Tools – Wrench – screwdriver – or driver therefor – Machine
Patent
1994-10-31
1996-11-05
Kisliuk, Bruce M.
Tools
Wrench, screwdriver, or driver therefor
Machine
81435, B25B 2304
Patent
active
055706185
ABSTRACT:
This invention relates to an advance and release mechanism for strips of a screwdriver assembly that sequentially drives fasteners retained in a holding strip securing a plurality of fasteners in a row. The apparatus has a slide body with a lateral slot and an intersecting vertical bore. The lateral slot has a uniform transverse cross-section configured to slidingly receive the strip. A driver shaft including fastener driving bit means for engaging and driving a lead fastener in succession into said work piece is journalled and longitudinally slidably housed in the bore between an engaged position and a withdrawn position. Advance means are mounted to the body for incrementally forwardly advancing the fasteners of the strip within the lateral slot in succession and for aligning the lead fastener coaxially with the bore. The advance means includes: a shuttle housed in the body and reciprocally movable between an advanced position and retracted position; a pawl pivotably supported on the shuttle, the pawl having a strip pusher arm at a forward end thereof; pawl biasing means engaging the pawl and shuttle for urging the pusher arm into parallel engagement with the strip; and pawl release means engaging the pawl for manually disengaging the pawl from the strip, thereby permitting the screw strip to be removed from the lateral slot.
REFERENCES:
patent: 3826419 (1974-07-01), Maestri
patent: 4146071 (1979-03-01), Mueller et al.
patent: 4167229 (1979-09-01), Keusch et al.
patent: 4581964 (1986-04-01), Takatsuru
patent: 5186085 (1993-02-01), Monacelli
Habermehl G. Lyle
Scherer Paul T.
Danganan Joni B.
Kisliuk Bruce M.
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