Abstract: A bag neck tying device for tying a ribbon dispensed from a spool about a gathered neck. A pulley and proximity switch are mounted to prevent the completion of a tying cycle if a bag neck is not properly gathered and ready to be tied.

Abstract: A vehicle mirror assembly comprising a housing assembly, a mirror unit, a support assembly to support the housing assembly, a power operated pivot assembly between the support assembly and the housing assembly to enable the housing assembly to be pivoted with respect to the support assembly about a generally upright axis (1) between an operative position and a folded position in response to the power operation of the pivot assembly and (2) from the operative position thereof in either direction in response to an unwanted impact blow applied in either direction thereto. A spring biased pivotal control system is disposed between a movable tubular member of the pivot assembly and the support assembly to provide a control resistance to pivotal movement of the movable tubular member and hence the housing assembly connected thereto.

Abstract: A control device controls an open/close movement of an automotive window pane which is driven by an electric motor. The device comprises a first switch for, when taking ON position, energizing the motor to drive the closure in a first direction toward a pull-opened position and a second switch for, when taking ON position, energizing the motor to drive the closure in a second direction toward a full-closed position. A determining device is provided for determining an energization stopping position which is taken by the closure before taking the full-opened position when moved in the first direction. The energization stopping position and said full-opened position are separated by a given distance. A controller is further provided which stops energization of the motor when the closure comes to the energization stopping position during movement in the first direction.

Abstract: A sensor which is intended to detect the rotational position of a rotatable device, e.g. a shaft or a rotatable hatch, which is rotatable, preferably by a motor, incorporates a position detector and a potentiometer. To improve the potentiometer's accuracy within part of the relevant rotation range of the device, a cam mechanism is arranged between the potentiometer and the rotatable device.

Abstract: A garage door operator has an electric motor controlled by a control unit. A transmission is connected to the motor to be driven thereby to open and close a garage door. An infrared obstacle detector is connected to the control unit and includes a unitary infrared pulse emitter and an infrared detector. A missing pulse detector is coupled to the infrared detector to generate a door opening signal if the door is closing when the pulses are absent due to the infrared being interrupted by an obstacle or not having been generated. The control unit receives the door opening signal and causes the electric motor to open the garage door.

Abstract: An aircraft window shade speed control system which allows the coordination of window shade movement speed throughout an aircraft using a single set-point device for each window shade. Each window shade is moved by an electric motor, and its travel is limited by upper and lower limit switches. Voltage is applied to each motor by a motor control module that is relatively insensitive to variations in aircraft electric buss voltage and motor current requirements. A remote operation switch allows the pilot of the aircraft to open or close all window shades in the aircraft simultaneously, and to be assured of their ultimate position by observing only the window nearest his own position.

Abstract: A sorter is provided with a plurality of movable sorting trays and a movement control device for controlling the movement of the movable sorting trays. The control device includes a sensor for detecting that a part of a screw rod passes through an index point which is remote from a stop position by a predetermined distance, a sensor for detecting the rotation of the screw rod and outputting a predetermined number of pulses in accordance with a predetermined moving distance of the screw rod. The control device is constructed in such a manner that it sets a stop pulse number according to the predetermined distance, counts the pulses from when the sensor detects that the screw rod passes through the index point, stops the movement of the sorting trays when the stop pulse number is count up, and controls a timing of the stop of the sorting trays in accordance with a moving condition of the sorting trays.

Abstract: A windshield wiper system having variable frequency induction motor control for reducing wipe speed at reversal points includes an induction motor, a wiper and blade assembly operatively connected to the motor, a sensing means for detecting when the position of the wiper and blade assembly is within a preselected range of one of the reversal points, and a motor control responsive to the control signal generated by the sensing means for causing the motor to reduce wipe speed during the preselected range prior to the reversal point to reduce pattern growth, noise, and water expulsion. The sensing means takes the form of a cam or plate operated switch driven by the induction motor. The control signal derived from the cam operated switch is provided as an input to a voltage controlled oscillator, whose variable frequency output is used to vary the frequency of the excitation voltage applied to the windings of the three phase induction motor.

Abstract: A method of automatically controlling the opening and closing of the window of the driver's cab of a working vehicle, and an apparatus for practicing the same method, are capable of carrying out the opening and closing of such a window smoothly and the shutting of such a window reliably, and have a high operability and a high safety. To obtain such effects, the apparatus is provided with a window (14) movable along guide rails (20L, 20R, 22L, 22R) extending between a window frame (16) and a top wall (18), a driving cable (28) for moving the window (14) vertically by operating a driving means (34), locking units (29L, 29R) adapted to press the window (14) against the window frame (16) of the driver's cab (12) and shut the same, and a controller (50) for controlling these operations.

Abstract: A device for operating a movable part of a motor vehicle, in particular a sliding roof, is provided with an electric motor for driving the movable part, an adjusting element for setting a desired position for the movable part, an incremental position sensor for detecting the actual position of the sliding roof, a counter in addition to the position sensor, the reading of which counter gives the actual position of the movable part, and an electronic control unit which, depending on the desired position and the counter reading, actuates the electric motor in order to move the movable part into the desired position. The control unit comprises detection means for detecting at least one limit position of the movable part, at which the movable part is unable to travel further, whereby, when said limit position is reached, the control unit resets the counter to a predetermined reading which corresponds to said limit position.

Abstract: Device for driving a body by means of an electric motor, comprising mechanical means for measuring the displacement of said body which are kinematically linked to the body and are equipped with switches (ID, IM) actuated by the mechanical measurement means at certain points on the trajectory of the body. The device comprises means for initializing a phase for specific powering of the motor such as power supply at reduced torque for a timed duration (TP, x, C4) or power supply at reduced voltage or cut-off of the power supply, switched in by actuation of at least one of said switches.

Abstract: An apparatus for remotely operating an ignition switch mounted on the steering column of an automobile includes a motor mounted on the floor or other surface of the automobile away from the steering column, such that the steering column does not bear the weight of the motor. A drive cable is connected to the motor, and the drive cable is also connected to a coupling which is mounted on the steering column and which is connected to the ignition switch. The coupling translates rotational motion of the drive cable 90.degree., so that the coupling and drive cable do not unduly project straight out from the steering column and hence do not interfere with other components, e.g., shift levers, that are mounted on the steering column. A position sensor generates a signal representative of the position of the ignition switch, and the signal is received by a controller. In turn, the controller activates the motor as necessary to establish and/or maintain a desired position of the ignition switch.

Abstract: A light and motion governed garage door opener lamp comprising an illumination system. Also included is a garage door opener system that produces a first electric signal upon the activation thereof. A sensor module includes a motion sensing mechanism capable of detecting the presence of one or more humans nearby and producing a second electrical signal upon the detection thereof. The sensor module further includes a light sensing mechanism having an open orientation when exposed to sufficient light for allowing the transmission of the first and second electric signals thereby allowing energization of the illumination system. The light sensor switch further has a closed orientation when exposed to insufficient light for precluding the transmission of the first and second electrical signals thereby preventing energization of the illumination system.

Abstract: A process for the monitoring of, in particular, the closing of a motor-operated aggregate, preferably for use in motor vehicles, for example a vehicle window or sliding roof. A motor which is connected to the vehicle electrical supply system is switched off by means of switching elements and/or a sensor which detects characteristic values of the aggregate and a data processing system including storage and comparing means. Switch off occurs during the closing process within a predetermined (central) portion of the closing travel, when a value dependent on the motor rpm or the speed of the aggregate exceeds a threshold value based on a stored reference value. A monitoring system is effective in the start-up phase of the motor. In the start-up phase of the motor, therefore, an initial threshold value based on a reference value detected towards the end of the previous adjustment process and then stored, is compared with the current motor period value.

Abstract: A closure system for a motor vehicle includes a closure, a closure frame, an electric motor, a control switch, an electrical power source, first and second displacement sensors, a temperature sensor, a current sensor for a current being drawn by the electric motor, and a microprocessor. The first and second displacement sensors each operably generate a signal indicative of closure movement. The microprocessor is electrically connected to the control switch, the electric motor, the first and second displacement sensors, the temperature sensor and the current sensor. The microprocessor electrically connects the motor with the power source responsive to a condition of the control switch. The microprocessor also converts the temperature sensed to an electrical signal indicative of the temperature, and converts the current sensed to an electrical signal indicative of motor current.

Abstract: An automatic door opening and closing system opens a door by driving means when a person approaches the door. A monitoring area is set in the vicinity of the door, and moving speed and direction computing means computes the speed and direction of movement of the person on the basis of changes in position of the person in the monitoring area. When it is judged from the computed direction of movement that the person is moving toward the door, door enabling area selecting means selects one of plural door enabling areas suitable for the speed of movement of the object. Open-door command means provides an open-door signal, which causes the door to be opened at a fixed speed, to the driving means so that the door is fully opened upon the predicted arrival of the person at the door.

Abstract: A transfer switch assembly to alternatively connect an electrical load to a primary or to a secondary power source. The transfer switch uses two conventional switches, or circuit breakers, having pivot type or linear type actuating members. A conventional linear motor is used. The actuating members of the switches, or circuit breakers, are in contact with the movable portion of the linear motor through a coupling mecanism. The coupling mecanism ensures that the switches, or circuit breakers, are not in a closed position simultaneously.

Abstract: An arm position control device for use in an industrial robot which comprises: a support body; a rotary arm rotatably mounted on the support body for rotation towed one of clockwise and counterclockwise deviation zones from a home position within a permissible angular extent; a home position sensor fixedly attached to the support body to identify home position of the rotary arm; a limit sensor fixedly secured to the support body with a predetermined angular spacing from the home position sensor to detect movement of the rotary arm beyond the permissible angular extent; a sensor actuator rotatable with the rotary arm as a unit for keeping the home position sensor interrupted when the rotary arm lies in the clockwise deviation zone, for making the home position sensor released when the rotary arm lies in the counterclockwise deviation zone and for bringing the limit sensor into a released condition as the rotary arm is out of the permissible angular extent; and an arm actuator operatively coupled to the rotary

Abstract: An electric motor (20) is controlled to move a vehicle window (28) between an upper limit position and a lower limit position. The rate of change of current flow to the motor is determined during upward movement of the vehicle window toward the upper limit position. A threshold rate of change of current flow value to the motor is stored which is a function of a plurality of determinations made of the rate of change of current flow to the motor during upward movements of the vehicle window toward the upper limit position. The stored threshold rate of change of current flow value is modified on each movement of the vehicle window to the upper limit position to make the stored threshold rate of change of current flow value a function of the determinations made of the rate of change of current flow to the motor which are most current in time.

Abstract: There is disclosed a photosensitive automatic controller for use with window coverings in particular for use with venetian blinds. The controller includes a reversible motor, a drive circuit, a photosensitive sensor, a user input, a control signal processor, a command circuit and a feedback sensor. The reversible motor is operably connected to the opening and closing device and it has a predetermined range from open to closed which corresponds to the window covering being fully opened and fully closed. The drive circuit is operably connected to the motor for generating a drive signal which drives the motor in a predetermined range from opened to closed. The photosensitive sensor generates a sensor signal. The user input generates an input signal. The control signal processor is operably connected to the photosensitive sensor and the user input and the sensor signal is combined with the input signal to produce a control signal.

Abstract: A power supplying apparatus for a powered latching mechanism attached to a sliding door which moves along a vehicle body so as to be open and closed comprises a power supplying unit provided on the vehicle body and connected to an electric battery, a power receiving unit provided on the door and coming into contact with the supplying unit when the door is closed to a predetermined position, an electric loop which is established when both the units comes into contact with each other and in which a first electric current for detecting the contact between both the units is caused to flow, a motor controlled by the receiving unit for rotating a latch towards a full-latched position, and means for changing voltage applied to the electric loop when closing of the door is completed by the motor. When the loop is established, the supplying unit begins supplying main power to the receiving unit, and when the voltage of the loop is changed by the changing means, the supplying unit stops supplying the main power.

Abstract: An actuator for a locking mechanism which locks a shiftable lever in a locked position or a released position. The actuator includes a lock member which is shiftable between a locking position and an unlocking position for causing the lever to be locked in position or to be released from said locking position. A drive mechanism continuously forces the lock member toward said locking position. A drive mechanism causes a rotatable cam to rotate a predetermined distance in a preselected direction. The rotatable cam positions the lock member in the locking position or the unlocking position. The cam is specially designed to permit the lock member in the lock position, to be shifted to the unlocking position against the action of the drive mechanism. The drive mechanism includes a motor for rotating the cam in a predetermined direction, and a control circuit for controlling the power supply to a motor, in order to control the rotational phase angle of the cam.

Abstract: In order to improve a method for monitoring movable elements, in particular windows and sunroofs in motor vehicles, such that an object clamped between the movable parts and the part at rest is detected in a reliable fashion, the force acting upon such objects is maintained at the lowest possible value and the direction of the window is inverted as rapidly as possible. In order to ensure a reliable protection, a cutoff threshold consists of a constant component and a variable component, with the size of the difference (Dn) between the cutoff threshold and the instantaneous value of the rotation time (tu) influencing the switching signal.

Abstract: A control system for use with a bidirectional motor connected to a motorized vehicle accessory to move the accessory a distance from a first position to a second position. The control system includes a detector responsive to control signals emitted from the motor during rotation, where the control signals indicate the amount of motor rotation. The control system also includes a memory that stores information used to represent the position of the accessory. Additionally, this control system includes a controller responsive to the memory and the detector. The controller provides an output signal to operate the motor based on the distance between a first position and a second position of the accessory as well as control signals that indicate the amount of motor rotation. The controller includes an adjustment routine that determines a correction factor that is applied to the output signal to compensate for inaccuracies in control signal detection.

Abstract: A control circuit for limiting the current flow to a direct-current driven motor, to reduce current spikes at motor start up, including a voltage-regulated, current-passing device for passing current from a direct voltage source to the motor, the device having a default configuration such as to permit full current flow there-across when the voltage is initially applied, a voltage drop device interposed the voltage source and the voltage-regulated, current-passing device responsive to the current flow to the motor and a variable-voltage output device responsive to the voltage drop developed in the voltage-drop device for providing a subsequently changing voltage for input to the current-passing device for limiting the current flow therethrough following initial application of the voltage.

Abstract: A bag neck tying device for tying a ribbon dispensed from a spool about a gathered neck. A pulley and proximity switch are mounted to prevent the completion of a tying cycle if a bag neck is not properly gathered and ready to be tied.

Abstract: A device for detecting the stop of a stepping-motor-operated damper for a refrigerator, the damper having a stepping motor, a baffle driven by the stepping motor, a rotation control unit for controlling the direction of rotation and the amount of rotation of the stepping motor. The device includes a memory unit for storing a set value for detecting a position where the baffle is stopped, a measuring unit for measuring an electrical drive signal provided when the baffle is being driven, a comparison unit for comparing the electrical drive signal with the set value, and a stop detecting unit for determining that the baffle has been stopped when the comparison unit determines that the electrical drive signal is larger than the set value, to output a stop signal.

Abstract: A system for creating a position reference signal includes a linear variable differential transformer (LVDT), a magnetically permeable core capable of entering and existing the chamber of the LVDT, a positioning means for moving the core in forward and backward directions through a home location in which the core is within said LVDT, and a signal conditioner means for receiving the signals from the secondary windings and outputting a value so that when the core approaches the home location from the forward direction, the value first changes polarity only when the core passes through the home location. Preferably, the value is always positive or always negative when the core is at a location outside of the chamber.

Abstract: An improved door edge safety sensor for use with an automatic door operator which uses a motor to move a door between open and closed conditions with a controller for controlling operation of the motor and, an improved sensor comprising a tactile obstruction detector for generating a safety signal, a door vibration detector for detecting movement of the door, a safety signal transmitter operable in response to detected door motion, and control electronics which monitor the obstruction detector and the vibration detector and direct the signal transmitter to reverse the motor upon the door engaging an obstruction which reverses the door to an upward direction.

Abstract: A power window apparatus for carrying out a safety control operation when an object is caught in the window, which apparatus is capable of setting a safety control mode disabling region to within the required distance exactly. The power window apparatus includes a motor rotation sensor for sensing a state of rotation of the motor, and a window movement sensor for sensing the amount of movement of the window. The object-caught state is detected on the basis of the rotational rate of the motor, and the absolute position of the window is detected on the basis of the detected amount of movement of the window. The safety control mode is disabled in response to the detected absolute position of the window. A reference value for detecting the object-caught state may be varied as the window approaches its fully closed position.

Abstract: A control circuit for controlling a vehicle window closing and door locking device, comprises a first circuit having three X-OR gates and one AND gate for determining the vehicle general conditions, a second circuit having AND gates and power transistors for determining the vehicle specific conditions, for energizing the individual window motors, and for activating the door lock solenoid. The windows will be closed and the doors will be locked if three conditions are met: (1) no one is seated inside the vehicle, (2) all doors are closed, and (3) the ignition key is not in the ignition.

Abstract: Apparatus and methods for positioning a drape covering for a window comprise an electric stepper motor and an automated control for actuating the electric stepper motor to move the drape to any selected position at any selected time and in any selected sequence of drape movements.

Abstract: An actuator employing a unidirectional electric motor driving a first rotating member connected to a second rotating member through a pivotable link of which a first end is connected to the first rotating member at a smaller distance from its axis of rotation than the distance between the point at which the second end is connected to the second rotating member and its axis of rotation. An enegerization circuit includes first and second limit switches through which the motor is alternately energized to rotate the second men%her in opposite directions to first and second limiting positions respectively.

Abstract: A control device for garage door opener to provide automatic reclose and safety reverse if obstruction occurs is disclosed. Photoelectric sensors are positioned across the door opening to detect the passage of a vehicle through the door and signal the device to reclose the door. The sensors also detect obstruction and reverse closing movement of the door or, otherwise, disable activation of movement. An oscillator causes the door to reclose if the door remained open for a predetermined time interval. Safety warning signal is generated shortly before the oscillator controlled reclosure.

Abstract: A universal electrical control selectively drives either plural motorized window operators for opening or closing one or more windows, or a motorized window operator and plural motorized locks for opening, closing and locking a window. The electrical control comprises an interface circuit for connection to plural output devices comprising either motorized window operators or motorized window locks. An input switch commands window movement to an open or close position. A control circuit is connected to the interface circuit and the input switch and includes an initialization mode for determining if each output device is a motorized window operator or a motorized lock, and output drive mode operable in response to a command from the input switch for driving the output devices through the interface circuit in a lock sequence or a window sequence dependent upon the initialization mode respectively determining if a motorized window lock is connected or is not connected to the interface circuit.

Abstract: A system for controlling power windows of vehicles includes a module mounted on a console between the driver and passenger seats of a vehicle having front and rear sets of power windows with a separate switch module for operating each rear window proximate that window. The console includes a pair of operating switches for the front windows and a rotary selector switch movable between first and second positions. When the rotary selector switch is in the first position, the front operating switches raise and lower the front windows and the rear operating switches raise and lower the rear windows. When the selector switch is in the second position, the rear operating switches are disabled as are the motors for the front windows, while the front operating switches are connected through to the motors to operate the rear windows.

Abstract: An automotive vehicle seat adjusting system according to this invention is constructed to move a seat by a drive circuit. It is also constructed to allow a driver to change, during movement of the seat, the moving speed of the seat as he likes. In the system of this invention, when a signal indicative of the feeling of the driver to the moving speed of the seat is inputted, fuzzy inference is performed in accordance with a speed decision rule to decide an optimal moving speed. The optimal moving speed is decided by a fuzzy inference processor on the basis of the inputted feeling signal and an actual moving speed. The drive circuit is controlled in accordance with the decision at the fuzzy inference processor, whereby the seat is allowed to move at the optimal moving speed.

Abstract: In an electric drive arrangement for a cord winding and dewinding winch (22), in particular for cord-operated screening and opening/closing devices for windows and doors, in which the operating cord (4) is connected with said device for moving it in one direction when winding up the cord on said winch (22), the latter being turned in one direction by means of an electric motor (12), while movement in the other direction is effected by a spring force acting on the device while dewinding the cord from the winch (22), the latter being turned by the electric motor (12) in the opposite direction, the winding and dewinding winch (22) for the cord is combined into a drive unit with the electric motor (12) and connected thereto by a transmission device, which is influenced by a braking force, means being provided for stopping the electric motor in response to suspension of the tension in the cord (4) caused by the movement in said other direction effected by the spring force, when dewinding the cord, said stopping me

Abstract: A control device for a parking brake for a vehicle includes an electric motor which rotates a crank to activate the parking brake with the provision of a disk having two concentric conductive tracks which are interrupted by an insulating space; the disk is rotated by the drive shaft to control the supply of current for driving the electric motor.

Abstract: An airflow register for an air conditioning system for an enclosure such as room within a house or an office within a building. The register includes a series of louvers which can be located in either an open position or a closed position. The open position permits air to flow through the register and the closed position prevents air from flowing through the register. Louvers are to be movable by a motor with this motor being operated by a light sensor mounted on the exterior surface of the register. Upon an observable lightened environment being detected by the light sensor, the motor is activated which will locate the louvers in the open position. Upon an observable darkened condition being sensed by the light sensor, the motor is activated which will locate the louvers in the closed position. A flow limiter may be used to keep the louvers slightly open when in the closed position to have some heated air enter the room when the ambient temperature is severely cold.

Abstract: A system for detecting objects in the path of a power operated, movable door operating in a mass transit vehicle, which would obstruct door closing. The system also includes an integral method for detection of a "free wheeling" door occasioned by failure of the door mechanical drive. Method and apparatus disclosed utilize door handle locating devices such as electrical switches located at predetermined points along the door closure track. A combination of door locations along the closure track centrally define positions signaling either door linkage failure with attendant "free wheeling" door, and/or door obstruction, in each case, the system disclosed prevents train motion until the improper door condition is remedied. The combination provides a reduction in passenger hazards occasioned by train movement with defective operator linkage and/or door obstruction due to trapped passengers or other impediments to door closure.

Abstract: A vehicular sun roofing apparatus including a roofing panel (3) for tilting up and sliding and a sunshade member (4) for sliding is provided to open/close an opening (2) formed on a vehicular roof (1). The panel (3) is operated by an electrical means in response to input acts on a panel open/close switch (19, 20), and the sunshade (4) is operated by an electrical means in response to input acts on a sunshade switch (21, 22), wherein control devices (23, 40) for actions of the panel (3) and sunshade (4) are provided, and an ON act on the panel opening switch (19) causes not only opening action of the panel (3), but also selective opening action of the sunshade (4) to arrive at a predetermined point, depending on a location of the sunshade (3) at the switched moment.

Abstract: A garage door control device that will automatically open or close depending upon conditions, the device having a motion detector responsive to vehicle space for actuating security lighting and warning measures, and a sound detector coacting with the motion detector and a garage entry door sensor to provide enablement of the door closure activator during respective exiting and non-exiting modes.

Abstract: The device comprises at least one lead screw (2) driving a sliding yoke (23) whose guide bar (22) is mounted on a rocker arm (19). The lead screw actuates a switch (27) by means of a cam (28) via the sliding yoke. A deliberate action on the rocker arm moves away the sliding yoke (23) which is brought instantaneously into initial position by a spring (25). The lead screw (2) is for preference disengageable by means of an arm (29) driven by the axle of the sliding yoke. This arm provides an angular positioning of the lead screw by acting on a heart-shaped cam (10).The device permits rapid, sure and precise setting of the stopping points of a motor.

Abstract: A safety stopping device particularly adapted for use with an electric steel rolling door is disclosed which comprises a transmitter mounted on a base plate of the rolling door and a receiver mounted on and directly connected to the electric motor used for driving the rolling door. In addition, various transmit switches are mounted on the underside of the aforementioned base plate to indicate to the transmitter when an obstruction is encountered. Upon occurring an obstruction, a signal is transmitted to the receiver whereupon the flow of current to the electric motor is interrupted to cause the electric rolling steel door to automatically stop.

Abstract: It is proposed that the utilization period of the awning be increased in connection with automatic or manual manual control means in that the awning is preferably incrementally retracted as a function of the magnitude of the wind velocity, as determined through measurement, with the wind velocity being determined in corresponding graduations, and, as a function thereof, in that the control unit for the awning drive motor moves the awning to intermediate awning positions which have priority over all other control influences. In addition to the limit switches, which are present anyway and which indicate the "fully retracted" or "fully extended" positions, a plurality of intermediate sensors, corresponding to the number of desired increments, are disposed to determine the intermediate positions, with the signals output by the intermediate sensors, which indicate the actual position of the awning being compared with wind-velocity-determined awning setpoint position signals.

Abstract: The present invention is an automatic door operator which includes an obstruction detector for at least stopping the motor when the detected motor speed indicates a motor torque greater than the selected closing torque limit while closing the door, and for at least stopping the motor when the detected motor speed indicates a motor torque greater than the selected opening torque limit while opening the door. The motor speed is detected based upon a predetermined count of electrical pulses corresponding to motor shaft rotation in order smooth noise. Selection of the number of pulses per rotation enables the same controller to control motors operating on either 60 Hz or 50 Hz power. A travel count of rotation pulses permits identification of a plurality of regions in the opening and closing travel of the door and corresponding adaptive torque limits. The travel counter may also be employed for detection of the fully opened and fully closed limits.

Abstract: An electrically controlled shift actuator (2) of the type having a rotatable worm gear wheel (22) driven by a motor (M) to a predetermined one of at least two rotational positions, the wheel having an eccentric drive pin (26) moving a reaction member (14) to preload a spring-charged (10) shift member engagement means comprising a slide (6) and ball (8) directly engaged with a shift member (16) to move a shift member to a predetermined one of at least two positions. The control includes a selector switch (36), a pair of position sensing switches (28,30), and an electrically controlled switch (62) for alternatively connecting the motor (M) to a power supply (38) or to a dynamic braking circuit (66-68), but never to both simultaneously.

Abstract: A power seat apparatus which comprises motors for moving a seat in respective direction, relays for changing rotational directions of the respective motors, a preset memory for memorizing a seat position suitable for respective drivers, a memory drive circuit for driving the motors so as to move the seat into the memorized position automatically according to data memorized in the preset memory, a manual drive circuit for driving the motors according to an operation of a manual switch and a control mechanism. The control mechanism detects the contact fault in the relays, or controls the motors accurately by counting the number of inertial rotations as a proper directional rotation without misjudgement even if the manual switch is operated in the reverse direction when the motors are driven automatically in one direction.

Abstract: A positioning apparatus for positioning a reciprocally movable member, such as a guide member for a sheet of recording paper, between a reference position and a predetermined position. The apparatus includes a detector for detecting that the movable member is in the proximity of the reference position, and a counter for counting the amount by which the movable member is shifted while the detector is detecting that the movable member is in the proximity of the reference position. A controller stores the value counted by the counter, and controls drive of the movable member when the movable member is being returned to the reference position based on the count in the counter and the stored count value. A second counter may be provided to count the amount by which the movable member is shifted from the reference position to the predetermined position.