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US Patent: 4,016,782
Adjustable Ratchet Wrench
Patentee:
Henry L. Guimarin - Grapevine, TX

USPTO Classifications:
81/163, 81/63

Tool Categories:
wrenches : wrench components : wrench jaw components
wrenches : ratchet wrenches

Assignees:
None

Manufacturer:
Unknown

Witnesses:
Unknown

Patent Dates:
Applied: Sep. 12, 1975
Granted: Apr. 12, 1977

Patent Pictures: [ 1 | 2 ]
Henry L. Guimarin Patent April 12, 1977
USPTO pdf tiff
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Description:
This patent includes paired jaws on a lead screw mounted in a rectangular opening in the ratchet head. A thumb wheel in the center of the lead screw operates the jaw adjustment. The jaw faces are "V" shape to facilitate use or square or hexagonal nuts. The ratchet is reversible.

Used along with D238,140 and 4,112,792 in the GUIMARIN "GEM" adjustable ratchet wrench.

The references and specifications note prior patents 275,079, 295,797, 600,158, and 1,135,929.

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