Featured patents

Converter, Motor Driving Module, and Refrigerating Apparatus
US 08847534 B2, Sept. 30, 2014, Power Factor Control of Armature or Line Circuit, Dongsheng Li et al. / Hitachi Appliances, Inc. (Tokyo, JP)
A converter for converting three-phase AC to DC comprising:…

Auto-Compensating System and Method for Condition Monitoring of Electrical Machines
US 08829840 B2, Sept. 9, 2014, With Signals, Meters, Recorders or Testing Devices, David Richard Esler et al. / General Electric Company (Niskayuna, US)
An auto-compensating method for an electrical machine, the method comprising:…

Sensorless Commutation Circuit and Sensorless Driving Apparatus for Brushless Motor
US 08786224 B2, July 22, 2014, Comparator circuit or method, Ge-Wei Lee et al. / I-Shou University (Kaohsiung, TW)
A sensorless commutation circuit for a brushless motor, comprising:…

Motor Driving Apparatus With Rotational Speed Limitation Function and Fan Apparatus With Rotational Speed Limitation Function
US 08860350 B2, Oct. 14, 2014, Speed or rate-of-movement, Yen-Wen Su / Enermax Technology Corporation (Taoyuan, Taoyuan County, TW)
A motor driving apparatus applied to a fan and motor mechanism and a voltage…

Apparatus and Method for Reorientation During Sensed Drop
US 08872448 B2, Oct. 28, 2014, By means for producing periodic electrical pulses in the energizing circuit, Mikko Uusitalo et al. / Nokia Corporation (Espoo, FI)
An apparatus comprising:…

Method of Reducing the Effect of Preheat Time Variation During Shape Memory Alloy Actuation
US 08766564 B2, July 1, 2014, Thermoelectric motor, Nancy L. Johnson et al. / GM Global Technology Operations LLC (Detroit, US)
A method of activating a shape memory alloy (SMA) actuator, comprising the steps…

System and Method for Managing DC Link Switching Harmonics
US 08766584 B2, July 1, 2014, "Sampling" systems including miscellaneous "sampled data" control systems, Garrett B. Rodrigues et al. / Rockwell Automation Technologies, Inc. (Mayfield Heights, US)
A method for managing a current on a conductor linking a DC bus of a power…

Control of a Brushless Motor
US 08773052 B2, July 8, 2014, Phase shifted as function of speed or position, Tuncay Celik et al. / Dyson Technology Limited (Malmesbury, GB)
A method of controlling a brushless motor, the method comprising exciting…

Encoder for a Printer and Method
US 08669732 B2, March 11, 2014, Commutating switch-type encoder, Yuval Dim et al. / Hewlett-Packard Industrial Printing Ltd. (Netanya, IL)
A method of printing on print substrate by a printer, comprising:…

System and Method Including Feed-Forward Control of a Brushless Synchronous Motor
US 08593086 B2, Nov. 26, 2013, Brushless motor closed-loop control, Brian Guglielmetti et al. / OMAX Corporation (Kent, US)
A method for driving a brushless synchronous motor, the method comprising:…

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