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: This invention relates to a skew motor driving circuit of satellite video receiver for eliminating a remaining voltage of ripple form generated at skew motor in a satellite video receiver such as SVR and the like. The invention is an apparatus for receiving a satellite video, a third transistor Q3 for executing on/off operation in response to control signal controlling a skew motor, a first transistor Q1 for supplying/cutting a skew motor input power 1 in conjunction with the operation of the third transistor, a fourth transistor Q4 for eliminating a remaining voltage remaining upon cutting a driving voltage supplied to said skew motor by an operation being contrary to the operation of said first and third transistors, and a second transistor Q2 for supplying skew pulses to the skew motor in response to the skew pulse signal.

Abstract: An on-car motor driving apparatus is equipped with a motor for moving a moving unit such as a window of a motor car, a motor driving controller which controls the revolution, stop, and rotational direction of the motor, and a current measuring and comparing device which measures the variation in current per unit time of the motor and compares the measured variation in current with a preset value. The on-car motor driving apparatus stops the revolution of the motor and/or reverses the rotational direction of the motor through the motor driving controller. The apparatus is further equipped with a voltage measuring device for measuring motor driving voltage and a voltage-based time setting device which changes the length of the unit time in accordance with the driving voltage value measured by the voltage measuring device. Line voltage is supplied to a differential amplifier only when the line voltage is supplied to the motor.

Abstract: A lift type tailgate on a passenger van type vehicle body is operated by an electric motor powered actuator with an electronic control circuit utilizing a microprocessor operating under program control to respond to user-initiated opening and closing signals to move the tailgate in the selected direction. In the control circuit, feedback information to the microprocessor indicative of tailgate position is provided by a potentiometer coupled with the actuator motor and the microprocessor is programmed to operate with this information to stop the tailgate at a wide open position, a partially closed position and a fully closed position. Obstruction detection is performed by the microprocessor using an obstruction detection circuit and additionally by monitoring the position signal input from the potentiometer to stop the tailgate on encountering an obstacle.

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: 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 device is described for controlling the operation of an electric motor for driving the arm of a windshield wiper of an opening window, particularly the rear window of an automotive vehicle. The device has a control unit for supplying power to the motor. The operation of the motor is controlled by a key contact of the vehicle and a control element. The key contact and the control element are under user control and are connected in series between a power supply source, the control unit, and a contact for detecting the opening or closing of the window. The device is further characterized in that the open window detection contact is connected to a control unit data input so that it controls restarting the motor only after opening and closing of window and only after reinitialization of the control element by interruption of the control element and by a new user action on the control element.

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 thereacross 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 method for operating power window apparatus with a safety device which stops the closing operation of the window in response to the detection of an object-caught state, which prevents the incomplete close of the window, and can accurately detect the object-caught state. The opening/closing position of the window is detected by counting pulses generated as the window moves. A region where a safety control can be carried out is determined on the basis of the detected opening/closing position. When the window reaches a position near a position where the window is fully closed, the count indicative of the opening/closing position detector is reset. The resetting operation is carried out so that a time point where the relative speed of the window is reduced is set at the fully closed position of the window.

Abstract: An improved window operator has an electrically controlled drive for moving a window between opened and closed positions in response to a command. A plurality of switches are provided for manually or remotely commanding movement of the drive to move the window to a select desired position between the opened and closed positions. A position sensing routine senses actual position of the window between the open and closed positions. The position sensing routine includes a timer for storing a value representing actual position. The value is selectively incremented or decremented at a select rate in response to duration of operation of the drive to move the window between the open and closed positions. The control senses electrical power supplied to the drive. An adjustment routine adjusts the select rate of the timer in response to electric power deviating from a select desired power level.

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 is controlled by comparing present rotational frequency of a motor with a reference value selected depending on a present position of a window glass among plural reference values predetermined at every position of the window glass, supplying an electric current to the motor in the closing direction of a window when the present rotational frequency of the motor is larger than selected reference value, supplying the electric current to the motor in the opening direction of the window when the present rotational frequency is not larger than the selected reference value and the window glass does not arrive in a full-closed position, and cutting the current supply to the motor when the present rotational frequency is not larger than the selected reference value and the window glass arrives in the full-closed position.

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 reversing circuit including an obstruction-sensing device adapted to be used with an electrically powered door or gate, which when connected to a standard motor operator which utilizes an A.C. control voltage and has a two or three button control station (open, close and optional stop) gives the operator capability to reverse power the door or gate should it engage an obstruction when closing. The reversing circuit is connected to the pushbutton wiring of the motor operator and utilizes the control voltage that appears between the stop-open terminal pair when the door is not opening nor at full open, and that appears between the stop-close terminal pair when the door is not closing nor at full close, as a limited power supply for powering the circuit. Full closure of the door or gate deactivates reopening section of the circuit so as to preclude opening of the door from outside by activating the sensing device.

Abstract: A motor driven power door control system for a vehicle door includes a door position sensor that generates a door position signal for each predetermined distance of door movement so that the period of the door position signal is a measure of door speed. The motor control voltage is variably controlled to a controlled value to establish the door speed at a desired speed value. A door position signal period stall time is determined that is a predetermined function of the controlled value of the motor control voltage so that the stall time is adapted to the motor torque. An obstructive load is indicated when the period of the door position signal exceeds the stall time.

Abstract: A method and apparatus for automatically operating the controls of a vehicle and, more specifically, a gearshift lever pattern in a manual transmission to determine an envelope of movement of the gearshift lever, is provided. X and Y motors can be operatively attached to a manual gearshift lever with appropriate encoders to determine positions. A computer circuit controls an automatic learning cycle of movement of the gearshift pattern, while appropriately storing the spatial positions of the gearshift lever, to thereby enable an automatic driving of the gearshift during an automatic operation of the vehicle in a controlled situation.

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 motor is controlled to regulate the speed of a vehicle sliding door whose movement and speed are monitored. The motor control voltage is incrementally adjusted in direction to reduce a sensed speed error only if the door has moved a required distance while the door speed has been continuously outside of the desired speed range since the last incremental adjustment to the control voltage.

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: The door can be safely and exactly opened and shut even when the door opening and shutting stroke value is not memorized in the non-volatile memory. The door opening and shutting stroke value measured in the setting time of the automatic door is memorized in the non-volatile memory 14. Then, the memorized door opening and shutting stroke value is read in the plant memory 15 for the door stroke value of the micro-computor 12. In the automatic door for opening and shutting the door 5 according to the door opening and shutting stroke value, when the door opening and shutting stroke value is not memorized in the non-volatile memory 14 after the power supply, the door 5 is opened and shut at the low speed to measure the door stroke value. And the door stroke value is memorized in the plant memory 15 for the door stroke value of the micro-computor 12 as the door opening and shutting stroke value, and the door 5 is opened and shut in accordance with the memorized value.

Abstract: An adjustable limit switch mechanism for controlling the operation of an electric motor of a garage door opener over a selected range of movement including a motor driven threaded shaft supporting at least one switch actuator which is adjustably positionable and restrained from rotary movement while being axially translated by rotation of the shaft. A limit switch is mounted adjacent the threaded shaft so as to be actuated as the switch actuator is translated axially on the shaft.

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 automatic door operator with a continuously monitored supplemental obstruction detector. In a first embodiment, the obstruction detector is a radiant beam obstruction detector that transmits a beam of modulated radiant energy across the door opening. A safety signal generator produces an active safety signal only on unobstructed receipt of radiant energy by a receiver. Failure to receive the active safety signal when the motor is closing the door at least stops the door. A two wire cable, which carries both power and the active safety signal, connects the supplemental obstruction detector to the automatic door operator. Constant activation of a portable transmitter or of a local push button can override the supplemental obstruction detector to close the door. An alternative supplemental obstruction detector includes a safety edge having a compressible tube disposed on a leading end of the door. Plural conductors change their conductive state upon compression of the compressible tube.

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 garage door operator has a microcomputer based control which is programmed to measure door position from full open position by counting motor revolutions and to determine motor speed and deceleration for each revolution. The program learns the open and closed position limits as well as force sensitivity limits for up and down operation with minimal user input. During normal door operation the closed limit and the sensitivity limits are adaptively adjusted to accommodate changes in conditions. The lowest up and down motor speeds in each operation are stored for comparison with motor speeds in the next like operation for obstruction detection. Motor deceleration is also monitored for obstruction detection. For a more sensitive obstruction detection during closing, the motor speed is mapped for each revolution for the last several inches of closing.

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: An electric-motor-driven window operating system for installation in motor vehicle doors with a drive unit (2) arranged in a damp-proof housing (1) and connected to a rotation speed sensor (30) and controllable by an electronic control and regulating unit (4). The electronic control and regulating unit (4), the drive unit (2) and the rotation speed sensor (3; 30, 31, 32) are arranged in a common damp-proof housing (1).

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: An automatic door operator with a continuously monitored supplemental obstruction detector. In a first embodiment, the obstruction detector is a radiant beam obstruction detector that transmits a beam of modulated radiant energy across the door opening. A safety signal generator produces an active safety signal only on unobstructed receipt of radiant energy by a receiver. Failure to receive the active safety signal when the motor is closing the door at least stops the door. A two wire cable, which carries both power and the active safety signal, connects the supplemental obstruction detector to the automatic door operator. Constant activation of a portable transmitter or of a local push button can override the supplemental obstruction detector to close the door. An alternative supplemental obstruction detector includes a safety edge having a compressible tube disposed on a leading end of the door. Plural conductors change their conductive state upon compression of the compressible tube.

Abstract: An apparatus for operating a roof panel (1) of a sliding roof or a sliding/tilting roof having a motor (2) for moving the roof panel, a control unit (8) for energizing the motor and a setting means (11) for setting a desired position of the roof panel. In order to move the roof panel (1) to a desired position indicated by the setting means (11) the control unit (8) determines an energizing period from the expected speed of movement and the starting position of the roof panel (1). The motor (2) has to be energized during this energizing period to reach the desired position. A sensor (9) is provided for detecting the closed position of the roof panel as fixed initial position.

Abstract: A sunroof motor having a roof lid position detector which comprises a motor part, a roof lid detective disc to be turned as much as an angle in proportion to an amount of movement of a roof lid driven by the motor part, a contact plate having contacts and disposed on the roof lid detective disc, a printed wiring board mounted with a relay to supply or shut off the electric power to the motor part and formed with a motor driving circuit which is provided with board-side contacts to be in contact electrically with the contacts of the contact plate for detecting the roof lid to arrive at the full-opened position, full-closed position and so on, for example.

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 dc motor switching circuit is disclosed, and the circuit includes: a forward revolution switching circuit section 1; a reverse revolution switching circuit section 2; a constant voltage section 3; a switching circuit section 4; an automatic circuit section 5; a manual circuit section 6; a resetting circuit section 7; and upper and lower limit detecting sections 8a, 8b. The dc motor switching circuit of the present invention can be applied to the power window switch of an automobile in a simple manner. Even in the case where upper and lower limits are set up as in a closing/opening device of a garage shutter, a universal application is possible. In all such cases, its constitution is simple, and the circuit is capable of preventing any undesirable result (such as degradation, burning and the like). Further, the automatic and manual operations can be carrier out in a convenient manner.

Abstract: A motor controller for reversibly driving a member to be driven along a predetermined path of travel is capable of sensing the speed of the member to be driven and to compare with a predetermined speed level and to adjust the motor drive until the rate of advancement of the driven member corresponds with the predetermined speed level. The motor drive means is completely deactivated if the actual speed should not reach a predetermined start-up threshold within a selected time interval after the motor is initially turned on or should drop beneath the stay-on threshold level which is set beneath the desired speed. The motor drive can also be regulated to run at different reduced or normal speed settings depending upon its intended application.

Abstract: An automatic positioning apparatus which comprises motors for actuating a vehicle mounted device, sensors for detecting position of the vehicle mounted device such as a seat, steering wheel or the like, and a control means which memorizes the position of the vehicle mounted device and drives it into the memorized position automatically and which sets a motor-suspensive zone, a renewal-prohibitive zone and a readjustment prohibitive zone in the vicinity of the memorized position, and stops the motors when the vehicle mounted device enters the motor-suspensive zone, prohibits to renewal the memorized position when the vehicle mounted device is within the renewal-prohibitive zone and prohibits an automatic action within the readjustment-prohibitive zone.

Abstract: The invention is concerned with systems for deploying and parking retractable members such as headlamps or windshield wipers of automotive vehicles. In order to reduce the reaction time when a command is given that countermands a command which is in course of execution, elements are provided for detecting the current state of the system using end stop detectors. The operating program for the system, which controls the parking and deployment functions, is directed towards a parking step or a deployment step, in such a way that the motor currently in operation is immediately reversed (optionally after being braked), when a command is received which reverses the command currently being executed, whether or not the moveable element controlled by the motor has reached the end of its travel.

Abstract: Apparatus for repeatedly sweeping a snow-gun nozzle through a desired angular range to more evenly distributed man-made snow produced by a snow-gun. Such apparatus comprises a bi-directional electric motor for driving a rotatably mounted snow-gun support in opposite directions about an axis of rotation, a pair of mechanical stops for limiting rotational movement of the snow-gun support to a predetermined angular range which defines a maximum sweep angle for the nozzle, and circuitry for sensing motor current. A comparator circuit, operatively connected to the output of the current-sensing circuit, functions to reverse the current flow through the motor, thereby changing the direction of rotational movement of the snow-gun support, whenever the current through the motor exceeds a preset threshold level. Such level is reached whenever the support's rotational movement has been limited by one of the two mechanical stops.

Abstract: A device for automatically expanding and contracting an antenna having a rotary member for moving a flexible rodlike member that is coupled to the antenna for expanding and contracting the antenna. A worm is driven by a motor to rotate about a motor axis and an intermediate gear unit having a worm wheel is formed unitarily with a small diameter gear, the worm wheel being engaged with the worm and the small diameter gear being engaged with the rotary member for rotatably driving the rotary member. A gear unit support frame is provided for supporting the intermediate gear unit and a support shaft is fixed to a casing member and coupled to the intermediate gear unit, the intermediate gear unit and the gear unit support frame being axially movable along the support shaft in a direction substantially perpendicular to the motor axis.

Abstract: An arrangement for detecting a motor overload condition by examining the phase angle relationship between the motor voltage and current. As the load increases, the phase angle difference approaches zero. By measuring the zero crossings of the voltage and current and providing a signal representative of the time difference between these crossings, the phase angle relationship is determined and, accordingly, so is the motor load. Specifically, a saturable ferromagnetic core is utilized to detect the current zero crossings.

Abstract: Operation of eight motors to control two power seats of a vehicle is effected by four rocker switches and a seat select switch. Each seat can be moved in eight different directions.

Abstract: An apparatus for controlling a power window capable of maintaining an energized state of the motor to move a window glass, detecting a locked-rotor current flowing through the motor when the window glass reaches a limit position, and de-energizing the motor to stop the movement of the window glass when the locked-rotor current becomes larger than a predetermined value. The period of time for energization of the motor is longer than a period of time from a moment at which the "ON" operation of the automatic mode switch is cancelled to a moment at which the window glass reaches the limit position. It is thereby possible to automatically de-energize the motor when the window glass reaches the limit position, even if the locked-rotor current does not become larger than the predetermined value at this time due to the influence of temperatures or other causes.

Abstract: A motor-driven antenna including a logic circuit for stopping a motor which drives a rod antenna to be extended and retracted. The logic circuit is activated when a voltage corresponding to an electric current of the antenna motor reaches a predetermined level.

Abstract: Method and device for controlling a side support in a powered seat, in which the side support device is controlled in its opening/closing motion in order that it is not moved repeatedly sensitive to each of acceleration being applied to the seat during driving on a curved road, by virtue of a standard checking process for determining an excessive acceleration, and then a short and long hold time system for holding the side support device in unmoved state against repeated or plural intermittent occurrences of accelerations being applied to the seat.

Abstract: A control apparatus suitable for use in a power window regulator is provided which has an electric motor for selectively moving a window glass in either one of two directions in which the window glass is fully closed and opened when an automode switch is first turned on. An energized state of the motor is held until the window glass reaches a position where it is fully closed or opened.

Abstract: A raindrop detection wiper is provided with a raindrop detector for detecting a raindrop, a wiper motor for actuating a wiper blade, an automatic stop mechanism for stopping the wiper blade at a predetermined position, a control mechanism comprising a current detector, a memory and the like for operating intermittently or stopping the wiper motor in accordance with a signal from the raindrop detector and memory data stored by the memory. According to this invention, it is possible to wipe the wiping surface automatically by detecting the raindrop and drive current of the wiper motor even in a very light rain.

Abstract: A method and device for controlling a headrest provided on a seat back of a seat, in which there is arranged an over-load detecting system for detecting an over-load state of a motor and automatically stopping the motor if the over-load state is detected during displacement of the headrest to a use position, or automatically driving the motor to return the headrest to a use position if the over-load state is detected during displacement of the headrest to a non-use position. This allows for removing an object caught in between the headrest and seat back with much safe.

Abstract: An apparatus for controlling a window regulator connecting semiconductor switching elements which are turned ON or OFF depending on the ON-OFF state of operation switches and relay coils which are energized or de-energized depending on the ON-OFF stage of semiconductor switching elements connected to a power source through the operation switches. When the operation switches are OFF, a voltage is never applied to the semiconductor switching elements and therefore there is no fear of malfunction of semiconductor switching elements due to noise.