Class 318/65 - Motor-reversing

Subclass of Class 318 - Electricity: motive power systems
Definition: Subject matter in which means are provided for causing two
No. of patents: 39
Last issue date: 01/29/2008

Number	Title	Issue Date
7323842	Rotating electrical machine A rotating electrical machine has a housing with a shaft mounted rotatably in it. A rotor is fixed to the shaft and has a plurality of magnetic poles. A stator is positioned about the rotor and has a winding. A switch is mounted within the housing and has a first po...	01/29/2008
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
7157871	Intermittent drive control apparatus of motor Rotation of a capstan motor is detected by a frequency detector, and supplied to a CPU as a rotation detection signal CFG. The CPU derives a period of the rotation detection signal CFG, calculates an average rotational speed of the capstan motor on the basis of the ...	01/02/2007
6891344	Automatic opening and closing apparatus for vehicle The invention provides to make an automatic opening and closing apparatus for a vehicle to be thin. An outer rack is attached to an outer side of a stay fixed to a vehicle in such a manner as to freely move in an axial direction along the stay. A thickness of the st...	05/10/2005
6794837	Motor speed-based anti-pinch control apparatus and method with start-up transient detection and compensation A control apparatus and method for a panel movable between at least two positions by an electric motor having a rotatable armature. The control generates time periods for the rotation of the armature over a constant angular distance. An average time period is comput...	09/21/2004
6731092	Apparatus and method for initializing stepper motor A stepper motor is initialized so that the exciting signal is applied to coils with the step shifted by half of one electric cycle from the rebounding step being synchronized with the timing when the stopper piece is brought into contact with a fixed stopper. The re...	05/04/2004
6583591	Circuit for operating a plurality of bi-directional motors The present invention provides a circuit for operating a plurality of bi-directional motors, each motor having a pair of terminals disposed across the motor. The circuit includes a common half bridge for providing one of power and ground to one of the pai...	06/24/2003
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
6268707	Electric current supply device for traction engines of urban or suburban vehicles Device for supplying electric current to at least one series-excitation motor, characterized in that it includes a chopper comprising a midpoint (M) linked to the rotor of the motor and to which are connected at least one first controlled static switch wh...	07/31/2001
5965993	System for controlling the operation of reversible motor-speed reducer modules for adjusting in position elements of motor vehicle seat structure This system for controlling the operation of reversible motor-speed reducer modules for adjusting in position elements of a motor vehicle seat structure is characterized in that the motor-speed reducer modules (1,2) are connected in parallel to common sup...	10/12/1999
5936375	Method for energy storage for load hoisting machinery A method for energy storage and recovery for load hoisting equipment driven by an inverter controlled first induction motor and having a second inverter controlling a second induction motor which drives a flywheel whereby, utilizing rest power such as rev...	08/10/1999
5903113	Power output apparatus and method of controlling the same A power output apparatus (20) of the present invention includes a clutch motor (30), an assist motor (40), and a controller (80) for controlling the clutch motor (30) and the assist motor (40). The clutch motor (30) includes an outer rotor (32) linked wit...	05/11/1999
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
5869942	Noise suppression in relay-switched motors Noise suppression system for a relay-switched windshield wiper, wherein reversal of current to a motor driving the wiper causes the motor to reverse. Filters contained within the motor, together with filters and shielding located external to the motor, su...	02/09/1999
5712541	Method and apparatus for actuating synchronous motors The invention concerns a method and an apparatus for actuating a plurality of synchronous motors which are connected to a common power supply and which are respectively used for displacing an element between two limit positions and have a connection Y1 fo...	01/27/1998
5625268	Stepping motor drive unit A stepping motor drive circuit including a bridge circuit composed of energizing coils constituting a stepping motor and four transistors, and current value switching circuitry for selecting a value of current flow according to the rotation direction of t...	04/29/1997
5517091	Modular electrical system for device units A modular electrical system (10) supplies power to and controls a plurality of electric motors (M1, M2, M3, M4) associated with a plurality of drive units folding or extending rows in a telescopic seating system...	05/14/1996
5491391	Start up circuit for continuous sine-wave commutated brushless motors Automatic start up of a continuous sine-wave commutated, brushless, direct current motor in a predetermined direction is done by applying a ramped armature current to the direct current motor to generate an armature field. The resulting armature field is ...	02/13/1996
5453671	Electromotive actuator for a central door locking system of a motor vehicle The invention relates to an electromotive actuator with a housing for a central door locking system of a motor vehicle having a first slide adjustable by a first electric motor between two end positions. The first slide can be connected with a door lock o...	09/26/1995
5374878	Modular electrical system for drive units A modular electrical system (10) supplies power to and controls a plurality of electric motors (M1, M2, M3, M4) associated with a plurality of drive units folding or extending rows in a telescopic seating system...	12/20/1994
5315218	Motor controls An electrically actuated shifting mechanism includes a reversible rail select electric motor and a reversible in-gear electric motor. Three groups of switches are provided to effect one-at-a-time operation of the motors with a center group of switches bei...	05/24/1994
5239242	Motor direction contactor switching control Motor control systems having direction contacts for steering current through a motor are commonly associated with electrical industrial vehicles, such as lift trucks. Advantageously, the operation of the direction contacts should be optimized in order to ...	08/24/1993
5097187	Motor control apparatus for controlling motor for selectively driving two mechanisms A motor control apparatus for controlling a motor which selectively drives a first mechanism for moving a first object and a second mechanism for moving a second object. Both the first and second mechanisms having a backlash which occurs when the motor is...	03/17/1992
5004961	Window operator control A control for a window operator is operable to control incremental movement of a window. The control includes means for developing a command to selectively move the window in a direction to an open or closed position, and means for determining when a plur...	04/02/1991
4933613	Control for operating a plurality of window operators A control for a window operator is operable to control incremental movement of a window. The control includes means for developing a command to selectively move the window in a direction to an open or closed position, and means for determining when a plur...	06/12/1990
4494181	Circuit arrangement for determining the polarity and magnitude of the load current in a reversible d-c controller or chopper A circuit arrangement for determining the polarity and the magnitude of the load current in a reversible d-c controller includes a bridge circuit comprising two pairs of bridge arms connected to opposite terminals of the voltage supply bus. Each pair of b...	01/15/1985
4486694	Process for changing a running direction of an electromagnetically guided driverless vehicle A process for changing a running direction of an electromagnetically guided driverless vehicle is provided which process is applicable to the vehicles of both a single conduction wire guided type and a two conduction, wires guided type. The vehicle has ri...	12/04/1984
4405887	Drive circuit for a wiper device A drive circuit for a wiper device includes reversible driving motors for alternately driving a pair of wiper assemblies in first and second directions. Each driving circuit includes a switching means and a means for detecting both ends of the wiper blade...	09/20/1983
4379985	Bipolar driver with illegal code detector A bipolar driver controls the operation of a reversible polarity load such as a motor. The driver links one terminal of the motor with either a positive or a negative potential power supply in response to processor command signals comprising a combination...	04/12/1983
4369397	Motor control apparatus for a motorized vehicle, and method therefor A control arrangement for manually controlling speed and direction of devices such as electric motors typically where these drive the two driving wheels of a wheel chair, the control being achieved by having the radiant energy falling on several detectors...	01/18/1983
4363999	Electric propulsion and braking system for automotive vehicles An electric propulsion and braking system which includes a plurality of high-speed, dc commutatorless motors each coupled to a wheel of an automotive vehicle through an associated fixed-ratio mechanical transmission. Each motor includes a field winding, a...	12/14/1982
4358718	Centralized electric control device in particular for automobile vehicle latches This control device permits commanding a group of reversible motor-driven actuating devices to effect the movement of one thereof when moved mechanically. It comprises a detection circuit which detects the presence and polarity of an electromotive force a...	11/09/1982
4325015	Dual motor drive for machine tool A dual motor drive for the turntable of a numerically controlled machine tool in which separate forward and reverse drive motors geared to the turntable are used for eliminating the effect of backlash. Circuitry, including amplifiers, is interposed betwee...	04/13/1982
4288726	Permanent magnet motor control system A plurality of permanent magnet DC motors are grouped into two banks. One side of each motor in one bank is connected to a first common supply conductor while one side of each motor in the other bank is connected to a second common supply conductor. Indep...	09/08/1981
4284929	Ambulator control circuitry Control circuitry for producing signals to control motors which propel a ile platform for a standing paraplegic. Logic circuits connect a 3-axis joy stick controller to four permanent magnet DC motors mounted on the platform such that the platform follow...	08/18/1981
4174494	Electric motors control system This system for controlling the operation of several electric motors notably for blinds and similar devices comprises a plurality of decentralized control devices each associated with one motor and controlled from a central control means via a common cont...	11/13/1979
4044286	Control circuit for hospital bed Beds, such as hospital beds, in which at least some portion of the bed is movably actuated by an electric motor (or motors) are provided with a control circuit to determine proper energization of the motor from an AC power source. Since the AC signal from...	08/23/1977
3976531	Machine and method of operation thereof for producing non-woven "glued" carpets The present invention is concerned with a machine for producing non-woven "glued" carpets and particularly with operating mechanism for alternately pressing a "pile-yarn" sheet against one and then the other of a pair of opposed adhesive-carrying backing ...	08/24/1976
3932903	Guard including electrical controls and slidable underneath the bed Bed guard rotatable between elevated and lowered positions and slidable from the latter to a position underneath the bed. While elevated, it prevents accidental falling off, and when underneath, it allows facile patient management and movement of the bed ...	01/20/1976

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Class 318/65 - Motor-reversing