Valves and valve actuation – Electrically actuated valve – Rotary electric actuator
Patent
1999-01-22
2000-03-07
Lee, Kevin
Valves and valve actuation
Electrically actuated valve
Rotary electric actuator
25112911, 25112902, 251250, F16K 3104
Patent
active
060329246
ABSTRACT:
A valve actuating device for opening and closing a valve is disclosed. The valve has a valve housing, a valve member sealingly engageable with a valve seat formed in the valve housing and a valve stem attached to the valve member for moving the valve member from an open position to a closed position, the valve member being biased to the open position. The valve actuating device includes a housing which is constructed to be attachable to the valve housing of the valve, a bidirectional motor mounted on the housing and a pinion gear which is coupled to the motor by a shaft, the pinion gear being drivable by the motor via the shaft. The device further includes a rack including a body having an end portion which is engageable with the valve stem of the valve and a side portion having a number of teeth thereon for meshing with teeth of the pinion gear, the rack being moveable, by the motor driving the pinion gear, between a first position in which the valve is in its open position and a second position in which the end portion of the rack engages the valve stem for maintaining the valve stem in its closed position.
REFERENCES:
patent: 2052987 (1936-09-01), Persons
patent: 2912215 (1959-11-01), Forrester
patent: 4318530 (1982-03-01), Lissmyr et al.
patent: 4551072 (1985-11-01), Barall
patent: 4807700 (1989-02-01), Wilkins
patent: 4836497 (1989-06-01), Beeson
patent: 4895301 (1990-01-01), Kennedy
patent: 5145146 (1992-09-01), Matsushima
patent: 5529282 (1996-06-01), Lebkuchner
patent: 5941500 (1999-08-01), Lebkuchner
Lee Kevin
SPARCO Inc.
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