Spanner

Details Spanner Spanner

2007-03-13

2007-03-13

Hail, III, Joseph J. (Department: 3723)

Tools

Wrench, screwdriver, or driver therefor

Pivoted outer jaw

C081S090100, C081S091300, C081S103000

Reexamination Certificate

active

10530796

ABSTRACT:
Disclosed is a spanner which is generally used as a typical tool for tightening or releasing a bolt. The spanner is capable of tightening or releasing a bolt continually in one direction by the effect of a toggle bar (400) pivotally mounted on a jaw of two jaws (200, 300) of the spanner head in a state that the toggle bar is urged to pivot toward one direction. A protrusion (30, 32) is formed on a distal end of the other jaw of the spanner head for gripping an angular portion of the bolt head so that it is possible to prevent the spanner head being readily disengaged from the bold head.

REFERENCES:
patent: 2537838 (1951-01-01), Logan
patent: 3044335 (1962-07-01), Keranen
patent: 4893528 (1990-01-01), Chung-Hsing
patent: 5148725 (1992-09-01), Botha
patent: 7-164336 (1995-06-01), None
Patent Abstracts of Japan, No. 07-164336, Jun. 27, 1995, 1 page.
Patent Abstracts of Japan, No. 2000-334668, Dec. 5, 2000, 1 page.

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