Did You Know...
...that Robert Adler has the dubious distinction of being the Father of the Couch Potato? Back in 1955 Adler was employed by what was then Zenith Radio Corp., where he was charged to invent something that would allow viewers to turn down the TV volume without leaving their chairs. After a series of flops (such as a wired contraption that people tripped over), Adler hit on the idea of using sound waves. Thus the Remote Control was born...
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| Number | Title | Issue Date |
| 7439695 | Mechanical braking system for use on a vehicle having an electric propulsion system and automatic retard speed regulation A mechanical braking system is provided for a vehicle having an electric propulsion system which is utilized for retard speed regulation. While the retard speed regulation is normally performed via electric braking, in some conditions the electric braking is not abl... | 10/21/2008 |
| 7325498 | Hybrid energy off highway vehicle propulsion circuit A system and method for retrofitting a propulsion circuit of an existing Off Highway Vehicle to enable the propulsion circuit to operate as a hybrid energy Off Highway Vehicle propulsion circuit. The hybrid propulsion circuit includes a primary power source, and a t... | 02/05/2008 |
| 7268507 | Motor controller A DC power supply, a DC motor driven by DC voltage outputted from the DC power supply, and a control unit outputting a drive control signal to drive the DC motor are provided. A motor drive switch is provided between the DC power supply and the DC motor, and a brake... | 09/11/2007 |
| 7098616 | Control device for a motor unit of a food processor A control device includes a control module controlling a polarity switching unit connected electrically to a motor unit of a food processor to provide a first current path for an input power signal through the motor unit when the control module is operated in a proc... | 08/29/2006 |
| 7046603 | Information storage apparatus There is disclosed an information storage apparatus in which even when a remaining power of a battery or a galvanic cell is low, an information recording medium can safely be removed. An MPU, a spindle motor driver, and a spindle motor constitute a decelerator for d... | 05/16/2006 |
| 7019483 | Devices for position-controlled stopping of rotating components with position-controlled drive mechanisms in the case of voltage loss The position-controlled stopping of rotating components of shaftless drive mechanisms, in the case of a loss of voltage, is accomplished by the provision of an external connectable network. That external connectable network supplies the process power which is missin... | 03/28/2006 |
| 6972532 | Controlled motor coast in media handling system By controlling all motors so that they all decelerate at substantially the same rate, buckling of media in a media handling system is substantially eliminated on shutdown. Preferably, the deceleration rate of the highest inertia motor is used as the common decelerat... | 12/06/2005 |
| 6741050 | Method of controlling and switching for braking an electronically commutated electrical motor A control method and a switching circuit for braking an electronically commutated electrical motor, wherein operation is in a phase period (T) of an inverter relative to at lest one winding, sequentially, both in a motoring mode and a generating operating mode using... | 05/25/2004 |
| 6580244 | Active damping and backlash control for servo systems Two motors are used to provide motion control in a transport drive system. A primary motor, or a primary and secondary motor, provides primary power for accelerated motion. PWM signals are used to drive the motors according to predetermined fixed function... | 06/17/2003 |
| 5894204 | Spindle motor control method and disk unit A spindle motor control method stops a spindle motor which rotates in a forward direction in response to a rotation signal. The spindle motor control method includes two steps. First, a brake signal is supplied to the spindle motor for rotating the spindl... | 04/13/1999 |
| 5757148 | Method of and apparatus for stopping a motor having magnetic bearings A motor having windings normally energizable by electric power from an AC power supply is stopped in case of an emergency such as a failure of the AC power supply. The motor has a rotor rotatably supported by magnetic bearings out of contact therewith. Th... | 05/26/1998 |
| 5517092 | Rotation speed sensing in a drive arrangement for a motor vehicle In a drive arrangement of a motor vehicle in which the wheels of the motor vehicle are driven by separate electric motors and the electric motors are powered via a d.c. voltage intermediate circuit by a generator arrangement driven by an internal combusti... | 05/14/1996 |
| 5285139 | Method and device for controlling motor in a powered seat Method and device for controlling a motor in a powered seat, wherein one of normal and reverse drive signals from manual or auto switch is detected by a central processing unit, which in turn provides a first period of time defined between one point when ... | 02/08/1994 |
| 5196769 | Motor control device The present invention relates to a motor control device using an inverter or inverters, in particular, it relates to a motor control device suitable for the prevention of inertial rotation of a motor or motors or for the maintenance of synchronized operat... | 03/23/1993 |
| 5189355 | Interactive rotary controller system with tactile feedback An apparatus for controlling conditions in response to an operator input, the apparatus including a rotary knob coupled to the shaft of the rotor of a stepper motor having first and second stator windings, in quadrature, with each winding being center tap... | 02/23/1993 |
| 4600865 | Transportation apparatus Transportation apparatus, such as escalators and moving walks, having controlled stopping characteristics. Deceleration is directly regulated via a deceleration servo loop which provides a current reference signal for an inner current loop. Brake current ... | 07/15/1986 |
| 4518899 | Process and apparatus for correlating startup and cutoff periods of different induction motors with one another In textile machinery wherein two or more loads--such as transport rollers of a tension frame and a bank of spindles carrying take-up spools--are driven by respective three-phase motors of the asynchronous (induction) type at speeds which are different fro... | 05/21/1985 |
| 4460853 | Gyroscope wheel dynamic braking and sequence inhibit circuit An inertial measuring unit gyroscope wheel dynamic braking and sequence inhibiting circuit is disclosed. The circuit comprises a first counter for counting a specified time interval and digital logic circuitry for applying an in-phase signal to the phases... | 07/17/1984 |
| 4450388 | Dynamic braking of direct current motors A dynamic braking system for a D.C. traction motor which is driven from an asymmetric bridge rectifier having freewheel diodes to permit circulation of motor generated current. The system employs field reversal to ensure a generated (braking) current dire... | 05/22/1984 |
| 4393338 | Vehicle propulsion motor control apparatus A solid-state direct current motor control apparatus including a programmed microprocessor operative with a plurality of series motors to determine the selection of a power mode of operation, a brake mode of operation and a coast mode of operation, with a... | 07/12/1983 |
| 4390821 | Device for changing the relative angular positions of operating shafts of a group electric drive An electric group drive having synchronous motors which are fed from a static operating converter has a second converter for use in varying the relative angle position of the motors. Provision is made for using the second converter as a start-up and braki... | 06/28/1983 |
| 4309642 | Device for feeding a wire electrode Device for feeding a consumable wire electrode. Two feeding units are mounted in tandem. Each of the feeding units is provided with a pair of rolls and coupled to a direct current motor driving one of the rolls in the pair. The two motors are connected in... | 01/05/1982 |
| 4259622 | Circuit arrangement for driving and for independent recuperation braking of a vehicle A circuit arrangement for the driving and for independent recuperation braking of a vehicle provided with DC compound traction motors, a DC feeding circuit, and pulse control for obtaining braking with so-called clean recuperation. The series windings of ... | 03/31/1981 |
| 4079296 | Variable speed AC motor control circuit A microfilm reader has a film transport mechanism driven by separate forward and reverse motors. During operation, the driven one of the motors receives full AC power for driving it at high speed. During low speed operation, the driven motor receives part... | 03/14/1978 |
| 4034272 | Moving screen arrangement A moving screen display device includes a display web supported on a pair of reels, and a reversible motor to drive each reel. The motors are selectively driven so that if one motor is driving one reel in a take-up direction, the other motor is driven in ... | 07/05/1977 |
