초록 ▼

An impact-delivery tool (20) includes a motor-driven gear (72) which supports for continuous rotation therewith a relatively shiftable drive pin (80). The drive pin (80) is selectively shifted to couple the rotary drive of the gear (72) to a reciprocably operable, impact drive bar (76). An interrupt

An impact-delivery tool (20) includes a motor-driven gear (72) which supports for continuous rotation therewith a relatively shiftable drive pin (80). The drive pin (80) is selectively shifted to couple the rotary drive of the gear (72) to a reciprocably operable, impact drive bar (76). An interrupt mechanism (78) which detects workpiece engagement by the tool (20) and operator actuation of the tool, both necessary for tool operation, controls the coupling and decoupling of the drive pin (80) relative to the drive bar (76). The interrupt mechanism (78) provides selective processing of the tool (20) through an impact delivery power stroke and a return stroke while also precluding successive power strokes.

대표청구항 ▼

A tool for driving objects, comprising: (a) a rotary motor mounted in the tool for continuous rotation; (b) a gear driven by the motor; (c) a drive pin axially shiftable in and rotatable with the gear; (d) a drive bar reciprocated in the tool for driving fasteners therein during a power stroke; (e)

A tool for driving objects, comprising: (a) a rotary motor mounted in the tool for continuous rotation; (b) a gear driven by the motor; (c) a drive pin axially shiftable in and rotatable with the gear; (d) a drive bar reciprocated in the tool for driving fasteners therein during a power stroke; (e) the drive pin connectable to the drive bar to translate the motion thereto to produce a power stroke and a return stroke; (f) interrupt means engageable with the driven pin for disconnecting the drive pin from the drive bar to prevent successive drive strokes relative to gear rotation; (g) the drive pin has a follower; and (h) the interrupt means includes a track for the follower, and a shifter to shift the follower upon the track to cause engagement or disengagement between the drive pin and the drive bar.