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US 10,094,485 B2Granted
Variable-speed actuator
AssigneeFlowserve Management Company
InventorsWilliam T. Dolenti, Daniel J. Morris
Life of this patent
Estimating the term…
Abstract
A valve actuator including an electric motor is disclosed that includes a solid-state motor controller capable of operating a motor at variable speeds and a gear set that provides inherent braking. The speed and torque of the valve actuator may be selected. The speed and torque experienced by a valve may be varied over the length of a valve stroke. The valve actuator may include logic sufficient to act as a process controller.
Claims10
A valve actuator comprising:
- a housing;
- a motor controller;
- a variable speed motor with an output shaft, wherein the variable speed motor is configured for control by the motor controller;
- a power converter operatively coupled to the motor controller, and configured to receive electrical input of any voltage from 12 VDC to 690 VAC from a power supply and to output an electrical supply to the solid-state motor controller, wherein the power converter is a transformer, AC to DC converter, DC to DC converter, DC to AC inverter, or phase converter;
- the motor controller and the variable speed motor integrated within the housing;
- a gear train outside of the housing and operatively coupled to the output shaft;
- and
- wherein at least one of the variable speed motor, the gear train and the valve is configured to generate feedback signal receivable by the motor controller, the feedback signal indicating at least one of torque and speed thereof.
5 more elements
Dependencies are inferred from the claim text.