Valves and valve actuation – Electrically actuated valve – Rotary electric actuator
Patent
1998-03-06
1999-06-29
Lee, Kevin
Valves and valve actuation
Electrically actuated valve
Rotary electric actuator
25112912, 251 69, 74 2, 310 78, F16K 3104
Patent
active
059156686
ABSTRACT:
A valve actuating apparatus is provided for operating a valve between an open and closed position. The valve actuating apparatus includes an actuator having an output member with the actuator providing reciprocating motion to the output member upon energization of the actuator. A guide member having a detent therein is connected to the output member of the actuator. The apparatus includes a clutch assembly having a housing, an electromagnet assembly, an engagement member, and a housing opening with the engagement member disposed in the housing between the electromagnet assembly, and the housing opening. The housing opening is adapted to receive the guide member therein such that the clutch assembly and a portion of the guide member are slidably connected. The electromagnet assembly is selectively energized to force the engagement member against the guide member disposed in the housing opening. A valve control arm is adapted for engagement with the valve to operate the valve between the open and closed positions and is connected to the clutch assembly. A spring is connected to the valve control arm or the clutch assembly for normally biasing the clutch assembly to a first position along the guide member such that the valve control arm is in the closed position. Upon interruption of power to the electromagnet assembly, the spring forces the engagement member of the clutch assembly out of engagement with the detent in the guide member and the spring forces the clutch assembly to slide back along the guide member to the first position and rotates the valve control arm to the closed position.
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Hodapp Gary Dennis
Tofte Semor David
Lee Kevin
Micro-Trak Systems, Inc.
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