초록 ▼

An electronically operated portable fastener driving tool is disclosed. Fasteners are driven into a workpiece by a driver blade which is actuated by a solenoid powered by a source of alternating current. Each actuation of the device produces a predetermined plurality of driving strokes being deliver

An electronically operated portable fastener driving tool is disclosed. Fasteners are driven into a workpiece by a driver blade which is actuated by a solenoid powered by a source of alternating current. Each actuation of the device produces a predetermined plurality of driving strokes being delivered to a fastener. The tool is also provided with means for preventing more than one fastener from being driven during each actuation of the tool.

대표청구항 ▼

In an electrically powered fastener driving tool which provides a multiple stroke drive to a fastener each time the tool is actuated having a hollow body comprising: (a) an elongated head portion housing an armature assembly which includes: (i) a solenoid, (ii) a plunger which fits within and slides

In an electrically powered fastener driving tool which provides a multiple stroke drive to a fastener each time the tool is actuated having a hollow body comprising: (a) an elongated head portion housing an armature assembly which includes: (i) a solenoid, (ii) a plunger which fits within and slides axially of said solenoid, and (iii) a driver blade for driving fasteners connected to said plunger; (b) a handle portion projecting rearwardly from said head portion having trigger means for actuating the tool; (c) a magazine portion for holding a plurality of fasteners and for advancing said fasteners in position for driving engagement with said driver blade, said magazine portion connected to said head portion; (d) an electronic trigger control circuit for supplying the solenoid with a predetermined plurality of unidirectional current pulses each time the trigger means is actuated for impelling the driver blade to provide a like number of driving strokes to a single fastener in response to each actuation of the trigger means; and (e) means for preventing more than one fastener from being driven during a single actuation of the tool by preventing the advancement of a second fastener into the axial path of the driver blade while a first fastener is being driven with a plurality of strokes of the driver blade.