US Patent: 5,056,385
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| Compound Toggle Link
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Patentee:
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| Ralph Petersen (exact or similar names) - DeWitt, NE |
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Patent Dates:
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| Applied: |
Apr. 30, 1990 |
| Granted: |
Oct. 15, 1991 |
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Patent Pictures:
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Ralph Petersen patent October 15, 1991 |
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Stan Schulz
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Description: |
| The patent is for a toggle link with four pivot points in the "power line." The fourth pivot is a secondary piece in the swing lever handle. Used together with pat. no, 6,626,070 in Vise-Grip (tm) Fast-Release (tm) tools.
The patent has an extensive history of toggle locking tools and related prior art. The text has two series of prior art patents. The first relates to quick release; the second to toggle locking tools.
In 2015, the patents also appear on CRAFTSMAN (tm) branded locking pliers. The patent and subsequent manufacturing are part of the transition from family owned Petersen Mfg. Co. to VISE-GRIP's identity as an "asset" of a large multi-national corporation. |
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