Tools – Wrench – screwdriver – or driver therefor – Having work engaging and force exerting portion inserted...
Patent
1993-07-14
1994-08-16
Meislin, D. S.
Tools
Wrench, screwdriver, or driver therefor
Having work engaging and force exerting portion inserted...
811774, B25B 2300, B25G 108
Patent
active
053376374
ABSTRACT:
An improved screwdriver comprises a hollow cylinder having a plurality of guiding slots therein, each guiding slot receiving a slidable connecting piece having one end connected to a driver bit; a hollow guiding cylinder having a plurality of sliding slots therein is connected to one end of the hollow cylinder, the sliding slots corresponding to the guiding slots in the hollow cylinder for receiving the driver bits; a positioning head is connected to the other end of the hollow guiding cylinder and has an exit end with a hole of the size of the driver bits; a hollow sealing cover is connected to the other end of the hollow cylinder; and an actuator rod is slidably mounted within the sealing cover, and a peg is provided at the center of the actuating rod. An engaging piece is engageable at the outside of the sealing cover such that by rotating and pressing down the actuating rod, the peg is caused to contact any selected connecting piece, so that different sizes and shapes of driver bits can be extended from the positioning head as desired.
REFERENCES:
patent: 1579498 (1926-04-01), Anderson
patent: 3750729 (1973-08-01), Lemieux
patent: 4976175 (1990-12-01), Hung
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