Tools – Wrench – screwdriver – or driver therefor – Having work engaging and force exerting portion inserted...
Patent
1998-01-13
1999-09-28
Scherbel, David A.
Tools
Wrench, screwdriver, or driver therefor
Having work engaging and force exerting portion inserted...
81490, 81438, B25B 2300
Patent
active
059570148
ABSTRACT:
A tool includes a base having a stud for engaging with a tool bit and includes a handle having a bore for engaging with the stud of the base. A stem is secured to the handle for engaging with the tool bit. The handle has one or more engaging channels. The base has one or more catches for engaging with the engaging channels and for securing the base to the handle and for increasing the size of the tool. The base has a latch for engaging with the handle and for further securing the base to the handle. A shaft may couple the stud of the base to the stem.
REFERENCES:
patent: 2758494 (1956-08-01), Jenkins
patent: 4399723 (1983-08-01), Marleau
patent: 4827812 (1989-05-01), Markovetz
patent: 5337637 (1994-08-01), Bih-Lein
patent: 5442982 (1995-08-01), Bell
patent: 5782146 (1998-06-01), Lin
patent: 5819612 (1998-10-01), Anderson
Liu Kuo Chen
Tseng Hung Kui
Wang Ghi Chung
Scherbel David A.
Wilson Lee
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