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US Patent: D173,830
Hand Wheel Wrench
Patentee:
Wayne K. Bergman (exact or similar names) - Toledo, OH

USPTO Classifications:
D8/27, D8/32

Tool Categories:
wrenches

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
none listed
Patent Dates:
Applied: Oct. 26, 1953
Granted: Jan. 11, 1955

Patent Pictures:
Wayne K. Bergman design patent January 11, 1955
USPTO (New site tip)
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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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