechanical contact trip mechanism provides a contact trip without the need for additional switches and a complicated trigger assembly.

Abstract: A fastening tool including a contact trip mechanism having a trigger block. The contact trip mechanism is moveable to a retracted position. The fastening tool also includes a slider member connected to the trigger block and a link member adjustably coupled to the slider member. The fastening tool further includes a lockout pin movable between a first position and a second position. The lockout pin in the first position decouples the slider member and the link member and holds the trigger block in a blocked position.