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US Patent: 2,592,803
Release And Adjusting Means For Vise-Type Wrenches
Patentee:
Jacob G. Heim (exact or similar names) - San Gabriel, CA

USPTO Classifications:
81/344, 81/368, 81/369, 81/372, 81/380, 81/399

Tool Categories:
wrenches : pliers type wrenches : locking pliers

Assignees:
Calpat Corporation - Los Angeles, CA

Manufacturer:
Not known to have been produced

Witnesses:
none listed

Patent Dates:
Applied: May 10, 1948
Granted: Apr. 15, 1952

Patent Pictures:
Jacob G. Heim patent April 15, 1952
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Description:
The patent's features address controlling the gripping force, and providing means for one-hand opening of the jaws. Alternate means to achieve these ends are shown and described. The patent describes having the gripping force control on the lever handle, and the release means adjacent to the size adjusting screw. Alternate release means are shown and described.

The patent specifications cite patent nos. 1,086,078, 2,201,918, 2,428,949, 2,454,744, 2,462,709, and 2,489,895 as references. Cited in the specifications of patent no. 2,799,195.

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