Power wrench

Details Power wrench Power wrench

1992-12-10

1993-11-23

Meislin, D. S.

Tools

Wrench, screwdriver, or driver therefor

Machine

92172, 81 5744, B25B 1346

Patent

active

052633888

ABSTRACT:
A power wrench comprises a ring member for connection to the screw head to be rotated, the ring member being rotated with an engaging lever. The ratchet lever is driven by the piston rod of a piston. The piston has a convex circumferential surface so that it may be tilted within the cylinder in order to adapt to different orientations of the piston rod.

REFERENCES:
patent: 2710137 (1955-06-01), Arnouil
patent: 4201099 (1980-05-01), Junkers
patent: 4246833 (1981-01-01), Burklund
patent: 4619160 (1986-10-01), Meyer
patent: 4765292 (1988-08-01), Morgado
patent: 4805496 (1989-02-01), Wagner et al.
patent: 4825730 (1989-05-01), Junkers
patent: 4854197 (1989-08-01), Walton
patent: 4982626 (1991-01-01), More et al.
patent: 5003847 (1991-04-01), Wagner

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