Fastener driving tool

Details Fastener driving tool Fastener driving tool

1986-04-03

1988-11-15

Bell, Paul A.

Elongated-member-driving apparatus

With means to move or guide member into driving position

Including supply magazine for constantly urged members

227120, 227130, B25C 513

Patent

active

047843080

ABSTRACT:
A pneumatic fastener driving tool includes a return system for efficiently and rapidly returning a drive piston to the static position and effecting a fastener feeding operation. A housing defines a pressure fluid reservoir connected by a pneumatic control system to a first side of a drive piston to move a driver blade through a drive track in a drive stroke. A pressure fluid actuated fastener feed assembly advances fasteners along a feed path to the drive track. Following a drive stroke, the return system connects the reservoir to the second side of the drive piston for moving the drive piston and driver blade in a return stroke. The return system also connects the reservoir to the fastener feeding assembly for feeding of a fastener. The return system includes two separate return valves operable at different flow capacities and fluid pressures for drive piston return and for fastener feeding.

REFERENCES:
patent: 3498517 (1970-03-01), Novak
patent: 3504840 (1970-04-01), Wandel et al.
patent: 3512454 (1970-05-01), Perkins
patent: 3543987 (1970-12-01), Obergfell
patent: 3563438 (1971-02-01), Doyle et al.
patent: 4319705 (1982-03-01), Geist et al.

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