Patent application number | Description | Published |
20090090880 | Power Generation for Valve Actuators - The present invention utilizes operation of a valve actuator to generate electrical power. A portion of the mechanical energy generated by operation of a valve actuator is converted to electrical energy. The mechanical energy may be converted to electrical energy at the same time as the valve actuator is operating or the mechanical energy may be stored for later conversion. A valve actuator may be operated manually, electrically, pneumatically, or hydraulically. Generated electrical energy may also be stored. | 04-09-2009 |
20090302246 | Handwheel Torque Limitor - A torque limiting device with an override mechanism coupled to a valve assembly capable of limiting the torque applied to the valve assembly and selectively being overridden to permit the application of excessive torque to the valve assembly. Tattletale devices capable of indicating when an override mechanism has been activated can also be integrated with the torque limiting device. | 12-10-2009 |
20100001177 | Rotary Encoder with Built-in-Self-Test - A rotary encoder using built-in self test ability with redundant and fault tolerant position sensing. Wherein the rotary encoder is used with a variety of rotary equipment including a valve actuator including the generation of speed data ( | 01-07-2010 |
20100005897 | Load Measurement Method and Device - A device for axial load measurement on a mechanical control device ( | 01-14-2010 |
20100012874 | Rotary Encoder Frequency Analysis - A novel method for diagnosing problems with a valve actuator or other rotary equipment. Frequency analysis is performed upon speed, position, torque, thrust, or vibration data. Speed or position data may be provided by a rotary encoder. | 01-21-2010 |
20110146818 | Torque Indicator - Torque indicator markings incorporated with handwheel devices connected to actuators or valve assemblies provide visual indication of the amount of torque being applied to an actuator or valve assembly by the handwheel device. Tattletale torque indicators incorporated with a handwheel device further provide a persistent indication of the maximum amount of torque applied to an actuator or valve assembly connected to the handwheel device. | 06-23-2011 |
20110175006 | VARIABLE SPEED ACTUATOR - 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. | 07-21-2011 |
20110259125 | LOAD MEASUREMENT METHOD AND DEVICE - A device for axial load measurement on a mechanical control device having a rotating shaft may be used to derive a torque measurement. A mechanical control device may comprise a valve actuator for fluid flow control devices. The load measurement device may include a beam operatively connected to a rotatable shaft and configured to deform under axial displacement of the shaft. A sensor may be coupled with the at least one beam and configured to produce an output signal related to the axial displacement of the shaft. The beam may be retained between two bearings on the rotatable shaft at a first end, and fixed to a housing of the mechanical control device at a second end. The first end of the beam may displace axially with the rotatable shaft. The beam may comprise a discrete segment of a uniform width and thickness. | 10-27-2011 |
20130001033 | HANDWHEEL TORQUE LIMITOR - A torque limiting device with an override mechanism coupled to a valve assembly capable of limiting the torque applied to the valve assembly and selectively being overridden to permit the application of excessive torque to the valve assembly. Tattletale devices capable of indicating when an override mechanism has been activated can also be integrated with the torque limiting device. | 01-03-2013 |
20130199322 | POWER GENERATION FOR VALVE ACTUATORS - The present invention utilizes operation of a valve actuator to generate electrical power. A portion of the mechanical energy generated by operation of a valve actuator is converted to electrical energy. The mechanical energy may be converted to electrical energy at the same time as the valve actuator is operating or the mechanical energy may be stored for later conversion. A valve actuator may be operated manually, electrically, pneumatically, or hydraulically. Generated electrical energy may also be stored. | 08-08-2013 |