Valves and valve actuation – Electrically actuated valve – Rotary electric actuator
Reexamination Certificate
2011-01-18
2011-01-18
Fristoe, Jr., John K (Department: 3753)
Valves and valve actuation
Electrically actuated valve
Rotary electric actuator
Reexamination Certificate
active
07871059
ABSTRACT:
A valve for adjusting the flow-rate of fluids, servo-controlled by an electric motor having within a hermetic enclosure capsule and supported rotatably with a support for reducing rotary friction, the rotor component of the electric motor with a screw-and-nut coupling with a flow control element restrained to perform only axial translational motions in a valve body provided with intake and discharge ports and fixed coaxially to the capsule. The support is provided by a radial bearing and associated with the rotor component in a position corresponding to the portion of the rotor component inside which the screw-and-nut coupling is provided.
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Dalan Andrea
Nalini Luigi
Carel S.p.A.
Fristoe, Jr. John K
Josif Albert
Modiano & Associati
O'Byrne Daniel J.
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