Did You Know...
...Daniel Webster invented a "bull plow" to pull out tree stumps. It didn't catch on because it was huge and required four oxen to pull it!
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| Number | Title | Issue Date |
| 7741794 | Load drive control circuit A load drive control circuit for controlling a load that includes connection terminals. The load drive control circuit includes bridge circuits respectively connected to the connection terminals of the load. Each bridge circuit includes two semiconductor elements, w... | 06/22/2010 |
| 7425805 | Three-in-one control device for a ceiling fan A three-in-one control device for a ceiling fan includes a signal receiving module, which is able to receive segmented controlled signals, stepless controlled signals and wireless controlled signals respectively, for transmitting controlled signals to a micro comput... | 09/16/2008 |
| 7352141 | Device and method to monitor an apparatus An apparatus for monitoring and control of one or more electric motors, including a motor controller, equipped with a soft starter. The soft starter includes memory for storing operations and event data, as well as a human-machine interface for making the event info... | 04/01/2008 |
| 7211722 | Structures including synchronously deployable frame members and methods of deploying the same A lightweight structure for space application is deployable from a compact bundle of interconnected struts into a plurality of tiled substantially rectangular bays. Each bay preferably comprises four or six hinged strut members having substantially rectangular cross... | 05/01/2007 |
| 7194657 | Control and power supply system for at least two airplane seats A control and power supply system for the actuators of at least two airplane seats, which are preferably adjacent. The actuators of an airplane seat and the actuators of at least one other airplane seat are connected to a common control unit by a data link device. E... | 03/20/2007 |
| 7145299 | Power window control system A master controller installed in a master controller box and slave controllers installed in car doors to open and close window glasses of a car are connected by a single wire to each of slave controllers for enabling to send control signals through such a single wir... | 12/05/2006 |
| 7126296 | System and method for analog control of directional motors and other loads A directional load is capable of operating in multiple directions. For example, a directional motor may rotate in clockwise and counterclockwise directions. A directional load driver generates output signals causing the directional load to operate in one of the dire... | 10/24/2006 |
| 7122987 | Safety garage door A safety garage door apparatus includes a garage door, two tracks, a controller, a linking device and a detecting device. Two tracks are installed on two sides of the garage door, respectively. The controller includes a motor, a driving device connected to the motor... | 10/17/2006 |
| 7116071 | Power tool and motor controller A method and apparatus to automatically reverse the motor of a power tool, such as a dispensing gun or similar tool. In some constructions, a controller automatically reverses the direction of plunger movement and removes the plunger from contact with the back wall ... | 10/03/2006 |
| 7098554 | Steering shaft locking device A steering shaft locking device capable of performing a locking operation in an optimum manner. The steering shaft locking device includes a motor to which voltage is applied to generate a drive force. A locking bar is moved by the drive force of an actuator so as t... | 08/29/2006 |
| 7057905 | Method and apparatus for power conversion having a four-quadrant output A power converter (10) operating in all four voltage-current quadrants includes an input voltage source (14), an output current independent of an output voltage and a switching arrangement (12, 16, 18, and 20) enabling an output terminal ... | 06/06/2006 |
| 7042363 | Methods and apparatus for producing a three-state single wire control Systems, methods and devices are described that provide a three-state control signal across a single electrical conductor. A three-position switch provides an output signal that selects between the first reference voltage, a second reference voltage and an intermedi... | 05/09/2006 |
| 7023156 | Reversible motor Reversible motor including a stator having two windings (a–a′, b–b′), a start apparatus (c–c′) connected to one of the two windings (a–a′, b–b′) in series, switches (310,330,350) for providing power to the two windings selectively, wherein... | 04/04/2006 |
| 6998803 | Enhanced performance for DC motor drive switching An improved drive circuit is provided for a DC motor. The drive circuit includes: a DC power source; a relay having a normally open contact and a normally closed contact; a DC motor electrically connected through the normally open contact of the relay to the power s... | 02/14/2006 |
| 6836088 | Motor driving circuit A motor driving circuit includes a window opening switch, a window closing switch, an auto switch, a motor which opens and closes a window by driving rotating operation, a charging circuit which charges one capacitance element by a first CR time constant upon operat... | 12/28/2004 |
| 6781342 | System and method for soft starting a three phase motor A three phase motor starting system is provided to reduce the in-rush current to the motor in order to obtain a soft start of the motor. The soft start of the motor equates to reduced impact forces on motor parts and device components connected to the motor during s... | 08/24/2004 |
| 6771034 | Children's ride-on vehicle with electronic speed control A children's ride-on vehicle having an electronic speed controller adapted to regulate at least one of the timing and rate of application of a selected rotational input. The vehicle includes a body with a seat, a steering mechanism positioned for operation by a chil... | 08/03/2004 |
| 6657406 | Soft start control method for a motor-driven actuator A method of operation for a motor-driven worm gear actuator coupled to a load device energizes the motor in a series of pulses during an initial period of motor operation when reversal of the motor is commanded. The pulsed energization produces a slow ini... | 12/02/2003 |
| 6646399 | Controller for shutting apparatus A controller for a shutter moved between an opened position and a closed position. A plurality of location ranges is defined between the opened position and the closed position. The controller detects the current moving speed of the shutter in each range,... | 11/11/2003 |
| 6609821 | Blender base with food processor capabilities A blender base that may be used with a food processor container, a blender container, and a single use beverage container. The blender container includes a novel blade unit having a food processor-style blade and blender type blades. Programs with preprog... | 08/26/2003 |
| 6605911 | Drive device and method for moving a vehicle part A process for adjusting a motor vehicle part between at least two positions and a drive device for executing this process. The motor vehicle part is driven by an electric motor. A pulse signal is generated according to the rotary motion of the electric mo... | 08/12/2003 |
| 6486630 | Power window apparatus capable of leaving windows open for a predetermined time when automobile falls into water A power window apparatus is provided that, even if a CPU (IC2) causes malfunction or becomes uncontrollable upon submergence, can prevent windows from performing unexpected operations and enables the windows to be opened without fail if desired. The power... | 11/26/2002 |
| 6452353 | System for detection of obstructions in a motorized door system Method of detecting obstructions encountered by a motorized door. The method includes providing a signal processor with one or more signals indicative of a predetermined door trajectory profile for at least a segment of a stroke of the door, the door traj... | 09/17/2002 |
| 6445152 | Door control system Method of controlling a motorized door by offloading the burden to a separate motion control processor. The method includes generating, in a central processor for the door, one or more signals indicative of a predetermined door speed profile for a stroke ... | 09/03/2002 |
| 6437530 | Method for electronic surveillance and control of the opening and closing procedure for electrically operated units A method for the electronic monitoring and control of the opening and closing operation of electrically operated aggregates, particularly of window lifters and sunroofs in motor vehicles, is described. A regulating unit of the aggregate is connected to a ... | 08/20/2002 |
| 6335601 | Wiper control device A wiper control device suitable used for controlling the wiper apparatus possible to solve a difference in the wiping range caused by the difference in the operation speed (inertial force) of the wiper blade by using the wiper linkage provided with an ecc... | 01/01/2002 |
| 6316895 | Multi-speed motor controller Three phase sinusoidal waveforms generated from a DC bus voltage using Space Vector PWM method are used to obtain multi-speeds from a 3 Phase AC Induction motor. A novel algorithm generates the switching signals from a micro controller to drive the power ... | 11/13/2001 |
| 6164854 | Automatic cutting device apparatus and method including a reversible motor In an embodiment, an automatic cutting device specifically defines the automatic cutting device such that the clutch includes a transmission drive gear being driven by the motor and having a first saw-tooth gear, and a transmission follower gear for trans... | 12/26/2000 |
| 6163080 | Anti-pinching system based on modification of the light conductivity of an optical fibre for automatic car windows A system which takes direct action to reverse the rotation of the window driving motor includes an optical fiber conductor arranged inside a substantially prismatic profile forming loops at the points where said conductor enters and exits from a series of... | 12/19/2000 |
| 6120262 | Electronic device control system A control system for a device powered by an AC power source is presented. The control system includes a fixed controller adapted to be wall-mounted and powered by the AC power source. The fixed controller is also adapted to transmit control signals to the... | 09/19/2000 |
| 6114820 | Power window apparatus having safety unit A power window apparatus is provided for detecting pinching in accordance with the opened/closed position of the window and a state of rotation of a motor, the apparatus having a position sensor which detects a safety-control suspension region of the wind... | 09/05/2000 |
| 5889377 | Drapery actuator A drapery actuator to open and close draperies and the like, comprising a housing and a drive pulley supported by the housing to engage a drapery cord. A motor is supported by the housing for reversibility rotating the drive pulley to move the drapery cor... | 03/30/1999 |
| 5818183 | Blind tilt controller A device for controlling the tilt angle of window blind blades having a motor with an output shaft and a slip clutch coupling the output shaft to a tilt control mechanism. A receiver and demodulator receives a modulated infra red carrier signal modulated ... | 10/06/1998 |
| 5764008 | Drive device for closing parts in motor vehicles Drive device for closing parts in motor vehicles, especially sliding roofs, sliding/lifting roofs, and the like, with a drive motor, a sensor for determining the actual rpm of the drive motor and a clamping protection means for disengaging or for reversin... | 06/09/1998 |
| 5714852 | Three state switch detection using current sensing A three state switch detection circuit converts a three state input to a two-bit binary output readable by a micro-controller or other digital logic. The circuit utilized complementary NPN and PNP transistors having coupled emitters and coupled bases conn... | 02/03/1998 |
| 5552683 | Method of controlling a reversible electric device A reversible electric device M is connected in an H bridge with a first side formed by first top and bottom switches and a second side formed by second top and bottom switches. The current Im flowing in the device from the first side to the second side is... | 09/03/1996 |
| 5495155 | Device in a power delivery circuit An improved current sensing circuit is provided in, or for use with, a power delivery circuit having a current controlling device of the type which includes auxiliary current sensing terminals. The current sensing circuit is particularly useful in conjunc... | 02/27/1996 |
| 5402047 | Compact device for controlling a motor unit which displaces a screening element A device for controlling a motor unit which displaces a screening unit which includes a power supply with at least one controlled electronic switch designed to feed a regulated electrical output to the motor unit and a control loop with a circuit which de... | 03/28/1995 |
| 5394068 | Automatic initialization in a model railroad motor control system Electronic control circuits for model railroading including a reversing motor control circuit. An on-board electronic state machine indicates one at a time of a predetermined series of states including forward, neutral and reverse, and is clocked to the n... | 02/28/1995 |
| 5210475 | Current sensing circuit for use with a current controlling device in a power delivery circuit An improved current sensing circuit is provided in, or for use with, a power delivery circuit having a current controlling device of the type which includes auxiliary current sensing terminals. The current sensing circuit is particularly useful in conjunc... | 05/11/1993 |
