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8803464 Fan speed control circuit  
A fan speed control circuit is provided. The circuit includes a control chip. The control chip stores a relationship table recording a number of duty cycle intervals and a number of rotational...
8424143 Electric toothbrush  
An electric toothbrush is disclosed. The toothbrush includes a housing; a brush; an electric motor for driving the brush; a power supply for providing the electric power required for operation of...
8384321 Motor, apparatus for controlling motor, and method for starting motor  
When it is determined that a rotor is initially in a stationary state, a current vector is applied to a coil by a vector control method so as to rotate the rotor in a forward direction from a...
8278848 Image forming apparatus and method of controlling motors thereof  
An image forming apparatus includes a plurality of motors, a controller which generates control signals to control the plurality of motors and output the control signals, and a plurality of motor...
8093851 Fan module and system  
A fan module, especially a fan module which may reduce a rotating speed of a fan automatically when an object with static electricity gets into the fan is provided. The fan module includes a...
7852021 Method and apparatus for minimizing forces on a web  
A method of controlling a web in, for example, a web cutter that minimizes the destructive forces that are experienced by the web. The method includes providing a motor system for driving a web...
7834566 Generic motor control system  
A method for controlling the operation of a motor utilizing a generic motor control module. The method includes sampling at least one motor operating criterion during operation of the motor and...
7746011 Vehicle seat, in particular a motor-vehicle seat  
The invention relates to a vehicle seat, in particular for a motor vehicle, and equipped with a central control unit, motors, peripheral motor control devices each associated to one motor and...
7672760 Searchlight  
A searchlight (3) on board a vessel (1) arranged for illuminating a point (2p) and maintain said point (2p) illuminated regardless of the movements of said vessel (1).
7230393 Motor control apparatus and motor control method  
In response to detection of a skid of drive wheels based on an increase in angular acceleration α of a rotating shaft of a motor, the control procedure of the invention refers to a map...
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...
7095188 Serial fan set and rotation speed-matching curve generation method thereof  
A serial fan set and rotation speed-matching curve generation method thereof are provided. The serial fan set comprises a rotation speed control module, a first fan and a second fan, in which the...
7067996 Open-and-close control system for openable apparatus  
In an automotive power window system, a controller detects positions of a window glass that moves through driving operation of a motor during the closing operation of a window. The controller...
7023152 Driving control device for actuator  
A driving control device for an actuator comprises a driving device to drive an actuator having an electric motor (30) and a driving control device (50) to control the rotation of the electric...
6844691 Ventilator having an abnormal operation indication device  
A ventilator having an abnormal operation indication device includes a power supply circuit, a central processing unit, a fan motor, and a load sensing circuit. Thus, the load sensing circuit...
6815920 Motor driver and system with phase-spaced redundancy  
A controller for a motor is provided. The motor includes N redundant M-phase rotor/stator combinations (where N and M are both integers greater than 1). The controller includes N driver circuits...
6737828 Washing machine motor drive device  
A washing machine motor drive device drives a motor using an inverter circuit, which implements a constant torque control through a change in the torque-revolution speed characteristic of the...
6734644 Control method for wiper apparatus  
A method (and apparatus) includes that a duty ratio of a driving voltage output to each wiper motor be required to be set according to several conditions. That is, while each wiper blade is moved...
6674256 Battery powered, joystick controlled folding wheelchair  
A battery powered, joystick controlled wheelchair includes a battery by which a supply of power can be provided, a joystick by which voltages proportionate to degrees of lean from a neutral...
6600988 Vehicle trajectory control system and method  
A method for controlling a powertrain of a vehicle is described. The method determines a desired vehicle condition based on three driver actuated elements. In a preferred embodiment the first...
6402260 Vehicle anti-lock brake control system  
A rotational speed of an electric motor 12 is memorized at a memory unit 21 as a set rotational speed for allowing a minimum required volume of brake fluid to be discharged from the pumps in a...
6191547 Focus control for search lights  
The focus angle of a search light mounted on a helicopter or other platform is narrowed or widened by rotating a bidirectional focus control cam in a clockwise or counterclockwise direction as...
5629591 High-availability multicurrent power supply system for the traction unit of a railway locomotive  
A system for powering a multicurrent locomotive having 2N motors where N is greater than or equal to 2, the system comprising 2N pairs of voltage converters respectively associated with the 2N...
5270621 Procedure controlling the motor of a crane  
The present invention relates to a procedure for selecting the mode of controlling the motor of a crane, or an equivalent lifting apparatus, when at least two alternative modes of controlling the...
5134346 Apparatus for driving a spindle of an electroerosive machine  
The driving apparatus for the rotation of the spindle or the work piece pallet of an electroerosive machining device comprises two electric motors which drive e.g. the spindle to a rotational...
4918360 Electric-driving device for openable members  
An electric driving device for openable members in which an openable member is opened and closed by rotation of driving shafts provided on right and left sides. The device includes a motor which...
4767940 Electronic sensing and control circuit  
An electronic sensing and control circuit is provided which includes a sensing plate and means for charging the sensing plate to a value dependent upon the capacitance existing between the sensing...
4766356 Device for opening and closing a vehicle top  
A device for opening and closing a vehicle top by rotations of drive shafts rotatably provided with both right and left sides of the vehicle, comprises two individual motors which actuate the...
4518902 Plugging electrical braking control circuit  
The invention pertains to a control system (46) for controlling the supply of power to a motor (12) to produce plugging electrical braking and current limit control, including a circuit (60) for...
4471273 Dual-motor control apparatus  
The invention pertains to a control circuit (10) for controlling the speed of a pair of motors (12,14), including a pair of switching elements (68,74) coupling power to the motors (12,14), a pair...
4364047 Control lever switch  
A control lever switch for providing steplessly adjustable control values, e.g. directional commands, for a plurality of outputs is based upon the provision of a number of electrodes in a spaced...
4323829 Capacitive sensor control system  
An electronic control system for controlling the operation of electromotive apparatus utilizes a capacitive sensor for sensing human touch and producing a command signal whose magnitude...
4295080 System for controlling rotational direction switchover and for variably controlling rotational speed of motor  
A system for controlling rotational direction switchover and for variably controlling the rotational speed of a motor comprises a circuit for switching over the rotational direction of the motor,...
4227126 Shaft rotation interlock system for film editing tables and the like  
There is disclosed apparatus suitable for use in conjunction with film editing tables or other devices requiring precise control over shaft rotation speed, that is, apparatus for interlocking two...
4012134 Bidirectional web medium drive  
A bidirectional web medium drive for moving a web of material such as a roll of microfilm between two reels consisting of a pair of reversible motors coupled through irreversible drives to...
3979649 Remote searchlight control system  
A remote control system for controlling the azimuth and altitude of a searchlight and also a control for selecting one of two modes of operation, either spot or flood, of the searchlight. The...
3965402 Headrest proportional control for motorized wheelchair  
A head controlled mechanism for the proportional control of a driven devi A mechanism is provided whereby a control signal is generated proportional to the movement of the head of an operator to...
3955129 Arrangement for controlling simultaneously several electric toys by a single circuit  
A system for individually controlling simultaneously several electric model trains on a common track in which one of the trains is controlled in speed and direction by a voltage supply which...
3917929 Systems and methods for solving simultaneous equation  
An electrical model of a plurality of simultaneous equations, such as equations representing a dynamic propulsion system, is disclosed as including a plurality of transformers generally greater in...
3896891 MODULAR MOTORIZED WHEEL CHAIR  
The specification discloses a motorized wheelchair which can be quickly and easily disassembled into separate lightweight components. The separate components can be conveniently stacked to...
3798520 REVERSING CONTROL SYSTEM FOR ELECTRICALLY POWERED VEHICLES  
A control system for effecting reversal of electrically powered vehicles, typically heavy duty off-road type work vehicles having electric motor driven wheels, characterized as follows: (1) a...
3792328 D.C. MOTOR SPEED CONTROL  
A speed control for a D.C. motor has a resistance connectable in series with an energy source and the motor armature for starting the motor, a series of voltage dropping diodes connectable in...
3749192 COLLAPSIBLE WHEEL CHAIR  
A collapsible wheel chair comprises: A. a base carrying wheel means, B. a seat unit, and C. there being tubular shaft means carried by the base and seat unit to provide a resiliently yieldable...
3553546 PULSE CONTROL NEUTRALIZATION SYSTEM  
3448361 SELECTIVE-FREQUENCY POWERLINE LOAD CONTROL  
3384764 Control signal transmitter including complementary trigger and oscillator transistors  
3378777 Motor control circuit with phasing means for preventing erratic motor operation  
3355643 Plural remote controllers for plural motors using a common power connection  
3315613 Remote control for model train system  
3316503 Digital phase-modulated generator  

Matches 1 - 50 out of 59 1 2 >