Hydraulic wrench

Details Hydraulic wrench Hydraulic wrench

1977-02-28

1979-02-27

Jones, Jr., James L.

Tools

Wrench, screwdriver, or driver therefor

Machine

81 5739, 81 5744, 92 31, B25B 1700

Patent

active

041412613

ABSTRACT:
A manually operable plunger extends rearwardly out of an elongated housing. An hydraulic force-multiplying system inside the housing causes a piston inside the housing to be moved forward when the plunger is pushed forward. A means causes an axially extending shaft that protrudes forwardly out of the housing to be rotated when the piston is moved forward. A conventional socket, as employed in a socket wrench, can be detachably secured to the front end of the shaft.

REFERENCES:
patent: 1173326 (1916-02-01), Taylor et al.
patent: 2131815 (1938-10-01), Nilson
patent: 3438451 (1969-04-01), Hayes

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