Screwdriver and screw

Tools – Wrench – screwdriver – or driver therefor – Having work engaging and force exerting portion inserted...

Patent

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Details

81456, 81461, 411405, 411407, B25B 2310

Patent

active

06148699&

ABSTRACT:
A screwdriver has a shaft with a bit on one end for engaging a bit receptacle formed on a head of a screw and a screw engaging device coupled to and in surrounding relation to the shaft. The screw engaging device defines a cylindrical void configured to receive and place the head of the screw onto the bit. The inner wall of the screw engaging device defining the cylindrical void has at least one tab extending toward the center of the center of the cylindrical void for engaging the head of the screw. Preferably, there are four tabs disposed evenly space on the inner wall of the screw engaging device. The screw engaging device has a first sleeve defining the cylindrical void and oppositely disposed slots. A second sleeve is coupled to the first sleeve to form the cylindrical void for receiving the shaft therethrough. The shaft has oppositely facing receptacles formed on the outer circumference of the shaft. The screwdriver further has a pair of brackets, each bracket being placed in each one of the oppositely positioned slots and disposed in respective receptacle.

REFERENCES:
patent: 3244208 (1966-04-01), McKenzie
patent: 3707894 (1973-01-01), Stillwagon, Jr.
patent: 3739825 (1973-06-01), Knox
patent: 3942405 (1976-03-01), Wagner
patent: 4140161 (1979-02-01), Russo
patent: 4526072 (1985-07-01), Manhoff, Jr.
patent: 4647260 (1987-03-01), O'Hara et al.
patent: 4736658 (1988-04-01), Jore
patent: 4809572 (1989-03-01), Sasaki
patent: 5207127 (1993-05-01), Nick
patent: 5309799 (1994-05-01), Jore
patent: 5682800 (1997-11-01), Jore

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