Elongated-member-driving apparatus – Explosive-type driving means – With plunger
Patent
1987-11-25
1989-04-18
Bell, Paul A.
Elongated-member-driving apparatus
Explosive-type driving means
With plunger
227120, 227125, B25C 114
Patent
active
048219380
ABSTRACT:
A powder-actuated fastener-driving tool of the type disclosed in U.S. Pat. No. 4,655,380, modified to include a safety system for preventing accidental discharge of the tool, a fastener storage and feed assembly, and a simpler firing pin assembly. The safety system prevents discharge of a fastener from the tool except when the front of the tool is engaged with a workpiece and the cylinder assembly is urged rearwardly a selected distance into the housing of the tool. The fastener storage and feed assembly is adapted to store a strip of fasteners and to index the strip so as to position the leading fastener in the strip in position to be discharged from the tool. In the present invention, a unitized firing pin is provided for firing the cartridges used in the tool, instead of the plural-element firing actuator and pin assembly of the '380 tool.
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