Fluid handling – With lock or seal – Locks against rotary motion
Reexamination Certificate
2007-05-22
2007-05-22
Keasel, Eric (Department: 3753)
Fluid handling
With lock or seal
Locks against rotary motion
C070S177000, C070S180000, C070S212000, C070S226000
Reexamination Certificate
active
11155700
ABSTRACT:
A locking device for gate valves utilizes an available lock and avoids the necessity of having to chain or weld the lock to the bonnet or other stationary portion of a standard gate valve. The locking device includes a bracket, which mounts securely to one of the truss members of the gate valve. The bracket also includes an upwardly projecting mast, which is inserted between the adjacent spokes of the hand wheel. A cap is seated onto the hand wheel and the mast of the bracket installed on the gate valve. The cap includes a mast port though which the upper end of the mast projects when the cap is seated on the hand wheel. In certain embodiments, the cap covers all of the spokes on the hand wheel and has a number of downwardly projecting spaced spoke detents that are inserted into the openings between the adjacent spokes of the hand wheel. The secure and easy installation of the cap onto the mast of the bracket and the hand wheel prevents rotation of the hand wheel and adjustment of the valve.
REFERENCES:
patent: 1924831 (1933-08-01), Bockman
patent: 1986128 (1935-01-01), Trott
patent: 2161626 (1939-06-01), Loughner et al.
patent: 2324633 (1943-07-01), McCarthy et al.
patent: 2390972 (1945-12-01), Weinberg
patent: 3006181 (1961-10-01), Sarti
patent: 4397332 (1983-08-01), Sample
patent: 5238141 (1993-08-01), Callegari et al.
patent: 5353833 (1994-10-01), Martinez
patent: 5439130 (1995-08-01), Waugh
patent: 5596892 (1997-01-01), Edgar et al.
patent: 5620022 (1997-04-01), Manoogian
patent: 6044860 (2000-04-01), Neu
patent: 6164318 (2000-12-01), Dixon
patent: 6257273 (2001-07-01), Neu
patent: 6354116 (2002-03-01), Drake
patent: 6460383 (2002-10-01), Wadsworth, Jr.
patent: 6606888 (2003-08-01), Steinle et al.
patent: 6786230 (2004-09-01), Lacroix
patent: 6871518 (2005-03-01), Olsen et al.
patent: 912517 (1949-07-01), None
Fristoe Jr. John K.
Keasel Eric
Wood Herron & Evans LLP
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