US Patent: D173,830
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| Hand Wheel Wrench
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Patentee:
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| Wayne K. Bergman (exact or similar names) - Toledo, OH |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Oct. 26, 1953 |
| Granted: |
Jan. 11, 1955 |
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Patent Pictures:
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Wayne K. Bergman design patent January 11, 1955 |
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Stan Schulz
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Description: |
| Hand wheel wrenches provide leverage to turn hand wheels (valve handles) on large scale piping.
The specifications cite patent no. 1,957,462 and a catalog listing for an Allen conduit bender as references.
Term of patent 14 years.
D179,555 patents a similar head design with provision for a separate tubular handle. |
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