Tools – Wrench – screwdriver – or driver therefor – Having work engaging and force exerting portion inserted...
Patent
1995-09-13
1996-12-03
Smith, James G.
Tools
Wrench, screwdriver, or driver therefor
Having work engaging and force exerting portion inserted...
81438, B25B 2300
Patent
active
055796680
ABSTRACT:
In order to enhance the availability of tools, a multifunction screwdriver has a handle with first and second ends that support a pair of removable and reversible screwdriver tips therein. The handle has first and second axial bores in each of the ends with the second bores of a greater diameter but lesser depth than the corresponding ones of the first bores. The second bores in the handle each have a bushing disposed therein which is suitably sized and configured for axial and radial retention. The removable and reversible screwdriver tips are each operatively associated with one of the first and second ends of the handle. The screwdriver tips each have an elongated shank of non-circular cross-section and a driving tip on each of opposite ends thereof. The bushings also each have an inner surface of non-circular cross-section for receiving at least one of the screwdriver tips therein. With this arrangement, the bushings are sized and shaped to transmit torque applied to the handle to fasteners through the elongated shanks and the driving tips of the removable and reversible screwdriver tips.
REFERENCES:
patent: 686424 (1901-11-01), Smith
patent: 2022775 (1935-12-01), Holland-Letz
patent: 4235133 (1980-11-01), Acevedo
patent: 4848197 (1989-07-01), Kikel
patent: 5179748 (1993-01-01), Lipic
"Consolidated Tool Works Screwdriver Set"; American Machinist; Nov. 24, 1921; p. 863.
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