Adjustable open end wrench

Details Adjustable open end wrench Adjustable open end wrench

1990-06-25

1991-05-21

Schmidt, Frederick R.

Tools

Wrench, screwdriver, or driver therefor

Sliding jaw, handle-lever grip

81126, 81128, B25B 1312

Patent

active

050165038

ABSTRACT:
This invention is an open end wrench which is self-adjusting and ratcheting, which clamps a nut with a force greater than the nut turning force exerted on the wrench handle and which fits an entire range of nut sizes.

REFERENCES:
patent: 52930 (1866-02-01), Morehouse
patent: 77107 (1868-04-01), Searle
patent: 516286 (1894-03-01), Wachtler
patent: 1075516 (1913-10-01), Sturdy
patent: 1092152 (1914-04-01), Lebombarb
patent: 1178287 (1916-04-01), Anderson
patent: 1181654 (1916-01-01), Eifel
patent: 1253227 (1918-01-01), Gaisser
patent: 2590792 (1952-03-01), Reneer
patent: 3803954 (1974-04-01), Lenker
patent: 4094215 (1978-06-01), Hudson

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