Ratcheting box wrench

Details Ratcheting box wrench Ratcheting box wrench

1985-10-11

1987-06-02

Schmidt, Frederick R.

Tools

Wrench, screwdriver, or driver therefor

Machine

81 591, B25B 1346

Patent

active

046693386

ABSTRACT:
A hydraulic torque wrench in which the base of the hydraulic cylinder attaches directly to the end of the torque wrench body, and the piston rod of the hydraulic cylinder attaches to the lever arm of the tool head whereby the lever arm is provided with a tracking arm guided within a recess of the torque wrench body.

REFERENCES:
patent: 418337 (1889-12-01), Kors
patent: 3745858 (1973-07-01), Biach
patent: 4141262 (1979-02-01), Smith
patent: 4336727 (1982-06-01), Junkers
patent: 4448096 (1984-05-01), Collins
patent: 4513645 (1985-04-01), Grabovac et al.

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