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7531978 |
System and method for controlling motion of electromechanical devices such as seats and opening elements of motor vehicles
A system for controlling a displacement drive of a motor vehicle includes a manually operable actuator movable over a fixed stroke between a first end position and a second end position. The...
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7489094 |
Method and apparatus for quiet fan speed control
An AC motor speed controller includes a plurality of capacitors that may be selectively switched, by means of controllably conductive switches, into series electrical connection with an AC motor...
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7477027 |
Method of removing foreign particles from heat transfer surfaces of heat sinks
An apparatus is provided and includes a power source, a system board on which an electrical component is installed, a heat sink including a plurality of heat transfer surfaces to contact the...
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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...
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7358695 |
Method for controlling fan
A method for controlling a fan is provided for adjusting the rotational speed of a fan. The method includes adjusting the rotational speed of the fan from a first mode value to a range of...
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7298107 |
Barrier operator controller with user adjustable force setpoint
A control unit for a moveable barrier, such as a garage door, includes a microcontroller connected to a motor speed detector, motor current sensor or a sensor for determining forces exerted on or...
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7245100 |
Multi-axis AC servo control system and method
A multiple axis servo control implements a multi-tasking PWM control unit to provide PWM signals for multiple axes in a single unit. A time slice mechanism provides axis selection signals based on...
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7228105 |
Field test chamber arrangement
A measurement arrangement for accurate and repeatable measurement of transmission and reception characteristics of a communication device. The arrangement comprises an at least partly conductive...
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7218069 |
Door opening/closing device
A first judging unit integrates an increase in a corrected current when the corrected current is in a predetermined increasing state and judges that a first condition is satisfied when an...
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7208907 |
System and method of restarting a switched reluctance motor after a rapid cycling of power
A system and method of restarting a switched reluctance motor after a cycling of power provided to the motor is provided that includes receiving at the motor a power-off signal followed by a...
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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...
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7095195 |
Motor and disk drive apparatus
In a motor and a disk drive apparatus in accordance with the present invention, a position detecting part 30 comprises a detection signal switching circuit 39 A, a noise elimination circuit 38 ...
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7023154 |
Train speed control using current and velocity sensing
A method for speed control for a motor of a locomotive of a model electric train is presented. A method in accordance with the present invention includes sensing an operating velocity of the motor...
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6944896 |
Line voltage compensation system for power chair
An apparatus, method and program product position a powered examination chair at a constant, desired speed despite fluctuations line voltage. A power signal supplied to an actuating motor of the...
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6870333 |
Method for operating asynchronous motors and corresponding device
Asynchronous motors are controlled by way of two- or three-phase controllers that include at least two pair of thyristors connected in antiparallel and fired at certain intervals. According to the...
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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...
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6731082 |
DC motor constant speed PWM control
A pulse width modulated (PWM) output signal controller circuit is provided for controlling operation of an electronically commutated, direct current (DC) motor. This DC motor may be used for...
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6696806 |
Method and apparatus for facilitating control of a movable barrier operator
A movable barrier operator ( 11 ) receives movement sensing signals from a sensor ( 13 ) and calculates corresponding speed of movement of a movable barrier. Such speed measurements lead to...
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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...
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6597135 |
Combination of resistor and PWM electronic device to control speed of a permanent magnet DC motor
A motor speed control system 10 includes a permanent magnet direct current electric motor 12. A first switch 14 is operatively associated with the motor. A resistive element 16 is provided...
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6469460 |
Portable wireless terminal having separated vibration embodying circuit for alerting a user of an incoming call
A wireless terminal including a custom integrated circuit for adjusting and applying the voltage of a particular pulse and a power supply for supplying power to operate an internal vibration...
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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...
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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...
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6414459 |
Method for influencing the electrical power of a load with a pulse width modulated signal
A method is proposed for influencing the electrical power of a load with the assistance of a pulse-width modulated signal, the latter including the requirement of a continuous turn-on signal. The...
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6326749 |
Motor rotation control device for optical disk player
A motor rotation control device for an optical disk player including a motor outputting rotation signals, a sensor for sensing the rotational direction and rotational state of the motor in response...
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6249097 |
Optimum motor speed control system
The method for controlling a motor driving a load holds the speed of the output shaft of the motor substantially constant as the torque imposed upon the shaft by the load varies, then regulates the...
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6211632 |
Direction control device for a ceiling fan
A direction control device for a ceiling fan is disclosed, which has a remote receiver arranged inside a canopy of the ceiling fan and a direction control circuit unit arranged in a switch box of...
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6157152 |
Motor drive system and power window system
A highly dependable motor drive system capable of driving a motor with certainty even in a submersion accident and preventing overcurrent from flowing to the motor on the occasion of switching the...
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6046557 |
Focusing controller for survey instrument
The present invention provides a focusing controller for a survey instrument, and the focusing controller comprises a sliding tube for retaining a focusing lens and movable in the direction of an...
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6025683 |
Motor control circuit for regulating a D.C. motor
A motor control chip (62) for asserting the control signals used to regulate the energization of the windings of a DC motor. The motor control chip includes a tachometer (94) that receives pulsed...
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5966071 |
Power window with detecting function of sticking of foreign matter
To improve the detection reliability in the detection of sticking of a foreign matter and minimize a sticking load, a power window is provided with a window frame sensor disposed along the inner...
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5901269 |
Speed regulating circuit for motor of power coping saw
A speed regulating circuit for a motor of a power coping saw includes a DC voltage circuit, a manual speed regulating circuit, a feedback controlling circuit and a motor driving circuit. The DC...
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5886417 |
Electrical power generating installation and method of operating same
An electric power generating installation has a plurality of generator/motor units, each of which has a motor for converting kinetic energy into turning torque, a generator connected mechanically...
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5774046 |
Power window apparatus with sensor failure detection
In a power window apparatus, an external force which develops at the time of catching foreign objects in a window is detected directly by a window frame sensor and indirectly by a motor load...
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5712550 |
Apparatus for controlling a power control element of a drive unit of a motor vehicle
An arrangement for driving a power control element of a drive unit of a motor vehicle is proposed and the arrangement has a full-bridge output stage. A direct-current motor is arranged in the...
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5675225 |
Interactive pet toy
A novel motor belt drive mechanism which rotates a mouse or other toys to amuse, occupy, and entertain pets. The device is battery powered with a switch which can be turned on and off to attract a...
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5587634 |
Human body actuated control apparatus and system for commercial sewing machines
An electronic control system and apparatus is provided for controlling the operation of an industrial machine, such as a sewing machine. A body actuated apparatus is mounted in a spaced apart...
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5572100 |
Semiconductive power unit for variable speed drive motor
A semiconductive power unit for controlling drive motor speed by controlling the power applied to the motor through a variable or switchable semiconductive control element, such as a Darlington...
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5526460 |
Impact wrench having speed control circuit
An impact wrench having a speed limiting control circuit to allow an operator of the wrench to controllably limit the maximum speed of the wrench to a predetermined value when a trigger thereof is...
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5512807 |
Electronic control device for a direct current electric motor having two supply terminals for a drive system operating in back-and-forth mode, and the application of such a device to a vehicle screen wiping system
A drive motor for a motor vehicle screen wiping apparatus operates with repeated reversals of its direction of rotation, and is controlled by a control circuit which is connected to a transistor...
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5489807 |
Domestic appliance for processing foods
The invention is directed to a domestic appliance for processing foods, with a basic device (1) accommodating an electric switch (6) and an electric motor (5), as well as electrical connecting...
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5448549 |
Process for stopping a rotating disc-shaped record medium
Process for stopping a record-shaped, rotating information medium, for example, a CD. CD-players, for example, are provided with a loading and unloading mechanism for the information medium, the...
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5321344 |
Control circuit for model railroads
A control circuit for a model railroad utilizes a digital counter to control the modes of motor operation. To select a mode of operation a switch is used to repeatedly ground the base of a...
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5296768 |
Revolutions per minute regulation device for a hand-held electric tool and method of its manufacture
A revolutions per minute (RPM) control device for hand-held electric tools, such as drilling tools and hammer drills, has a RPM sensor in a separate housing or container from the control device...
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5250765 |
Apparatus for controlling elevator door
An apparatus for controlling an elevator door comprises a motor for opening and closing an elevator door, an inverter unit for controlling the driving of the motor, a door position detecting unit...
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5189349 |
Drive circuit for multi-phase brushless DC motor including drive current detector
According to this invention, there is provided a drive circuit for a multi-phase brushless DC motor comprising a rotational position detector for detecting a rotational position of a rotor of the...
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5136219 |
Electric-car controller
The present invention is directed to an electric-car controller comprising a chopper for controlling the speed of a DC motor, a by-pass contactor for applying a DC source voltage directly to the DC...
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5122716 |
Apparatus for reversibly controlling a motor
A reversible control apparatus for controlling a motor is provided which is highly durable, weather proof, simple in structure and inexpensive to manufacture. The motor is controllably driven by a...
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5119001 |
Frequency controlled oscillating pet toy
A novel electric, gear driven, frequency controlled oscillating device that oscillates a toy mouse or other toys to amuse, occupy, and entertain pets. Because this unit is gear driven, it provides...
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5097185 |
Method and device for controlling speed of a motor in a powered seat
A method and device for controlling a motor in a powered seat, wherein, in an automatic control mode, a rated voltage is applied to the motor, thereby causing a constant high rotation of the motor,...
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