US Patent: 2,810,313
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| Open-End Ratchet Wrenches of the Spanner Type
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Patentee:
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| Raymond W. Hermanson (exact or similar names) - Los Angeles, CA |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Jun. 18, 1954 |
| Granted: |
Oct. 22, 1957 |
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Patent Pictures:
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Raymond W. Hermanson patent Oct. 22, 1957 |
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Stan Schulz
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Description: |
| Swinging pawls with internal springs and "stops" to limit their swing provide the grip for this ratcheting spanner. These would have to exactly match the circumference of the notched ring they are designed to turn.
U.S. Patents 620,143, 810,304, 1,198,913, 1,913,906, 2,578,687, 2,659,257, 2,700,315 and German patent DE-828,676 are cited as references. |
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