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| Number | Title | Issue Date |
| 4947071 | High speed DC motor The stator electromagnets (80', 82', 84', 86', 88', 90') face inward about the rotor cavity (12) of the motor. Spaced horseshoe magnets (70) with spaced apart, opposite poles face outward about the periphery (22) of the rotor (20). The stator electromagne... | 08/07/1990 |
| 4917360 | Operating device for electric chain block An operating device for an electric chain block having an electric motor for a raising and lowering operation comprises a cylinder body interposed between one end of a chain for raising and lowering an object and a hook for hanging the object, a cylindric... | 04/17/1990 |
| 4918361 | Torque transmitting apparatus A reel for webs of photographic material can be driven clockwise and counterclockwise by a reversible d-c motor through the medium of the output shaft of the motor, a second shaft which is coaxial with the output shaft and serves to rotate the reel, and a... | 04/17/1990 |
| 4905315 | Camera tracking movable transmitter apparatus Apparatus for mounting and positioning an associated device such as a camcorder which includes a transmitter for producing a control signal, a substantially fixed platform and a control apparatus including a plurality of sensors disposed in a plane at ang... | 02/27/1990 |
| 4899093 | Circuitry for electronically commutating a direct-current motor A circuit arrangement for electronically commutating a multi-phase direct-current motor, in which a predetermined number of markers are distributed around the circumference of the rotor. A sensor detects the markers and generates corresponding commutating... | 02/06/1990 |
| 4888532 | Object sensing apparatus An object sensing apparatus includes a plurality of light emitting diodes for illuminating a region of space and a plurality of closely arranged light detectors for receiving light reflected from an object. The apparatus is particularly useful in connecti... | 12/19/1989 |
| 4864201 | Light actuated curtain puller An automatic electro-mechanical device for opening and closing a curtain or drapery in response to changed light striking a photoelectric cell on the device. The device comprises a miniature high torque reversible electric motor and control packaged in a ... | 09/05/1989 |
| 4859867 | Windshield moisture sensing control circuit The specification discloses a modulated optical moisture sensor control circuit for a vehicle windshield wiper. The control system includes a first detector providing a signal indicative of moisture on the windshield and a second detector providing a refe... | 08/22/1989 |
| 4851746 | Sensing apparatus for automatic door A sensing apparatus for use with an automatic door operator and operator control logic responsive to door control signals for controlling the opening and closing operations of a swinging door is disclosed. The disclosed apparatus includes a plurality of i... | 07/25/1989 |
| 4843639 | Fully automatic garage door opener This invention relates to a door or a gate for an enclosure, controlled remotely by a vehicle using an electronic control for moving the door to an open or closed position with a switch for initiating the operation of the control. The invention particular... | 06/27/1989 |
| 4827196 | Motor control arrangement A motor control arrangement for a brushless dc motor is characterized by referencing the motor commutation and current controls at a potential different from that used by the motor. As a result a dynamic control range on the order of 400:1 may be achieved... | 05/02/1989 |
| 4816728 | Photoelectric motion limiting control apparatus for a robot mechanism A robot control apparatus according to the present invention includes a limiter, used to limit the operating range of each axis of a robot mechanism. The limiter includes a photo-interrupter where, if a light-interrupting disk, attached to one side of a m... | 03/28/1989 |
| 4761594 | Device for detecting the condition of carbon brushes An optical device for detecting a condition of a carbon brush in a drive unit includes lightguides disposed in vicinity with the carbon brush yet out of contact with the carbon brush and having a device for monitoring wear of the carbon brush, and a devic... | 08/02/1988 |
| 4755730 | Variable resistance output motor controller In a thermostatic control system a solid state motor controller is provided by reproducing a potentiometer tracking with a CPU producing appropriate complimentary square wave signals having the duty cycle thereof proportional to a sensed temperature. The ... | 07/05/1988 |
| 4736140 | Control device for a controlled and variable speed motor by means of a stepping motor The present invention relates to a control device for a reversible and variable speed motor by means of an optoelectronic system controlled by a stepping motor characterized in that it comprises two disks, the first disk being integral with the motor, or ... | 04/05/1988 |
| 4720662 | Motor having alternator coils A motor has a stator having sequential groups of three coils designated 36, 37 and 38. On at least one side of the stator is a rotor having permanent magnets, alternating N and S. The source of power (herein a battery) is connected by switches to energize... | 01/19/1988 |
| 4717864 | Speed control method and apparatus for electronically commutated motors A speed control system for an electronically commutated motor having stator windings, a rotor mounted for rotation relative to said windings, switches for individually energizing said windings, and phase steering means operable to close said switches to s... | 01/05/1988 |
| 4709197 | Control device for driving e.g. a shredding machine or a similar machine In an electrically powered machine subject to occasional blockage, the speed, power consumption, torque and/or rate of deceleration are displayed by successive illumination of light-emitting diodes in a row. Predetermined limit values for these parameters... | 11/24/1987 |
| 4707641 | Driving mechanism for wiper blades The invention relates to driving mechanism for wiper blades of, for example, motor vehicles wherein two motors (14, 15) impart to the wiper arm, or to at least one of its elements, not only an oscillating, but also a translational (radial) movement. The o... | 11/17/1987 |
| 4705998 | Automatic window wiper control The invention is directed to an automatic wiper control circuit for operating window wipers automatically when moisture is sensed. The control circuit additionally provides for increasing the speed of a dual speed wiper motor when a high level of moisture... | 11/10/1987 |
| 4698567 | Ribbon deck motor control Apparatus for adapting a common dc motor for use in a typewriter to drive the ribbon lift and advance functions. The motor is coupled by means of a set of gears to a shaft on which are mounted the ribbon advance gear and ribbon lift cams. Also mounted on ... | 10/06/1987 |
| 4680513 | Electric motor reversing control devices A control device for a reversible D.C. electric motor to protect it against damage upon reversal has a input switch circuit for reversing the flow of current through the motor's armature for reversing the direction of rotation of the motor, a first contro... | 07/14/1987 |
| 4678974 | Pulsating current electromotor without commutator A pulsating current electromotor without commutator comprises a permanent magnet type or electromagnetic type rotor keyed on a rotating shaft and having the poles diametrically opposite to one another relative to the shaft on which they extend for the gre... | 07/07/1987 |
| 4651074 | Robotic sensor A robotic sensor incorporates an array of closely spaced force sensors which are carried on a mounting plate. The front surface of this mounting plate is brought into contact with the object under inspection. A plurality of optical fibers are attached to ... | 03/17/1987 |
| 4636698 | Automatic device for actuation of components to clean a motor vehicle window An automatic device for actuation of components for cleaning motor vehicle glass which includes a system for detection of the dirtiness of the glass, made up of a measuring photosensitive element receiving light directly through the glass and a reference ... | 01/13/1987 |
| 4622502 | Position detecting apparatus A position detecting apparatus provided with a lighting unit 13 for lighting an object 14 to be detected, an image-formation unit 15 for imaging the object 14, a detecting unit 16 comprising a plurality of photoelectric converters disposed on the image-fo... | 11/11/1986 |
| 4620141 | Rain-controlled windshield wipers An electronic control system for windshield wipers on motor vehicles for initiating wiping action in response to the occurrence and level of precipitation on the windshield. A sensor unit comprising a block containing an array of photo-sensors arranged in... | 10/28/1986 |
| 4618804 | Remote control apparatus for opening and shutting a blind A remote control system for bidirectionally rotating an electric motor, such as for opening and closing a blind or the like, comprises a hand-held transmitter including a transmitting circuit capable of developing a forward rotation command signal and a r... | 10/21/1986 |
| 4609856 | Slot detecting apparatus A slot detecting apparatus comprises a sensor for detecting a slot of a workpiece, comparators, and a discriminating circuit. The sensor moves over the workpiece so as to traverse the slot and produce an output having a waveform which is substantially an ... | 09/02/1986 |
| 4604562 | Feedback-controlled workpiece positioning system X-Y position measurement apparatus is employed with feedback controlled X-Y positioning apparatus for positioning a workpiece stage at a desired X-Y coordinate position in response to signals indicative of the actual position and the desired position of t... | 08/05/1986 |
| 4598237 | Power window control apparatus A power window control apparatus has a transmitter, detachably mounted to a fixed member in a compartment, for transmitting coded infrared ray signals corresponding to opening/closing operations of right and left windows of a vehicle and a receiver fixed ... | 07/01/1986 |
| 4595866 | Windshield wiper control apparatus An automotive wiper control apparatus has an infrared emitting unit outside an occupant compartment, a photodetector unit inside the compartment in optical alignment with the infrared emitting unit, and an electric control for automatically controlling th... | 06/17/1986 |
| 4594539 | Light valve A light valve has a pair of rotating vanes for controlling the cross section of a light beam passing between the vanes. The vanes rotate on corresponding shafts, each controlled by its own integral motor. Separate feedback control systems produce electric... | 06/10/1986 |
| 4590410 | Object sensing apparatus An object sensing apparatus includes a plurality of light emitting diodes for illuminating a region of space and a plurality of closely arranged light detectors for receiving light reflected from an object. The apparatus is particularly useful in connecti... | 05/20/1986 |
| 4588935 | Method for controlling automobile device when sensor output is abnormal A control method performed in response to the occurrence of an abnormal sensor output during the operation of monitoring the output signal of a sensor and controlling the operation of an automobile device such as a wiper. A microcomputer detects the prese... | 05/13/1986 |
| 4577437 | Automatic door object sensing system Mechanism for automatic swing doors including three motion detectors, two associated with the approach side of the door and one on the swing side of the door, with the detectors on the approach side effective, when activated, to open the door and the dete... | 03/25/1986 |
| 4560912 | Object sensing apparatus for an automatic door An object sensing apparatus includes a plurality of light emitting diodes for illuminating a region of space and a plurality of closely arranged light detectors for receiving light reflected from an object. The apparatus is particularly useful in connecti... | 12/24/1985 |
| 4554498 | Control apparatus for running moving object The present invention relates to an apparatus for controlling a moving object and particularly for automatically stopping the moving object in a predetermined position and direction. The apparatus comprises a pair of photoelectric sensors having a light e... | 11/19/1985 |
| 4536687 | Apparatus for controlling power window of vehicle A power window of a vehicle is disclosed wherein a window motor adapted for opening and closing a window of the vehicle is connected to a power source through a window switch for opening and closing the window and a main switch adapted to to be opened and... | 08/20/1985 |
| 4528489 | Electrical remote control circuit A remote control circuit for a hard wired remote control controlling multiple functions in a multiple motor device has a reduced number of wires extending between the hand held control and the motor control circuit. The circuit includes a rectifier for ge... | 07/09/1985 |
