Valves and valve actuation – Electrically actuated valve – Rotary electric actuator
Patent
1987-10-19
1988-10-04
Rosenthal, Arnold
Valves and valve actuation
Electrically actuated valve
Rotary electric actuator
137219, 137554, 25112911, F16K 3104
Patent
active
047751339
ABSTRACT:
An air valve actuated by an electric motor has a cylindrical inlet section. The inlet section defines a seating surface upstream of which is a support grid. A backplate to which the actuating motor is mounted is supported by a plurality of rods that extend downstream of the inlet section. A damper assembly includes a generally planar damper mounted for movement axial of the inlet section. The damper assembly includes a splined rod which extends upstream of the damper and into a cooperating spline in the support grid. A threaded spindle extends downstream of the damper plate through a cooperatively threaded motor-driven drive gear which is mounted for rotation on the backplate. Because a portion of the damper assembly is splined, the damper assembly cannot rotate and is driven axially within the valve by the rotation of the drive motor and drive gear. The backplate is spring biased so that upon the abutment of the damper plate with the inlet section seating surface the backplate becomes spring loaded in a manner which minimizes the chance that the drive motor will stall.
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Manthei Dennis L.
Ring H. Kenneth
Weber Steven C.
American Standard Inc.
Beres William J.
Harter Robert J.
Polsley David L.
Rosenthal Arnold
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