Tools – Wrench – screwdriver – or driver therefor – Having work engaging and force exerting portion inserted...
Reexamination Certificate
2005-03-08
2005-03-08
Thomas, David B. (Department: 3723)
Tools
Wrench, screwdriver, or driver therefor
Having work engaging and force exerting portion inserted...
C081S490000, C081S177400
Reexamination Certificate
active
06862964
ABSTRACT:
A multi-functional hand tool includes a base, an upper cover, a cam, a turning disk, a plurality of tool heads, and an indication unit. The base and the upper cover have a plurality of tracks, respectively. The turning disk is pivotally connected at a lower side of the base. In the tracks at the base and the upper cover are tool heads having distinct styles, and the tool heads are accommodated by springs. A cam is additionally provided between the base and the upper cover. By rotating the turning disk, the cam is driven to push the tool heads and compress the springs, thereby stretching the distinct tool heads out of the tracks for further usage.
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Chen Yu-Gang
Yang Shu-Hao
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