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Sealed Crustless Sandwich

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Class 318/260 - And acceleration control


Subclass of Class 318 - Electricity: motive power systems
Definition: Subject matter in which means are provided for also controlling
No. of patents: 17
Last issue date: 10/07/2008


NumberTitleIssue Date
7432675Method of removing foreign particles from heat transfer surfaces of heat sinks
A method of operating an apparatus for use with a computer, including a power source, a system board, and a heat sink. The method includes operating a fan reversing control card, which is coupled to the system board, to generate normal and reverse cycle rotation sig...
10/07/2008
7400103Controller for a multi-phase brushless DC motor
Control of rotational speed of a direct current multi-phase brushless motor is provided using an apparatus and method that works at low speed but does not depend upon Hall effect sensors. An apparatus for accelerating rotation of the motor shaft has a power stage ci...
07/15/2008
7336044Direct current motor control circuit
A DC motor control circuit includes a pair of substantially identical unipolar control circuits. Each of the unipolar control circuits are connected between a respective current source and a current input to the motor. Each of the unipolar control circuits includes ...
02/26/2008
7253580Method and apparatus for adaptive motor speed control
A different adaptive control method is used to control a motor during each of two or more phases of motor operation. Thus, in a first phase of motor operation the motor is controlled using a first adaptive control method, in a second phase of motor operation the mot...
08/07/2007
7068002Motor control device
A motor control device comprises: a current limiter 115 for limiting a current-instruction signal Ir for a motor 18 and for turning a limiting signal L from off to on when the current-instruction signal Ir reaches a predetermined value; a model-positio...
06/27/2006
7008184Control for cooling fan
A control for changing direction of air flow through a cooling core in response to an external signal and a purge signal includes a logic circuit and a relay assembly. The logic circuit generates a fan control signal based on the external signal, which causes the fa...
03/07/2006
6970075Electronic programmable speed limiter
The instant invention utilizes a programmable circuit which has a 186EM Micro controller therein to operate a circuit which integrates peripherals such as a memory controller, a programmable input and output, a timer and serial controller to increase system function...
11/29/2005
6915538Smooth start system for power chair
An apparatus, method and program product gradually and automatically accelerates or decelerates chair motor speed to achieve a smooth, nearly imperceptable movement of the chair. To this end, voltage is apportioned to the motor according to an acceleration profile.
07/12/2005
6750623Reversible automatic fan control system
A method of operating a fan control system associated with a radiator may include rotating a fan in a first direction at an operating speed to direct cool air toward the radiator for a first predetermined period of time. After expiration of the first predetermined p...
06/15/2004
6597135Combination 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 in series with the motor and the first switch. A second, pulse wid...
07/22/2003
6590356Combination 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 in series with the motor. A circuit 15 is in series with the first switch 14. The circuit 15 includes a resistor 16 and a second, pulse widt...
07/08/2003
6326749Motor 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 to rotation signals of the motor, a motor control signal ...
12/04/2001
5530332Stepper motor drive circuit
A drive circuit for a stepper motor intended to drive a load, which circuit is adapted to operate in a chopper drive mode during a motor acceleration phase, and an L/R drive mode during a subsequent cruise phase....
06/25/1996
5060151Speed control for orbital shaker with reversing mode
An orbital shaker apparatus which has a tray for cyclic motion is flexibly suspended from a frame which is flexibly suspended from a plurality of stationary supports. The flexible suspension constrains the tray to move only translationally along one axis ...
10/22/1991
4341985Proportional speed control arrangement
A proportional speed control arrangement (100) is disclosed for use with vehicles requiring variable velocities of operation. Specifically, the arrangement is utilized with a traction motor apparatus (101) to provide velocity adjustments to a service type...
07/27/1982
4087776Accelerator switch assembly
A control box is provided having a control shaft which projects from the box and is adapted to be connected, directly or by linkage, to the accelerator pedal of a battery-operated motor vehicle. Connected to the inward end of the control shaft is the mova...
05/02/1978
4079298Open-loop D.C. motor of printer carriage speed
Open-loop means for controlling the speed of a d.c. motor controlled print head moving across a document. A switch couples a first voltage to the d.c. motor to accelerate the print head in a first direction. When the print head reaches the desired velocit...
03/14/1978
 
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