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7180254 |
Method and apparatus for controlling an oscillating electric motor of a small electric appliance
A method of controlling an oscillating electric motor of a small electric appliance, the method including supplying an electric current to a coil to produce a magnetic field emanating from a first...
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7145300 |
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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6768281 |
Verification of operational capability of a tape drive
Verification system logic operates PWM motor drivers for DC motors of a tape drive, and verifies the on time duty cycle period and offset of the PWM motor drivers; verifies DAC current reference...
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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...
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6680591 |
Apparatus for phase angle monitoring of a plurality of vibrating machines
A phase angle monitoring apparatus for phase monitoring a vibratory system includes a controller that produces a phase angle control signal representative of the lead or lag between the vibratory...
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6342767 |
Mobile type X-ray apparatus
In a mobile type X-ray apparatus, an input shaft of a cyclo-decelerator is connected to one end of a rotational shaft of a motor, and the other end of the rotational shaft is connected to an...
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6107770 |
Control system for counter-oscillating masses
A control system stabilizes the flexible body bending modes of a space, airborne, or ground-based system, while providing angular position control of an oscillating mass connected to a...
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5804933 |
Method for operating an adjusting apparatus and means for adjusting a positional device
A method and apparatus for operating a positioning device for an adjustable device. The positioning device is mechanically actuated by a bearing connected to a pivotable armature that interacts...
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4829217 |
Device for controlling movement of a rotating element
A safety device for use in a recording apparatus controls the on/off operation and prevents the malfunction of motors for driving a gear flange to rotate a light sensitive drum and for driving an...
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4707642 |
Actuating device
An actuating device comprises a three-dimensionally movable member, a support member for supporting the movable member and an induction unit for imparting an induction force to at least one of the...
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4706007 |
Surface pulse motor
A surface pulse motor having a stator and a mover is provided such that the stator is made of a magnetic material of a planar configuration with a number of projections formed on a surface thereof...
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4633148 |
Linear drive motor multiple carrier control system
Disclosed is a multiple carrier transportation system. The system employs a plurality of linear induction motors positioned along a track. A plurality of carrier units are used for moving work...
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4631455 |
Method and apparatus for converting a conventional internal combustion engine into a high speed electric motor and generator
An electric starter motor and generator is integrated into the structure of an internal combustion engine by making the ferromagnetic pistons of the engine the relatively moving elements in the...
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4585977 |
Electronic motor
An electronic motor includes a shaft mounted for rotation about a rotational axis. A plurality of radial lever arms are mounted with respect to the shaft. Each lever arm has an inner end connected...
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4510420 |
Servo rotary motor
A modified form of apparatus is disclosed, and the preferred and illustrated embodiment thereof utilizes a pulse width modulator circuit to control the duty cycle pulses applied to coils for...
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4498032 |
High torque digital stepping motor and control
Three radially extending push rods (26, 28, 30) make contact with an undulating cam surface on the periphery of a cam (10). The push rods (26, 28, 30) are driven inwardly by electrical solenoids...
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4092568 |
Interpolating stepping motor system
A driven load is advanced to a selected position by the rotor of a large angle step motor, the housing of which is driven by a small angle step motor having a stationary housing. Driving pulses are...
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4056760 |
Method of driving a two coordinate oscillator and circuit arrangement therefor
A method and a circuit arrangement for driving a two co-ordinate mechanical oscillator with the aid of a deformed rotating field of forces defined by a plurality of exciting and pick-up components....
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4019103 |
Electromagnetic motor and generator
An electromagnetic motor and generator is disclosed having a pair of solenoids wound on a cylinder, each of said solenoids comprising three separate but connected windings. A magnetizable piston is...
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4012675 |
Switching system for solenoid reciprocator
A switching system for a solenoid reciprocator motor of a type which has a piston arranged to reciprocate into and out of a solenoid. The switch is an SCR rectifier and the trigger lead to close...
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4001658 |
Oscillator for non-sinusoidal movements
An oscillator for generating non-sinusoidal, preferably triangular movements from a harmonic synthesis of individual sine oscillations. The oscillator comprises a plurality of mechanically...
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3832608 |
ELECTROMAGNETIC MOTORS AND PROCESS OF THEIR OPERATION
Electromagnetic reciprocating piston motors operate at wide speed range without changing direction of magnetic flux through the pistons and while positively maintaining the direction of flux in the...
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3771034 |
LINEAR ELECTRIC MOTOR AND DISPLACEMENT PROCESS
A pair of electrical coils are constrained for movement in different directions in the flux field of a magnet and are coupled together for producing a combined output in a single path responsive to...
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3654804 |
STABILIZATION OF MULTIPLE SHAKER SYSTEMS
The problem of multiple shaker system instability due to cross-coupling of shaker drives via the load is significantly reduced by furnishing a bias signal which is a function of force application...
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3477281 |
MULTIPLE SHAKER CONTROL SYSTEM
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3328656 |
Reciprocating motor control system for motors having high q solenoid coils
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3324366 |
Tuned reed motors
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3293515 |
Long travel linearly reciprocating electric motor
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3287616 |
Solenoid motor
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3214662 |
Electro-mechanical oscillation sustaining drive system
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3172027 |
Sequentially energized solenoids reciprocating motor system
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3107481 |
Timing device utilizing a mechanism
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3087347 |
Counting devices
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3070716 |
Positioning motors
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2997637 |
Positioning motor
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2995689 |
Ultrasonic control circuit
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2965824 |
Cyclic motor
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2922175 |
Tuyere punches and like machines
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2869060 |
Ice maker and timer
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2864010 |
Rapid traverse system
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