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US Patent: 3,885,479
Komei Ono - Tokyo, Japan

USPTO Classifications:
81/3.43, 81/90.5, D8/21

Tool Categories:
wrenches : wrench adjustment types : self-adjust wrenches
wrenches : pipe wrenches : chain and strap wrenches



none listed

Patent Dates:
Applied: May 18, 1973
Granted: May 27, 1975

Patent Pictures: [ 1 | 2 ]
K. Ono patent May 27, 1975
USPTO pdf tiff
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3,885,479 in ESPACENET
Abstract: "There is provided an improved wrench by which a threaded body is easily removed or screwed with a simple operation. The wrench of the present invention has a tightening means having plural curved members pivoted with each other, a lever, and a clamping member. An end of the tightening means is pivotally connected to a lever while the other end thereof is pivotally connected to the clamping member. The clamping means is removably engaged with the lever by means of plural notches to one of which a pin is engaged."

Some TURNY wrenches and oil filter wrenches produced in Japan bear this patent number and corresponding British patent number GB-1,391,409. They have a different form of adjustable "catch" than described and shown in the patent. The ESPACENET record for this patent lists equivalent patent numbers for several countries.

The patent cites W.L. Bessolo patent numbers 1,318,047, 1,651,576 and 1,651,577 along with patent number 3,465,622 and British patent GB-190907414 as references.

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