Hydraulically operated hand tool for forcing open doors

Details Hydraulically operated hand tool for forcing open doors Hydraulically operated hand tool for forcing open doors

1982-05-19

1984-04-17

Watson, Robert C.

Implements or apparatus for applying pushing or pulling force

Fluid pressure

Vehicle attached

29239, B66F 324

Patent

active

044430019

ABSTRACT:
A hand tool, for use with a hydraulic pump, for forcing or prying open doors and other objects. First and second jaw members, each having spaced apart fingers, are connected together by a hydraulic piston-cylinder assembly which is adapted for hydraulic connection to the hydraulic pump. The spaced apart fingers of the jaw members mesh with each other when the jaw members are positioned together. A plate member defining opposed sides is connected to the first jaw member and the second jaw member defines first and second guide members with each of the guide members projecting adjacent respective sides of the plate member and in slidable relationship with the plate member. A third guide member extends from the plate member and encircles a portion of the piston-cylinder assembly in slidable relationship with the assembly.

REFERENCES:
patent: 2283089 (1942-05-01), Pfauser
patent: 2947275 (1960-08-01), Edmonds
patent: 3081066 (1963-03-01), Murawski
patent: 3426752 (1969-02-01), Laico
patent: 3649975 (1972-03-01), Spurgeon
patent: 3662994 (1972-05-01), Johns
patent: 3705581 (1972-12-01), Drake
patent: 3762688 (1973-10-01), Leonhardt
patent: 3891187 (1975-06-01), Bearden
patent: 3946988 (1976-03-01), Kehren
patent: 4197706 (1980-04-01), Blake

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