Oil filter wrench

Details Oil filter wrench Oil filter wrench

1993-11-04

1995-08-15

Smith, James G.

Tools

Wrench, screwdriver, or driver therefor

Rigid jaws

81 34, 811251, B25B 1300

Patent

active

054409578

ABSTRACT:
An improved filter wrench is shown for applying torque to a canister-type oil filter to engage and disengage the threaded end thereof from an engine block. The tool includes a wrench body having a larger and smaller aperture for reversibly receiving smaller and larger relatively sized filter canisters. A separate driver adapter engages the exterior surface of opposite extents of the wrench body when different sized filters are being engaged within the larger and smaller apertures of the wrench body respectively, so that a variety of sizes of filters can be driven by the wrench.

REFERENCES:
patent: 842039 (1907-01-01), Walt
patent: 2746330 (1955-05-01), Pfetzing
patent: 3385141 (1968-05-01), Norman
patent: 4266452 (1981-05-01), Crist
patent: 4840094 (1989-06-01), Macor
patent: 4865727 (1989-09-01), Krauss
patent: 4867017 (1989-09-01), Holman
patent: 4982629 (1991-01-01), Germain
patent: 5048379 (1991-09-01), Gramera et al.
patent: 5148724 (1992-09-01), Rexford

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