US Patent: 3,850,057
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| COMBINATION TORQUEING AND RATCHETING WRENCH
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Patentee:
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| James Preston Evans (exact or similar names) - Oklahoma City, OK |
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Patent Dates:
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| Applied: |
Nov. 26, 1973 |
| Granted: |
Nov. 26, 1974 |
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Patent Pictures:
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Patent 3,850,057 - edited drawing |
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Stan Schulz
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Description: |
| "Open end" jaw shapes that depending on rotation and positioning in relation to the hexagonal work piece can operate as ratchet, or firmly grip.
The patent number appears on packaging for EVANS T&R wrenches and examples of the wrenches.
Mentions of related prior art include patent nos. 3,762,244, 574,622, 2,669,147, 3,242,775, and 3,252,359.
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