Ratcheting box wrench

Details Ratcheting box wrench Ratcheting box wrench

1987-05-21

1988-05-17

Schmidt, Frederick R.

Tools

Wrench, screwdriver, or driver therefor

Machine

81 61, 81 631, B25B 1346

Patent

active

047442719

ABSTRACT:
A ratcheting hydraulic torque wrench in which the lever arm is provided with a tracking arm guided within a channel in a wrench body. The tool head is divided into a ratcheting portion containing roller drive pins, and a notched portion to allow access to pipe flange nuts.

REFERENCES:
patent: 418337 (1889-12-01), Kors
patent: 3745858 (1973-03-01), Biach
patent: 4141262 (1979-02-01), Smith
patent: 4275620 (1981-06-01), Collins
patent: 4336727 (1982-06-01), Junkers
patent: 4448906 (1984-05-01), Collins
patent: 4513645 (1985-04-01), Grabovac et al.

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