Fluid handling – With indicator – register – recorder – alarm or inspection means – Position or extent of motion indicator
Patent
1988-02-29
1989-06-06
Rivell, John
Fluid handling
With indicator, register, recorder, alarm or inspection means
Position or extent of motion indicator
251 14, 251 636, F16K 3700, F16K 31143
Patent
active
048362433
ABSTRACT:
A hydraulic actuator for controlling the operation of a safety valve actuates automatically upon loss of control pressure. The hydraulic chamber of the actuator is sealed by static annular seals which bear against polished external surfaces of an indicator stem and a cylindrical piston, respectively. The piston is connected by a threaded coupling to the valve stem to accommodate assembly and drift alignment of the gate bore with the safety valve bore. A threaded rod is pinned to the valve stem and is received within an axial pocket of the piston. The piston is movably coupled to the threaded rod by a collar which has inside diameter threads and outside diameter threads. The valve stem static seal is retained within a smooth counterbore formed on the coupling bonnet by a packing collar. The packing collar also serves as a seating stop for the piston and is axially adjustable within the coupling bonnet during assembly onto a safety valve for establishing smooth bore alignment of the gate bore with the safety valve bore.
REFERENCES:
patent: 2566772 (1951-09-01), Otis
patent: 2566773 (1951-09-01), Otis
patent: 2566775 (1951-09-01), Otis
patent: 2566776 (1951-09-01), Otis
patent: 2588284 (1952-03-01), Otis
patent: 2693819 (1954-11-01), Otis
patent: 3232174 (1966-02-01), Grimmer
patent: 3958592 (1976-05-01), Wells et al.
patent: 3993284 (1976-11-01), Lukens, Jr.
patent: 4087073 (1978-05-01), Runberg et al.
patent: 4153072 (1979-05-01), Thompson
patent: 4213480 (1980-07-01), Orum et al.
patent: 4230299 (1980-10-01), Pierce, Jr.
patent: 4423748 (1984-01-01), Ellett
patent: 4445424 (1984-05-01), Foster et al.
patent: 4585207 (1986-04-01), Shelton
patent: 4744386 (1988-05-01), Frazer
Griggs Dennis T.
Otis Engineering Corporation
Rivell John
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