Tools – Wrench – screwdriver – or driver therefor – Handle clutched to head
Patent
1994-02-28
1996-04-23
Smith, James G.
Tools
Wrench, screwdriver, or driver therefor
Handle clutched to head
811211, 811247, B25B 1300
Patent
active
055093329
ABSTRACT:
A friction clutch hand tool in the style of a socket wrench for tightening and loosening common mechanical fasteners. Socket may be received from either side into a cylindrical opening through the wrench head. Once received inside the head, socket is gripped by rollers held captive within notches provided in cylindrical wall of opening in wrench head. Rollers grip outside surface of socket directly. Rotation of head relative to socket causes rollers to roll up ramps out of notches and wedge tight against socket, thereby simultaneously imparting torsion to fastener while clamping socket down on fastener. Socket may be assembled around fastener from multiple interlocking pieces. Socket may also be hollow.
REFERENCES:
patent: 1395585 (1921-11-01), Kizer
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patent: 1482075 (1924-01-01), Fisher
patent: 2460766 (1949-02-01), Peterson
patent: 2896488 (1959-07-01), Ahana
patent: 3621739 (1971-11-01), Seablom
patent: 4603606 (1986-08-01), Headen
patent: 4669339 (1987-06-01), Cartwright
patent: 4987802 (1991-01-01), Chern
patent: 5086673 (1992-02-01), Korty
patent: 5277087 (1994-01-01), Wilson et al.
Smith James G.
Three Star Enterprises, Inc.
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