Impact wrench

Details Impact wrench Impact wrench

1984-01-05

1985-12-10

Kazenske, E. R.

Tool driving or impacting

Impacting devices

With anvil arranged to transmit torsional impact to tool

173 93, 173 94, B25D 1502

Patent

active

045573379

ABSTRACT:
An impact wrench for using fastening or unfastening fasteners comprises a cylindrical rotor coupled to a motor shaft, said cylindrical rotor including a projection on its inner surface, the projection having a circumferential width and an axial length; an anvil coupled to said cylindrical rotor, the anvil including a hammer member capable of rocking therein, the hammer member being engageable with said projection; a springloaded pusher for urging said hammer member towards said projection, wherein a spring support slides either on a deep cam face or a shallow cam face both produced on said inner surface of the cylindrical rotor, thereby allowing said spring to become compressed or relaxed against said hammer member.

REFERENCES:
patent: 2820536 (1958-01-01), Boe
patent: 2881884 (1959-04-01), Amtsberg
patent: 2940566 (1960-06-01), Conover, Jr.
patent: 3789934 (1974-02-01), Schoeps et al.

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