Abstract: A memory system for an automatic door, the memory system being capable of recording for a specified length of time all relevant operational parameters according to the first-in/first-out principle.

Abstract: An appliance which, through motor-driven operation, is movable toward a closing edge, in particular, for use with window regulators and sliding roofs of automotive vehicles. For this purpose, the number of revolutions of the motor is permanently detected, with the number of revolutions of the motor being measured in successive measuring intervals. The number of revolutions is to be a measure of the force acting on the pane. Respectively the last four measured values are detected in a sliding register and are subjected to evaluation. For this purpose, first a start-up value is detected. The start-up value respectively is the third last measured value n.sub.i-3 if the difference D between the current measured value and the third last measured value does not exceed a predetermined differential threshold D.sub.max. For, in that case, the start-up value remains unchanged. Subsequently, the difference A is formed between the start-up value and the current value n.sub.i.

Abstract: A power window driving control device formed of a measuring device which measures time elapsed since closing of a window glass has been designated by a switch, a sensor which detects a completely closed state of the window glass, a current detecting device which detects that current flowing to a motor when the window glass is being closed exceeds a predetermined value, and a driving control device which effects one of stopping the motor and stopping the motor after driving the motor reversely for a predetermined time, in at least one of a first state, in which the current detecting device detects that the current flowing to the motor exceeds the predetermined value and in which the completely closed state of the window glass is not detected by the sensor, and a second state, in which the time elapsed since closing of the window glass was designated exceeds a predetermined time.

Abstract: A motor actuator for preventing a motor from drawing excess current for longer than a predetermined time delay period including dynamic brakes for simultaneously braking motor rotation when motor operation is terminated for any reason. Source voltage supplies an input to a voltage regulator which in turn supplies a regulated voltage to the motor. The actuator includes a comparator circuit that has one input connected to motor supplied regulated voltage and a second input connected to the source voltage with the voltage level from source voltage adjusted to a level that is equal to the regulated motor voltage level under normal motor operational loads. When the motor draws excessive current the voltages on the comparator inputs become unequal which causes the comparator to have an output voltage. An RC circuit from the comparator output to ground potential delays the comparator output voltage for a predetermined time.

Abstract: In a D.C. motor having a position detector for detecting predetermined rotor positions and an electronic commutation circuit for connecting the stator coils to the power supply in a predefined cyclic order (and for disconnecting them) in dependence upon detected predetermined rotor positions, the no-load speed is limited by delaying the connection of a next stator coil in response to a new detection of a next one of the predetermined rotor positions, until a predetermined delay period has elapsed after a previous detection of another rotor position that lies a predetermined distance ahead of the newly detected rotor position.

Abstract: A security timer, add-on device, for an automated, electrically-powered, garage door causes the door to close after it has been opened for predetermined time, e.g., four and a half minutes. The security timer consists of a relay, two micro switches, bell wire, and electrical wire. The relay, in parallel with the electric light, which is controlled by the automatic electric garage door opener, is thus energized, i.e., the points are opened, when the light is energized. Thus, the normally closed (N/C) relay opens and remains open while the light is lit. The first micro switch (M/S), normally opened (N/O), is in series with the relay, and is attached to one of the points of the relay, the other end, of the M/S, is attached to a push-button wall switch, which can also be used to control the garage door openings or closings. This M/S has a whisker which comes in contact with the door when it is fully open; thereby closing the M/S.

Abstract: In a method of controlling activation of a motor, based on a device number (unit address) set value A.sub.d which is determined exclusively for a disk device and a motor activation start time delay T.sub.d which is designated by a host control device, a motor activation start time T.sub.s which corresponds to the physical device number is calculated in the disk device. The motor activation start time delay T.sub.d is set as a command in an interface between the disk device and the host control device. The method also requires that a nonvolatile memory is disposed in the disk device. The motor activation start time delay T.sub.d is stored in the nonvolatile memory when designated. In controlling activation of the motor later, the motor activation start time T.sub.s is calculated from the information which is stored in the nonvolatile memory.

Abstract: A circuit and method are provided for automatically adjusting a commutation delay from events indicating a position of a polyphase dc motor. The circuit includes a driver to supply drive current to selected stator coils of said motor. A sequencer is connected to control the driver to apply drive current to selected motor coils to rotate the motor. Motor position detecting circuitry is connected to detect the events indicating the position of the motor. A commutation delay circuit is connected to increment the sequencer in response to the detection of the events indicating the position of the motor detected by the motor position detecting circuitry. A circuit for adjusting the delay of said commutation delay circuit between each event and each sequencer commutation provides optimum motor commutation for maximum power efficiency.According to the method, drive current is supplied to selected stator coils of said motor in predetermined commutated sequences to rotate the motor.

Abstract: A door closure delay system produces a first signal when a person approaches a doorway housing the door. The first signal is applied to a timing system and a voltage comparator so that a second signal is produced to limit closure of an open door. The second signal is maintained for a predetermined and adjustable time period after the first signal has been removed. More patricularly, a voltage regulator provides a base or reference voltage to the comparator. A sensor, monitoring the doorway or portal, provides a signal voltage to the comparator when a physical presence is in, or in proximity to the doorway. The comparator passes on an output voltage which is stretched (i.e., has its time line extended) to circuitry coupled to a door closer, to delay the closure of the door by the closer.

Abstract: Several embodiments of pedal operated vehicles such as bicycles wherein electric motor assist is provided in response to the pedaling force applied by the rider. However, a number of embodiments of malfunction detection devices are disclosed and which will preclude the application of electric motor assist if the system has been disabled or if it is not operating properly. In addition, a start up routine is also disclosed that prevents the sudden application of electric power upon starting of the system.

Abstract: A self-adjusting motor positioning system comprises a motor including a shaft extending therefrom, a disc coupled to the motor shaft and having at least first and second notches, rotating apparatus coupled to the motor shaft whereby the rotating apparatus is intermittently driven by the motor, a sensor adjacent the disc for detecting the first and second notches, and a control processor coupled to the sensor and the motor for receiving detection signals from the sensor and for turning the motor on and off. The control processor includes memory for storing a time delay count representing a time delay for the control processor to turn off the motor after the second notch is detected by the sensor. The rotating apparatus includes a starting position from which the rotating apparatus begins. The first notch in the disc corresponds to the starting position of the rotating apparatus. The control processor turns the motor off when the time delay expires after the sensor detects the second notch.

Abstract: A wiper controller comprises a power source, a wiper drive motor, a power switch, a wiper switch, a position detector for detecting the position of a wiper on the windshield of a vehicle, a drive control circuit for controlling the power supply to the motor, and a switch circuit for controlling the power supply to the drive control circuit. The drive control circuit is connected to the power source, and controls the power supply to the motor from the power source, based on the ON/OFF status of the power switch and wiper switch, and also based on information from the position detector. The drive control circuit causes the wiper to stop at a predetermined position on the windshield. The switch circuit allows power to be supplied to the drive control circuit when the power switch is switched on, and further allows the power to be supplied, for a predetermined period of time, after the power switch is switched off.

Abstract: Several embodiments of electric power assisted bicycles wherein an electrical motor is employed for assisting in the pedaling of the bicycle. The embodiments all include an arrangement for changing the state of the electrical power in response to pushing of the bicycle. In some embodiments, the circuit for the electric motor is opened when the bicycle is pushed rearwardly so as to avoid undue resistance to the pushing as might occur due to the fact that the motor would operate as a generator under this condition and provide an electrical load. In other embodiments, the electric motor is energized upon pushing so as to assist in pushing the bicycle.

Abstract: A programmer for an appliance having a line power switch and a plurality of program switches sequentially actuated by a cyclic cam mechanism. The program switches are latched to the actuated condition and uplatched independently of the cyclic mechanism by electrically energized release mechanisms, individually controlled by an electronic controller having a microcomputer which employs a user selected programmed sequence.

Abstract: An interface circuit between a microcomputer and a MOSFET driver for motor control includes logic for failsafe motor control particularly to protect the driver. AND gates supply driver signals when a set of conditions are met. Certain conditions are mandated directly by the microcomputer. An analog oscillator and digital counter are used to time data signals from the microcomputer to assure continual computer operation. Other conditions are determined by the logic and include monitoring faulty motor current conditions, assuring that forward and reverse signals are not given concurrently, and assuring that there is a dead time between forward and reverse signals to the driver.

Abstract: A drive apparatus for an opening and closing mechanism includes an electric motor, a clutch, a reduction gear unit and a timer mechanism. The clutch includes a coupling having first and second halves engageable with each other, and an actuator mechanism for connecting and disconnecting the first and second halves. The first half of the coupling is operatively connected to a rotor of the motor. The reduction gear unit is operatively connected to the second half of the clutch. The reduction gear unit has an output shaft for being operably connected to the opening and closing mechanism. The timer mechanism is provided for regulating the operating period of time of the motor in response to the operation of the reduction gear unit.

Abstract: A power window device is adapted to drive a motor which automatically closes a windowpane of a car in response to door locking of the car, and cut the drive power for the motor after a predetermined time.

Abstract: An electric appliance control system is disclosed in which a logic controlled, solid-state, electronic system is used in conjunction with a mechanical switching device in the form of a cam disc operating a plurality of cam-operated switches. The control system combines the capabilities of performing complicated and numerous operational programs with the reliability of the cam-operated mechanical switching device.

Abstract: In an induction motor drive controlled by SCR devices connected in the AC power supply phase lines of the motor, a plurality of channels establish, on a common input to a digital gate pulse generator of the SCR's, various signals occurring in the course of the motor drive operation. These signals relate to motor operating modes, such as soft start tripping, current limit. A central large scale integrated (LSI) chip responds digitally to such common input so as to establish the required firing angle at any instant and for any situation.

Abstract: A microcomputer-based electronic controller for a dishwasher utilizes a motor driven timing cam for selectively energizing the electromechanical components of the dishwater. An internal diagnostic routine in the microcomputer insures that the timing cam is advanced when the microcomputer calls for power to be applied to the motor.

Abstract: A rotation control system including speed control feedback automatic speed control apparatus for controlling the rotation speed of a rotator to a predetermined speed, feedback automatic phase control apparatus for controlling the rotation phase of the rotator to a predetermined phase, and changeover apparatus for changing over at least one of the loop gain of the speed control apparatus and a loop gain of the phase control apparatus in a changeover period, and changeover control apparatus for controlling the changeover apparatus in association with the rotation of the rotator.

Abstract: A microcomputer-based electronic controller for a dishwasher utilizes a motor driven timing cam for selectively energizing the electromechanical components of the dishwasher. An internal diagnostic routine in the microcomputer insures that the timing cam is advanced when the microcomputer calls for power to be applied to the motor.

Abstract: A driving circuit for use in controlling a motor for controlling an air mixing door, an inner and surrounding air change-over door and a mode setting door and the like used in a vehicle air conditioning device, or a motor used in opening or closing of window panes of a vehicle or in opening or closing the door which includes a control transistor for use in controlling a transistor circuit having a transistor to cause both normal and reverse directed currents to flow in a vehicle motor, the control transistor being operated until a specified period of time has elapsed after the power supply switch is turned on, the motor input being shut off by the control transistor so as to prevent erroneous operation of the motor just after the power supply switch is turned on or to prevent the production of a chattering sound caused by the operation of gear trains with the motor.

Abstract: A food processor is comprised of a food processing cutter which is driven by a motor connected to an AC power source, a switch for controlling on and off of the motor, a pulse generator for forming count pulses having a given period from the AC power source, a set switch, a start switch, and a timer which operates the start switch at a time point set therein to start the rotation of the motor. Further, the food processor includes an up-counter for counting the count pulses while the set switch is operated to store a driving time period data of the motor, and a down-counter to which the stored data of the up-counter is transferred when the start switch is operated by the timer. The down-counter counts down the data every time it receives the count pulse and produces a drive stop signal for the motor when its contents become "0".

Abstract: Device for the attenuation of the movement of the reel motors in recording devices during standstill of the tape capstan drive roller. The regulation of the reel motors proceeds during the normal run of the tape via the motor current and during the standstill of the capstan drive via the voltage which lies at the reel motors.

Abstract: An electronic control means utilized in an electrically actuated shift apparatus for a multispeed axle including an electric power source and an electric motor coupled to actuate means for shifting the axle. The power source is connected to the electric motor through a shift speed control switch and a plurality of steering diodes. When the switch is actuated to select an axle speed, power is applied through one of the steering diodes to one side of the armature of the motor. Power is also applied through another of the diodes as a shift signal to a timing circuit. A first means is responsive to the shift signal for generating a first control signal for a first predetermined time. At the termination of the first control signal, the timing circuit generates a second control signal to connect the other side of the motor armature to ground thereby actuating the motor.

Abstract: A variable speed motor control system for controlling the vertical speed of a hoist. An electro-mechanical brake means locks the hoist load in place when the system is off or when the motor speed is set at a zero speed setting. A quick response circuit is connected into the system for a predetermined time duration after the system is switched from a zero speed to any speed setting (high or low speed), to enable the motor to quickly gain control over the load and prevent the load from slipping as the motor accelerates to the set speed after the brake is released. An initial delay timer is turned on when electrical power is first connected into the system, to prevent transfer of electrical power to the motor and to prevent release of the brake, for a predetermined period of time. A hoist (up-down) electro-mechanical contactor connects electrical power from a source to a thyristor static switch.

Abstract: A delayed turn-on and turn-off control circuit for an electric motor includes a motor relay having an electrical actuator and a normally open motor contactor which is connected in series between the motor and an electrical power source for running the motor when the electrical actuator is energized. A normally non-conductive electrical switching device is serially connected between the electrical actuator and the power source. A turn-on delay circuit is responsive to closing of a normally open motor start switch and produces an electrical signal to render the electrical switching device conductive only after a predetermined lapse of time following the closing of the motor start switch, thereby energizing the motor.

Abstract: A fail-safe timing circuit energizable in response to a starting signal for activating a system, such as an air conditioning system, includes a first switching circuit responsive to the request signal to activate the system to commence its operation tentatively, a time-out circuit responsive to the starting signal for generating a time-out signal after a predetermined time delay interval, a circuit responsive to a system variable such as the compressor oil pressure achieving a given desired value, for preventing the time-out circuit from generating its time-out signal, and a second switching circuit for causing the first switching circuit to de-activate the system in response to the time-out signal. As a result, the system is prevented from operating in an undesirable or unwanted manner should the system variable not reach the predetermined condition within the timing interval.

Abstract: A control system for a motor having a required oil pressure for the safe operation thereof, the system having a time delay switch for interconnecting an electrical source to the motor to operate the same each time the time delay switch is initially activated by being placed across the power source. The time delay switch has a time delay bimetal means that is adapted to move and open the switch if the oil pressure of the motor does not reach the required value within a predetermined time period from the initial activation of the time delay switch. An oil pressure responsive switch is operatively interconnected to the time delay bimetal means and to the motor to terminate the switch opening movement of the time delay bimetal means if the oil pressure reaches the predetermined value thereof during the predetermined time period so that the motor will be continuously operated as long as the system is not manually or automatically turned off or the oil pressure does not fall below the predetermined value thereof.