Oil filter wrench

Details Oil filter wrench Oil filter wrench

1980-01-14

1981-05-12

Smith, James G.

Tools

Wrench, screwdriver, or driver therefor

Rigid jaws

81 90B, 7100, B25B 1306

Patent

active

042664527

ABSTRACT:
A special purpose tool for applying torque to a cannister-type oil filter to engage and disengage the threaded end thereof with an engine block. The tool is generally cup-shaped, having an internal surface for engaging the polygonal end of the filter in the manner of a socket wrench. The open end of the tool is flared to a larger diameter than the filter body for catching oil which escapes as the filter is removed, and an internal space is provided to act as a reservoir for the escaping oil. Slots are provided in the lower surface of the tool for receiving a bar to increase the applied torque.

REFERENCES:
patent: 3014389 (1961-12-01), O'Hara
patent: 3385141 (1968-05-01), Norman
patent: 3635106 (1972-01-01), Homs
patent: 3911983 (1975-10-01), Wyatt
patent: 4177529 (1979-12-01), Sikula, Jr.

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