Class / Patent application number | Description | Number of patent applications / Date published |
073650000 | Torsional | 6 |
20090133504 | Saw torque and temperature sensor - A contactless SAW based torque and temperature sensor includes three SAW resonators | 05-28-2009 |
20100175478 | Torque Oscillation Monitoring - A method of detecting and monitoring torsional oscillation in a mechanical coupling between a prime mover and a multiphase alternating current (AC) electrical generator, comprises the steps of: detecting in at least one received signal variations that are indicative of changes in the rotational speed of the electrical generator; extracting information from the detected variations that are indicative of torsional oscillation to produce a torsional oscillation signal that has information relating to at least the amplitude of the torsional oscillation; and monitoring the torsional oscillation signal to determine the presence and severity of the torsional oscillation in the mechanical coupling. | 07-15-2010 |
20100186513 | SAW TORQUE AND TEMPERATURE SENSOR WITH IMPROVED TEMPERATURE SENSITIVITY - A contactless SAW based torque and temperature sensor comprising a first ( | 07-29-2010 |
20100242614 | TUNING FREQUENCY OF ROTATING BODY TORSIONAL MODE BY ADDING DETUNER - A solution is provided for tuning the frequency of a torsional mode of interest of a rotating body (such as a generator rotor torsional mode) by adding a detuner to act as an undamped torsional vibration absorber. The detuner may be coupled to an overhung shaft extending from the rotating body. The detuner may be modular, therefore weight can be added or subtracted easily from the detuner in order to adjust the stiffness and/or inertia of the overhung shaft. This change in stiffness and/or inertia yields a torsional frequency of oscillation in the overhung shaft substantially similar to the natural frequency of the torsional mode of interest of the rotating body, therefore forcing the frequency of the torsional mode of interest of the rotating body above or below its torsional natural frequency. | 09-30-2010 |
20110197680 | CONTROLLING TORSIONAL SHAFT OSCILLATION - Torsional oscillation of a shaft in a swing drive system of an excavator is minimized by monitoring torsional strain of the shaft. An electric motor provides torque to the shaft in response to a drive signal provided by a converter. A compensation circuit produces a compensation signal as a function of torsional strain of the shaft. A field excitation circuit or regulator powers a converter as a function of the compensation signal such that a counter torque is provided to the shaft and torsional oscillation of the shaft is reduced. | 08-18-2011 |
20160202131 | Method and Apparatus for Measuring Thrust | 07-14-2016 |