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Class Information
Number: 318/696
Name: Electricity: motive power systems > Open-loop stepping motor control systems
Description: Subject matter in which a rotary electric motor; of the type in which the rotary element tends to assume a predetermined angular position when the motor is continuously energized; indexes in discrete angular increments of essentially uniform magnitude as a function of pulse inputs derived from outside the motor.










Patents under this class:

Patent Number Title Of Patent Date Issued
4492903 Optimum efficiency brushless DC motor Jan. 8, 1985
4492909 Device for controlling the drive of a stepping motor, to adjust the lateral stitch bight and/or the feed length of a sewing machine Jan. 8, 1985
4491424 Electronic analog timepiece with rotation detection circuit Jan. 1, 1985
4490662 Positioning method and apparatus therefor Dec. 25, 1984
4490663 Device for driving a stepping motor Dec. 25, 1984
4490664 Step motor exciting apparatus Dec. 25, 1984
4490665 Method for driving a stepper motor Dec. 25, 1984
4489259 Method and apparatus for controlling a stepper motor Dec. 18, 1984
4489260 Method of driving a stepping motor and a drive circuit thereof Dec. 18, 1984
4486696 Stepping motor driving circuit Dec. 4, 1984
4484083 Electric drive train for a vehicle Nov. 20, 1984
4484123 Method and apparatus for controlling and regulating a motor with a permanent magnetic rotor Nov. 20, 1984
4484124 Method of and apparatus for damping of stepper motor using non-active windings Nov. 20, 1984
4482851 Control circuit for stepping motor Nov. 13, 1984
4481453 Torque loop control system and method Nov. 6, 1984
4481454 Method of driving a stepping motor Nov. 6, 1984
4480218 Direct detection of back EMF in permanent magnet step motors Oct. 30, 1984
4478121 Digital feed system Oct. 23, 1984
4479081 Step motor drive Oct. 23, 1984
4477756 Stepping motor exciting system Oct. 16, 1984
4477757 Phase commutator for closed loop control of a stepping motor Oct. 16, 1984
4477758 Stepping motor overcurrent detection and protection device Oct. 16, 1984
4477759 Stepping motor unit Oct. 16, 1984
4476421 Stepper motor exciting circuit Oct. 9, 1984
4475082 Analog display device, particularly a tachometer Oct. 2, 1984
4475151 Switching amplifier circuit Oct. 2, 1984
4471282 Step motor excitation system Sep. 11, 1984
4471283 Average current regulation for stepper motors Sep. 11, 1984
4471284 Reversible stepping motor Sep. 11, 1984
4469995 Method of stopping a stepping motor Sep. 4, 1984
4469996 Input control circuit for a step motor Sep. 4, 1984
4468600 Appliance controller Aug. 28, 1984
4468601 Stepper motor control Aug. 28, 1984
4468602 Method for reducing the consumption of a stepping motor and device for performing the method Aug. 28, 1984
4467254 Motor translator Aug. 21, 1984
4467255 Position detector for a stepping motor Aug. 21, 1984
4467256 Method and device for controlling a stepping motor of a timepiece Aug. 21, 1984
4465959 Step motor drive control Aug. 14, 1984
4464071 Detent apparatus for print wheel Aug. 7, 1984
4464616 Stepping motor controller Aug. 7, 1984
4463291 Automatic control system and valve actuator Jul. 31, 1984
4463301 Step motor driving circuit Jul. 31, 1984
4460282 Timepiece stepping motor drive circuit with stepping failure compensation Jul. 17, 1984
4460859 Stepping motor assembly Jul. 17, 1984
4459527 Stepper motor control circuit Jul. 10, 1984
4458185 Propulsion control apparatus for passenger vehicles Jul. 3, 1984
4458191 Step motor drive circuit Jul. 3, 1984
4456858 Permanent magnetic A.C.-D.C. motor Jun. 26, 1984
4456866 Method for slaving a stepping motor and arrangement for practising the method Jun. 26, 1984
4455513 Self-starting transducerless, brushless D.C. motor controller Jun. 19, 1984











 
 
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