Adjustable socket-type wrench

Details Adjustable socket-type wrench Adjustable socket-type wrench

1987-08-25

1988-11-01

Schmidt, Frederick R.

Tools

Wrench, screwdriver, or driver therefor

Pivoted side jaw

81125, B25B 1328

Patent

active

047810840

ABSTRACT:
An adjustable socket-type oil filter wrench having a cup-like socket member for receiving an oil filter cartridge, a plurality of pivotable gripping arms circumferentially spaced about the socket member for radially inward and outward relative movement, and a cam arrangement for producing coordinated pivotal movement of the gripping arms for progressive gripping engagement with the circumferential periphery of an oil filter cartridge to apply removal torque thereto. The pivotal dispostion of the gripping arms enables the wrench to be used with oil filters of all conventional sizes.

REFERENCES:
patent: 66585 (1864-07-01), Harvey
patent: 1022761 (1912-04-01), Stvanek
patent: 1056084 (1913-03-01), Bates
patent: 2532972 (1950-12-01), Vertin
patent: 2764050 (1956-09-01), Leibowitz
patent: 4235134 (1980-11-01), McLendon
patent: 4643053 (1987-02-01), Rhodes
KP Industries, Adjustable Oil Filter Wrench, Model 7-6017 (Package).
Easco/K-D Tools, End Cap Oil Filter Wrench, Model 2790 (Package).
KA Star, Oil Filter Wrench, Model 630 (Package).

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