Device for unlocking frozen valves

Details Device for unlocking frozen valves Device for unlocking frozen valves

1976-03-08

1977-06-28

Jones, Jr., James L.

Tools

Wrench, screwdriver, or driver therefor

Machine

B25B 1304, B25B 1350

Patent

active

040317846

ABSTRACT:
A first lever engages a first collar rotationally immobile about the body of a valve. A second lever interconnects the first collar with a second collar, which second collar is non-rotatably mounted upon the stem of the valve. Manual vertical manipulation of the levers toward one another is translated through the first and second levers and collars to apply a torque force upon the stem with respect to the valve body to open the valve.

REFERENCES:
patent: 1509258 (1924-09-01), Reiser
patent: 1880615 (1932-10-01), White et al.
patent: 2014718 (1935-09-01), Carington

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