Fluid handling – With lock or seal
Patent
1979-08-01
1981-05-26
Schwadron, Martin P.
Fluid handling
With lock or seal
137385, 70179, F16K 3500
Patent
active
042692210
ABSTRACT:
A valve stem lock for valves having an exposed valve stem. The lock is comprised of a pair of hinged sections movable from an open position to a closed position to lock about a valve stem. The two sections are provided with a base having slots which are adapted to bear against exposed bolts or the yoke of the valve stem so that rotation of the valve stem upon removal of a part such as a bushing nut or the like is prevented. The two hinged sections are adapted to be locked together in the closed position.
REFERENCES:
patent: 1099280 (1914-06-01), Connolly
patent: 1432621 (1922-10-01), Rath
patent: 2077997 (1937-04-01), Hedene
patent: 2316956 (1943-04-01), Heath
Chambers A. Michael
Robbins Glenn K.
Schwadron Martin P.
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