Tools – Wrench – screwdriver – or driver therefor – Machine
Patent
1981-12-22
1984-07-31
Jones, Jr., James L.
Tools
Wrench, screwdriver, or driver therefor
Machine
81454, 81456, B25B 2302
Patent
active
044622830
ABSTRACT:
For screwing a threaded fastener into an internally threaded member, there is disclosed a screw driver apparatus which comprises a casing formed with a through bore to receive the threaded fastener, a tubular member formed with a supplying passageway having a front end open to the through bore for supplying the threaded fastener into the through bore, a screw driver reciprocably and rotatably received in the through bore and having a front end portion to be slidably guided by the through bore and formed with a depression for retaining the threaded fastener therein, and reciprocating means for reciprocating the screw driver with respect to the casing between a first axial position where the front end portion of the screw driver projects outwardly from the casing to force the threaded fastener to be screwed into the internally threaded member and a second axial position where the front end portion of the screw driver is positioned rearwardly of the front end portion of the supplying passageway to allow the threaded fastener to be supplied into the casing through the supplying passageway. The screw driver has a longitudinaly intermediate portion smaller in diameter than the through bore.
REFERENCES:
patent: 3918533 (1975-11-01), Weber
patent: 4162639 (1979-07-01), Gill
patent: 4236555 (1980-12-01), Dewey
Jones Jr. James L.
Nissan Motor Company Limited
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