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US Patent: 3,545,315
Frank Patrick - Meadville, PA

USPTO Classifications:

Tool Categories:
wrenches : pliers type wrenches : locking pliers

Channellock, Inc. - Meadville, PA

Channellock, Inc. - Meadville, PA

none listed

Patent Dates:
Applied: May 09, 1968
Granted: Dec. 08, 1970

Patent Pictures: [ 1 | 2 ]
Frank Patrick patent December 8, 1970
USPTO pdf tiff
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The focus of the patent is provisions to absorb the shock of opening locking pliers of the types shown in the drawings. The specifications include a description of elastomeric coating on the release lever, and two-stage opening in the linkage.

The specifications note patent nos. 2,576,286 and 2,997,903. Some of the features described in this patent appear on CHANNELLOCK 910 GRIP-LOCK plier wrenches. Some of the features appear in Patrick's parallel patent (no. 3,545,316).

This patent and 3,606,806 appear on the CHANNELLOCK No. 950 TOG-L-LOK pliers.

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