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| Number | Title | Issue Date |
| 7855521 | Motor drive circuit A pulse generation unit generates a PWM signal whose duty ratio changes according to a target torque of a motor. A back electromotive detection circuit compares a back electromotive voltage generated at a coil of the motor with a middle point voltage of the coil, an... | 12/21/2010 |
| 7251957 | Musical jewelry apparatus A musical jewelry apparatus is disclosed. The musical jewelry apparatus comprises a front member, a rear member, a hinge member, a musical and a power source. The hinge member is partially disposed on a portion of the front member and a portion of the rear member; a... | 08/07/2007 |
| 7243769 | Dual motion actuator An actuator is disclosed which can be used in multiple applications, and which provides both linear and rotary outputs. The device comprises a motor driven rotor having clutch plates on both sides thereof. One clutch plate includes a gear driven output, and the othe... | 07/17/2007 |
| 7221115 | Method and apparatus for controlling multiplexed motors A control for stopping the rotation of the output shafts of a plurality of multiplexed motors configured in columns and rows with the first connector of each motor in a given column connected in parallel and with the second connector of each motor of a given row of ... | 05/22/2007 |
| 7212407 | Electrical power converter method and system employing multiple output converters A support may receive one or more power electronic circuits. The support may aid in removing heat from the circuits through fluid circulating through the support. The support, in conjunction with other packaging features may form a shield from both external EMI/RFI ... | 05/01/2007 |
| 7212036 | Driving apparatus of H bridge circuit and protection method of the same In order to protect semiconductor switching-devices employed in an H bridge circuit against an over-voltage without using a special protection circuit, a control circuit outputs a control signal to a driving circuit for driving the H bridge circuit in order to turn ... | 05/01/2007 |
| 7187548 | Power converter having improved fluid cooling A thermal support may receive one or more power electronic circuits. The support may aid in removing heat from the circuits through fluid circulating through the support, which may be controlled in a closed-loop manner. Interfacing between circuits, circuit mounting... | 03/06/2007 |
| 7187568 | Power converter having improved terminal structure A terminal structure for power electronics circuits reduces the need for a DC bus and thereby the incidence of parasitic inductance. The structure is secured to a support that may receive one or more power electronic circuits. The support may aid in removing heat fr... | 03/06/2007 |
| 7177153 | Vehicle drive module having improved cooling configuration An electric vehicle drive includes a thermal support may receive one or more power electronic circuits. The support may aid in removing heat from the circuits through fluid circulating through the support. Power electronic circuits are thermally matched, such as bet... | 02/13/2007 |
| 7142434 | Vehicle drive module having improved EMI shielding EMI shielding in an electric vehicle drive is provided for power electronics circuits and the like via a direct-mount reference plane support and shielding structure. The thermal support may receive one or more power electronic circuits. The support may aid in remov... | 11/28/2006 |
| 7098562 | Ambidextrous electronic window lift motor A motor assembly 30 includes an electric motor 32 having a rotatable shaft 40, the shaft 40 having a worm 38; and a gear unit 33 operatively associated with the motor, the gear unit has first and second opposing ends. The ge... | 08/29/2006 |
| 7095612 | Cooled electrical terminal assembly and device incorporating same A terminal structure provides interfacing with power electronics circuitry and external circuitry. The thermal support may receive one or more power electronic circuits. The support may aid in removing heat from the terminal structure and the circuits through fluid ... | 08/22/2006 |
| 7084604 | Speed sensorless control of an induction machine using a PWM inverter with output LC filter A method of controlling of an induction machine using an inverter is disclosed with output LC filter. The method includes determining an inverter output current vector (iA), determining an inverter output voltage vector (uA), and ... | 08/01/2006 |
| 7061775 | Power converter having improved EMI shielding EMI shielding is provided for power electronics circuits and the like via a direct-mount reference plane support and shielding structure. The thermal support may receive one or more power electronic circuits. The support may aid in removing heat from the circuits th... | 06/13/2006 |
| 7032695 | Vehicle drive module having improved terminal design A terminal structure for vehicle drive power electronics circuits reduces the need for a DC bus and thereby the incidence of parasitic inductance. The structure is secured to a support that may receive one or more power electronic circuits. The support may aid in re... | 04/25/2006 |
| 7026780 | Method for stabilizing the movement of an articulated chain of a chain block, especially to prevent the formation of a resonance oscillation of the chain, and a chain block apparatus The invention concerns a method for stabilizing the motion of an articulated chain of a chain block, especially to prevent the formation of resonance oscillation of the chain, in which an articulated chain is led across a polygonal chain wheel with non-uniform pitch... | 04/11/2006 |
| 7015673 | Method and apparatus for reducing generated heat in three-phase motors driving air circulation fans in large industrial refrigerators and freezers A method and apparatus is disclosed for reducing the heat generated by three-phase motors operating under load in cooled chambers such as industrial walk-in refrigerators and freezers. Specific control elements are introduced into the three power conductors connecte... | 03/21/2006 |
| 7016192 | Electrical power converter method and system employing multiple-output converters A support may receive one or more power electronic circuits. The support may aid in removing heat from the circuits through fluid circulating through the support. The support, in conjunction with other packaging features may form a shield from both external EMI/RFI ... | 03/21/2006 |
| 6972957 | Modular power converter having fluid cooled support A support may receive one or more power electronic circuits. The support may aid in removing heat from the circuits through fluid circulating through the support. The support, in conjunction with other packaging features may form a shield from both external EMI/RFI ... | 12/06/2005 |
| 6965514 | Fluid cooled vehicle drive module An electric vehicle drive includes a support may receive one or more power electronic circuits. The support may aid in removing heat from the circuits through fluid circulating through the support. The support, in conjunction with other packaging features may form a... | 11/15/2005 |
| 6940715 | Modular power converter having fluid cooled support A support may receive one or more power electronic circuits. The support may aid in removing heat from the circuits through fluid circulating through the support. The support, in conjunction with other packaging features may form a shield from both external EMI/RFI ... | 09/06/2005 |
| 6909607 | Thermally matched fluid cooled power converter A thermal support may receive one or more power electronic circuits. The support may aid in removing heat from the circuits through fluid circulating through the support. Power electronic circuits are thermally matched, such as between component layers and between t... | 06/21/2005 |
| 6543588 | Integrated retarder and accessory device The invention comprises a retarder system for use with road vehicles. The retarder system can combine an electromagnetic retarder with up to four functions: 1) a brushless DC alternator; 2) a brushless DC starter; 3) an active damper that replaces the veh... | 04/08/2003 |
| 6313594 | Partition wall system having a drive mechanism, and drive system for a partition wall system A drive system for a partition wall system composed of several individual components which are horizontally movable via rollers or appropriate media at or in a guide rail mounted to a ceiling in a way or technique in which the individual components presen... | 11/06/2001 |
| 6107759 | Multi-function actuation apparatus A multi-function actuation apparatus includes an electromagnetic device and a rotatable member which rotates in response to activation of the electromagnetic device. The rotatable member provides a first actuation force to actuate a first function and act... | 08/22/2000 |
| 6034491 | Universal fixture having shared drive assembly The present invention relates to an automatically reconfigurable contour checking fixture for comparing a component to a programmed contour. The fixture comprises a horizontal support table, having a length and width, wherein a drive rack runs along its l... | 03/07/2000 |
| 5962996 | Inverter apparatus In an inverter apparatus for converting a direct current to an intermittent current by a converter configured by parallel-connected plural pairs of serially-coupled switching elements, resistance loads are connected across output terminals of the converte... | 10/05/1999 |
| 5949206 | Multi-functional apparatus employing an intermittent motion mechanism A multi-functional apparatus employs an intermittent motion mechanism. An electromagnetic device selectively causes movement of the intermittent motion mechanism thereby moving a mechanical device coupled thereto. In another aspect of the present inventio... | 09/07/1999 |
| 5920158 | Multi-functional vehicle apparatus A multi-functional automotive vehicle apparatus comprising: a rotatable member; an electromagnetic device operable to selectively rotate said rotatable member; a first motion transmitting member selectively moved in response to rotation of said rotatable ... | 07/06/1999 |
| 5920159 | Multi-functional apparatus employing a flexible drive element for selectively actuating multiple output systems In accordance with the present invention, the preferred embodiment of a multi-functional apparatus employing a flexible drive element for selectively actuating multiple output includes an electromagnetic device and a flexible drive element with a pluralit... | 07/06/1999 |
| 5905345 | Multi-functional apparatus employing an intermittent motion mechanism A multi-functional apparatus employs an intermittent motion mechanism. An electromagnetic device selectively causes movement of the intermittent motion mechanism thereby moving a mechanical device coupled thereto. In another aspect of the present inventio... | 05/18/1999 |
| 5866995 | Auxiliary system for a motor vehicle An auxiliary system for a motor vehicle including at least two intermittently driven auxiliary devices, a single electric motor for driving the at least two auxiliary devices, a free wheel arrangement for operatively connecting the at least two auxiliary ... | 02/02/1999 |
| 5804931 | Wall partition system and a device and metod for the operation of a wall partition system A wall partition system and a device and method to automatically move partition panels, the position of which can be changed by a drive motor. Because the device for the automatic movement of the partition runs on a separate pair of rails, such a device c... | 09/08/1998 |
| 5644200 | Driving electrical machine speed controlled power combined system and device A combined driving structure is made up of an engine and an electrical machine. The engine is connected to the electrical machine through a clutch which allows the electrical machine to be used as a starting motor for the battery, and when the engine is s... | 07/01/1997 |
| 5495151 | Electronic sound generator with mechanical movement feature A modular apparatus is provided for imparting movement and selected sound to an ornament. The apparatus includes a mechanical movement module and a melody/voice module. The mechanical movement module includes a drive motor, gear assembly and cooperating p... | 02/27/1996 |
| 5357177 | Electrical adjustment device An electrical adjustment device, in particular an electrical chain transfer device for bicycles is disclosed, comprising an adjusting element, a drive device for the adjusting element, a control unit for controlling the drive device and a presetting devic... | 10/18/1994 |
| 5345153 | Ornamental closure An ornamental closure which opens to a scene and includes animated scenes moved into view from within the closure. Mechanisms and electrical circuitry provide the power to operate the closure and to provide music during operation. A plurality of such clos... | 09/06/1994 |
| 5341453 | Apparatus and methods for realistic control of DC hobby motors and lamps The specification describes a controller apparatus for a DC motor and a lamp having a filament electrically connected in parallel with the DC motor, comprising: (a) an output driver circuit for generating a DC power signal, where the DC power signal energ... | 08/23/1994 |
| 4851703 | Electro/hydraulic power pack The power pack includes a permanent magnet d.c. motor energizable by a battery and having a rotatable shaft. The shaft is operable to rotate both (1) an alternator for producing a.c. voltage for use by electrical utilization devices and (2) a hydraulic pu... | 07/25/1989 |
| 4827148 | Vehicle reverse control device An improved vehicle reverse control system having a power circuit for a starter motor for starting an engine. The circuit may include a control element for controlling the starter motor, in combination with separate control elements for starting the engin... | 05/02/1989 |
