Tools – Wrench – screwdriver – or driver therefor – Attachment – or including adjunct or replaceable portion
Patent
1996-05-22
1997-07-08
Smith, James G.
Tools
Wrench, screwdriver, or driver therefor
Attachment, or including adjunct or replaceable portion
81179, 81DIG11, B25B 1358
Patent
active
056449593
ABSTRACT:
A universal socket wrench is provided comprising a housing having an internal chamber which is open at a first end thereof. A bundle of members having relatively large cross-sectional area-to-length ratios is supported in a slidable relationship within the chamber. The first ends of the slidable members are arranged for engagement with a fastener component. The slidable members have a chevron shape and a generally nonuniform cross-sectional area, and are arranged in sets, the outer and inner perimeter of each set having a fragmentary, asymmetrical shape. The slidable members are supported within the housing by outwardly extending flanges on the second ends of the members, which conform to and engage with inset shoulders on the chamber and on the second ends of the members. The second ends of the slidable members are biased by springs, one spring biasing each member, so that when the slidable members are displaced by contact with a fastener component, the springs tend to return the members to their original positions. The second end of the springs seat in an insert, the insert having a plurality of bores therethrough for that purpose, and a separate, thin backing plate positioned to ensure that the springs are retained within the second end of the housing.
REFERENCES:
patent: 5386749 (1995-02-01), Kim
patent: 5460064 (1995-10-01), Zayat
Media Group
Smith James G.
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