Force-applying tool particularly useful for force-opening window

Details Force-applying tool particularly useful for force-opening window Force-applying tool particularly useful for force-opening window

1989-03-28

1990-03-20

Spruill, Robert L.

Metal deforming

By relatively receding work-engaging tool-faces

254 93R, B66F 324

Patent

active

049090623

ABSTRACT:
A force-applying tool particularly useful for force-opening window grill bars, comprises a cylinder carrying a first jaw, a piston movable within the cylinder and including a rod carrying a second jaw, a fluid pumping device for pumping fluid to the cylinder to apply a force between the piston and cylinder tending to spread apart the first and second jaws, and a pivotable coupling between the fluid pumping device and the cylinder and piston rod permitting the fluid pumping device to bring its longitudinal axis either parallel to or perpendicular to the longitudinal axis of the cylinder and piston rod. The pivotable coupling includes a fluid passageway therethrough from the fluid pumping device to the interior of the cylinder in both of the pivotable positions of the fluid pumping device.

REFERENCES:
patent: 2135278 (1938-11-01), Countryman
patent: 2444250 (1948-06-01), Ferguson
patent: 2546203 (1951-03-01), Tucker
patent: 2790426 (1957-04-01), Mueller
patent: 3081066 (1963-03-01), Murawski
patent: 3765219 (1973-10-01), Easom

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