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| Number | Title | Issue Date |
| 7038420 | Method of regulating an electric motor and corresponding electric motor A method of regulating an electric motor, regulation being implemented with a loop of gain less than unity as a function of a divergence between a setpoint signal for an operating parameter of the motor and a measured value of the same operating parameter of the ele... | 05/02/2006 |
| 6459658 | Electronic timepiece having thermoelectric element An electronic timepiece has a thermoelectric element for generating an electromotive force in response to a temperature difference thereacross. A booster circuit boosts the electromotive force generated by the thermoelectric element. A storage mechanism s... | 10/01/2002 |
| 5574626 | Add-on heat sink An add-on heat sink for increasing the thermal efficiency of an existing heat sink comprises a support base, a first plurality of fins extending from the support base for dissipating heat and a second plurality of spaced fins extending from the support ba... | 11/12/1996 |
| 5517208 | Liquid crystal apparatus A liquid crystal apparatus is constituted by a display device for data display, a drive circuit unit for driving the display device, a unit substrate for supplying electric signals to the drive circuit unit, and a tape-form film carrier comprising an insu... | 05/14/1996 |
| 4674022 | SCR priming and sweep-out circuit apparatus An improved priming and sweep-out circuit in which losses are obviated or minimized by transferring energy resulting from such processes back to the power supply, and wherein a single common storage inductance is used in a secondary winding circuit of a s... | 06/16/1987 |
| 4467388 | Electromagnetic chuck power supply and controller An electromagnetic chuck power supply and control comprising a magnetic amplifier consisting of a saturable reactor supplying DC power at its output across the electromagnet coils of the electromagnetic chuck. A controllably variable DC current is supplie... | 08/21/1984 |
| 4387306 | Vital contact checking circuit A vital contact checking circuit which senses the state of the back contact of a relay in either a dynamic or static situation. In the former, a signal is coupled from its source to a detector by a coupling device, such as a transformer, and an additional... | 06/07/1983 |
| 4338650 | Fail-safe relay driving A relay is activated by an A.C. signal that is supplied through two toroids, connected in series to a signal source. The signal is inductively coupled through each toroid and each toroid is controlled by a corresponding microprocessor. A voltage is applie... | 07/06/1982 |
| 4280162 | Ground fault circuit interrupter A device for sensing current flow in an electric conductor employs a ferromagnetic core coupled to the conductor and a control winding on the core for applying a periodic magnetic flux to a part of the core of a magnitude to vary the core permeability, pr... | 07/21/1981 |
| 4230955 | Method of and apparatus for eliminating priming and carrier sweep-out losses in SCR switching circuits and the like This disclosure is directed to SCR charging or other energy-switching circuits provided with priming and carrier sweep-out networks and the like that normally incur energy losses in the priming and sweep-out processes, wherein such losses are obviated by ... | 10/28/1980 |
