Hydraulic power wrench

Details Hydraulic power wrench Hydraulic power wrench

1990-08-15

1991-04-02

Meislin, D. S.

Tools

Wrench, screwdriver, or driver therefor

Machine

B25B 1346

Patent

active

050038478

ABSTRACT:
The hydraulic power wrench is provided with a wrench head (10) including a rotatably supported ring member (14) to be connected for rotation with a bolt head. The ring member (14) is driven be a piston (40) accommodated in a cylinder housing (11). Mutual engagement of the wrench head (10) and the cylinder housing (11) is effected by a holding recess (32) and an insert member (33). Thus, the wrench head (10) is connected in such a manner to the cylinder housing (11) that it can be easily detached. The connection is secured by locking members (34). By this arrangement, the wrench head (10) can be selectively combined with different cylinder housings (11).

REFERENCES:
patent: 4406185 (1983-09-01), Junkers
patent: 4619160 (1986-10-01), Meyer
patent: 4805496 (1989-02-01), Wagner et al.

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