Universally usable hydraulic wrench for simultaneously tightenin

Details Universally usable hydraulic wrench for simultaneously tightenin Universally usable hydraulic wrench for simultaneously tightenin

1983-08-05

1984-05-08

Jones, Jr., James L.

Tools

Wrench, screwdriver, or driver therefor

Machine

81 5736, B25B 1300

Patent

active

044467621

ABSTRACT:
A hydraulically operated wrench which can be used either for simultaneously tightening or loosening two threaded connectors or to apply the full force of the wrench to tighten or loosen only a single threaded connector. The wrench includes a cylinder and a piston reciprocating therein, side plates connected to the cylinder, a drive lever mounted intermediate its ends on the side plates for pivoting about a first pivot axis and operatively connected at one end to the piston while being provided at the other end with a polygonal opening for engaging a polygonal member of a first threaded connector to be turned. A drive link provided at one end with a polygonal opening for drivingly engaging a polygonal member of a second threaded connector to be turned and an anchoring link provided at one end with an opening for turnably surrounding the polygonal member of the second threaded connector may be selectively attached at the other end to the side plates for pivoting about a second pivot axis spaced from and parallel to the first pivot axis. The wrench includes also an arrangement for exactly changing the distance between the first and the second pivot axes.

REFERENCES:
patent: 3138397 (1964-06-01), Griffiths
patent: 3287999 (1966-11-01), Kreckel et al.
patent: 4387611 (1983-06-01), Junkers
patent: 4406185 (1983-09-01), Junkers

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