Abstract: A slidable roof device for a motor vehicle is provided wherein a roof panel opening of a motor vehicle is openably covered by a flexible member. A front portion of the roof panel opening can be uncovered when a front portion of the flexible member is moved in the rearward direction of the vehicle body. A tilt mechanism is provided at a rear portion of the flexible member so as to tilt up the rear portion thereof and to form at least a clearance between the rear portion of the flexible member and the vehicle roof panel, thereby making sure that rear seat passengers can enjoy more a comfortable ride in the vehicle. Further, the tilt mechanism can be made to operate when the front portion of the flexible member is moved rearwardly so as to tilt up the rear portion of the flexible member to form at least a clearance between the rear portion thereof and the vehicle roof panel when the front portion of the flexible member is opened.

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: 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 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: 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 "memory" mirror system having a mirror 19 mounted within convex-shaped mirror movement boundaries, two constant speed motors 16,18 each controlling an axis of mirror movement, position feedback signals 26,28 from each motor, push button inputs 12 and an electronic controller 10, is provided with automatic mirror repositioning that drives the mirror from a start position to a "memory" position in minimum time without colliding with any mirror movement boundaries by turning ON the motor, in the direction of the target, whose movement axis is the greatest distance from the target and turning ON the other motor, in the direction of the target, if the direction toward the target is also toward the center of the mirror movement pattern (i.e., away from the nearest boundary).

Abstract: A power sunroof for a motor vehicle is disclosed, which comprises a structure for defining a sunroof opening in a roof of the vehicle; a lid sized to close the sunroof opening, the lid being provided around its periphery with a weather strip; a mechanism for permitting the lid to have a tilt-up position, a full-close position, a flap-down position and a full-open position, the tilt-up position being a position wherein the lid is tilted up with respect to the sunroof opening, the full-close position being a position wherein the lid is received in the sunroof opening with the weather strip compressed therebetween, the flap-down position being a position wherein the lid is tilted down with respect to the sunroof opening, and the full-open position being a position wherein the lid gets under the roof fully opening the sunroof opening; an electric drive motor for driving, when energized, the lid to assume the tilt-up, full-close, flap-down and full-open positions by using an electric power; and a controller for co

Abstract: An electric motor control unit for use in a vending machine includes a sealed housing containing an electric motor drivingly connected through an eccentric and a cam follower to a magnetic switch actuator operatively associated with a sealed, magnetically operated reed switch. Energization of the electric motor rotates an output shaft carrying the eccentric for one cycle of operation, whereupon the motor is deenergized to complete the cycle.

Abstract: An electric system for use in a motor vehicle. The system includes a battery mounted in the vehicle body; a controlling device mounted in the vehicle body and having first and second switches; and a positive/negative switching device mounted in the vehicle body and electrically connected to the battery and the controlling device. The switching device has an output member which includes first and second output parts. The switching device assumes, when the first switch of the controlling device is turned ON, a first condition wherein the first and second output parts are charged positive and negative respectively, and assumes, when the second switch of the controlling device is turned ON, a second condition wherein the first and second output parts are charged negative and positive respectively. First and second electric devices are mounted in the door and have an input member which includes first and second input parts.

Abstract: An apparatus for adjusting a computer work station to individual needs including a frame having a keyboard support attached thereto. A vertical adjustment mechanism operatively attached to the frame permits the keyboard support to be adjusted vertically up or down. Also, a pivotal adjustment mechanism is operably attached to the frame and to the keyboard support for permitting the keyboard support to be adjustably pivoted about a substantially horizontal axis. A monitor support is provided and has a horizontal adjustment mechanism operably attached to the frame for selectively moving a monitor support toward or away from the keyboard support and the monitor support also can be adjusted vertically by a separate vertical adjustment mechanism. The adjusting mechanisms for the keyboard support and the monitor support are electrically controlled by the computer user. An adjustable wrist support and an adjustable foot support are also provided.

Abstract: Operation of eight motors to control two power seats of a vehicle is effected by three rocker arm type switches, one "joy stick" type switch and a seat select switch. Each seat can be moved in ten different directions.

Abstract: Method and device for controlling a slide motion of a vehicle seat, wherein when the seat is moved from a seating position to a backward position, the rotation number of a motor causing such movement is counted up from zero and memorized by a counter, so that the seat is returnable to the seating position precisely in accordance as the counter counts down that memorized rotation number to zero. This control is effected by switch means electrically arranged with the motor via electric circuits, and the counter is reset to zero every time of initial operation of the switch means, thus allowing free setting by different occupant of the seat positions without need for hitherto inputting works inherent in computer control.

Abstract: A control for a window operator is operable to control incremental movement of a window. The control includes means for developing a command to selectively move the window in a direction to an open or closed position, and means for determining when a plurality of motor drives have moved the window a preselected incremental distance. Means are coupled to the developing means and the determining means for energizing each of the motor drives if a command is developed, until the motor drives have moved the window the preselected incremental distance and thereafter deenergizing the motor drives until another command is received to move the window a subsequent incremental distance in the selected direction.

Abstract: A method and device for controlling a headrest, in which the headrest is controlled its displacement between the use and non-use positions and its fore-and-aft adjustment, independently of each other, and the corresponding displacement ranges and fore-and-aft adjustment ranges of the headrest are detected and limited by a headrest angle detector.

Abstract: An automatic door includes a control program microprocessed in commensuration with the requirements of a servo-controlled control network of an automatic door and recorded in a read only memory (ROM), whereby upon an initiation by an electric current, a central processing unit (CPU) will give series of instructions to automatically sense the location of the automatic door and will calculate the errors after finishing each operating cycle of the moving door for re-setting the positioning point for each operation mode of a next door movement, and will always monitor the running speed of a motor for driving the door to be compared with a pre-determined value memoried in the ROM so as to exert a warning alarm and to temporarily stop or finally stop a door for safety purpose.

Abstract: The electric rearview mirror system comprising a position sensor which outputs a position signal showing the rotational position of the mirror body, memory device which stores the position signal from the position sensor at a prescribed sampling period, and a motor control circuit which judges the rotational direction of the mirror body based on the change with time of the position signal stored in the memory device and turns off the motor when the judged direction of the motor is opposite to the rotational direction of the mirror body due to the mirror driving mechanism.

Abstract: A control apparatus is placed in a drive circuit of a motor of an electrically driven antenna. The drive circuit is provided in parallel with a transmitter-receiver circuit of a transmitter-receiver, and an operation unit is provided so that control instruction can be given by manual operation to a control apparatus. The electrically driven antenna is extended or contracted by an amount determined by the instruction that is given from an operation unit interlocked with a turn-on or off of the power source of a transmitter-receiver. The control apparatus includes, for example, switch plates which are moved by a small motor. Variable contact pieces for the switch plates are adjusted by a manual operation unit to obtain a suitable control instruction through mechanical operation. Alternatively, the control apparatus can be operated electrically by using a control circuit and operation unit.

Abstract: An electrically operated drawing system for drawing and undrawing curtains includes an electric motor, a clutch having a solenoid, a rotation detector for detecting rotation of the electric motor, an operating switch for outputting command signals, and a control logic circuit. The control logic circuit controls the rotation of the motor and the activation of the clutch. The clutch is used to operatively engaged the rotating motor with the curtains to thereby draw and undraw the curtains. The clutch includes a first spur gear drivable by the electric motor and a second spur gear operatively connected to the curtains. The clutch further includes an arm pivotally mounted to the second spur gear and a solenoid connected to the arm. A movement of the solenoid cause a movement of the arm to operatively engage the first and second spur gears.

Abstract: A mechanism which engages the pull-cord that opens and closes draperies, whereby the mechanism possesses a unique motor control for its automatic operation by a lamp timer (any of the commercially available clock actuated switches which are used in many households to automatically turn lamps ON and OFF at desired times). An alternate control system whereby the mechanism may be operated by a wireless remote control system in concert with the lamp timer. An adjustable means whereby the draperies may be opened and closed to any of two independently selectable positions within the means of the drapery rod. An easy to install mounting bracket with an easy to adjust tension means for driving engagement and hand-operation of the pull-cord.

Abstract: A programmable automatic positioning chair for medical application. The chair has moveable support surfaces which are driven by electric motors to preprogrammed positions. Motor speed is determined by measuring the motor current, and the motor speed is integrated by a microprocessor to produce a computed value of surface position. The chair operates "open loop" without any feedback from position sensors.

Abstract: A rod antenna control system for automobiles wherein electric current is supplied continuously to a motor which pushes up an antenna motor when a current below a predetermined value is flowing to the motor, and the current is supplied intermittently to the motor when a current above a predetermined value flows to the motor, and whether or not the electric current is over or below the predetermined value is determined by integrating the motor current for certain period of time and comparing such integrated value to the predetermined value.

Abstract: In a grinder having a reciprocating table, a pair of oppositely arranged traverse potentiometers are actuated by the table, and in each direction, the respective potentiometer produces an increasing voltage to reverse the table. A pair of remote potentiometers are arranged respectively opposed to the traverse potentiometers, and are manually set to thereby determine the points of reversing of the table. Signal LED's indicate the position of the table, and these are controlled by signal potentiometer that is driven with the traverse potentiometers. Manual switch means enables the operator to selectively run the table past the normal points of reversal set by the remote potentiometers. Means is provided for slowing the speed of movement of the table at the end of its travel to minimize inertial shock.

Abstract: There is disclosed a safety apparatus for a motor driven window that comprises an elongated sensing mechanism that extends substantially across the width of a window aperture and along that side of the window aperture toward which a closing, motor driven window moves. Such elongated sensing mechanism is comprised, at least in part, of a piezoelectric cable for generating electrical pulses upon an obstruction extending across the path of the closing window being pushed against the sensing mechanism by the closing window. Coupled to the motor driven window is an electric motor that is connected so as to be responsive to the electrical pulses generated by the piezoelectric cable for automatically reversing the direction of rotation of the electric motor.

Abstract: A self-contained electronic air register controller can easily be mounted directly onto the outside of an air register. When so mounted, the controller engages the register's actuating lever and permits automatic opening and closing of the air register by way of simple programming instructions and/or by way of a temperature sensor. The controller comprises a small battery, a miniature electric motor with a gear/linkage mechanism operable to engage with and to move the register's actuating lever between its OPEN and SHUT positions, and a quartz-clock-based programming means.

Abstract: An automatic-door lock system in which an endless belt running round a driving pulley driven by an electric motor and a driven pulley spaced apart from the driving pulley, comprises: means for issuing a pulse signal proportionate to a speed of a door member; an automatic door controller which receives the pulse signal to determine the condition of the door member in its position, travel direction and speed on the basis of the pulse signal, and numerically controls the electric motor; a lock mechanism for locking the door member, the lock mechanism having an electromagnet element which is so energized as to attract the driven pulley to its stationary member to make it possible to lock up the door member; and an electromagnetic lock controller for permitting a current to flow through the electromagnet element at a time when the automatic door controller determines that the speed of the door member is reduced to zero in a closing area of the door member.

Abstract: A device for driving a roof-hatch includes a forwardly and reversely rotatable motor, an operation switch, a reduction mechanism having a friction clutch, and an auto-stopping device. The device makes it possible to facilitate the operation for opening or closing the roof-hatch and to prevent trouble in the running of the vehicle.

Abstract: A mirror control system for electrically powered and positioned mirrors (FIG. 1) of the "memory" type for, for example, moving an automotive side view mirror from its current position to a desired "memory" position, and a special algorithm therefor (FIG. 2), which initially moves the mirror toward the final, desired position at a forty-five (45.degree.) degree angle to the vertical and horizontal axes (NE, NW, SW or SE; FIG. 6), for a mirror whose two directional motors have equal speeds (X=Y). If no obstruction (e.g., the mirror's edge) is encountered (FIG. 3), the mirror is moved by both motors until either the vertical or horizontal axis of the final position is encountered, at which axis intersection point the mirror is moved by only the appropriate one of the motors until the final point along the remaining axis is reached; this is the "normal" mode of the algorithm. However, if an obstruction is encountered (left side of FIG. 2; FIGS. 4 and 5), the mirror is moved at a 45.degree.

Abstract: The present invention is an automatic garage door operator with a two button portable controller enabling a secure mode and control of a load remote from the door operator. In accordance with the normal operation of the secure button, actuation when the garage door is closed toggles a secure mode between secure and non-secure states. In the secure state the automatic garage door operator does not move the door upon receipt of a door signal. To open the door when in the secure state the operator must first press the secure button to enter the non-secure state and then press the door button to open the door. The secure button has a secondary function when the garage door is open and the secure state is prohibited. Actuation of the secure button when the door is open toggles the state of a load remote from the automatic garage door operator between an on state and an off state. This control is achieved via a signal modulated on the electric power main.

Abstract: A motor actuator for use in an automobile air-conditioner for actuating air-mix door, includes an electric circuit for controlling the rotational speed of a motor depending on various conditions such, for example, as a vehicle compartment temperature, and a mechanical limit switch for limiting or restricting the extent of angular movement of the air-mix door, or an electric circuit for the limitation of the angular movement of the air-mix door. According to a preferred embodiment, a built-in switching unit having a mechanical switch disposed in a first housing for producing control signals for various components for the air-conditioner, and a motor actuator having a motor and an electric circuit disposed in a second housing are detachably assembled together by a locking lug and a mating retainer recess.

Abstract: A safety system is disclosed for universal attachment to existing garage door openers. A transmitter of infrared energy transmits a beam laterally of the door opening to detect any obstruction to door closing movement. A safety control circuit is adapted for connection to the main control circuit of the existing garage door opener, the existing push button switch is disconnected from the main control circuit and connected to the new safety control circuit, a flexible cable or cord is connected for actual movement in accordance with movement of the door and is connected to the safety control circuit at a reel on which the cord is wound, and the safety control circuit determines if there is actual door movement and actual door closing movement, as well as being responsive to an obstruction to door closing movement to apply a signal to stop the door and then apply another signal to start the door in its opening movement.

Abstract: Actuating device for movable parts, such for closure parts for apertures in vehicles, having a reversible direct current drive motor, a polarity reversing actuating switch in the motor circuit for applying direct current to the motor circuit with a polarization corresponding to the desired motor rotational direction; a relay with a switch contact in the motor circuit which is in series with the polarity reversing switch; and further, having a position responsive switch connected with the relay control circuit for actuating the relay in a reference position of the movable parts, for the purpose of deactivating the drive motor by opening the switch contact. The relay is a direct current relay, which, upon application of a first or second voltage level at its control circuit, closes or, respectively, opens the switch contact.

Abstract: There is provided a moisture-responsive system for protecting the interior of an enclosure such as a motor vehicle which includes an opening; a closure for the opening; a moisture sensor for providing a moisture signal in response to sensing of moisture in excess of a predetermined threshold; a circuit coupled to the closure and the moisture sensor for providing a signal to actuate the closure in response to receipt of a moisture signal and for sensing obstructions of the closure and temporarily terminating the actuation of the closure in response thereto.There is also provided an improved moisture sensor comprising conductive plates separated by and supported on an insulating layer with a raised bulbous portion which extends above the plates to predetermine the amount of moisture necessary to electronically bridge the gap between the conductive plates and therefore the level at which the sensor commences to sense moisture.

Abstract: Variable electrically motorized drive mechanism for gates or similar structure close-off devices that can be installed for the purpose of an assembly operation that is as heavy-duty as possible and without fine adjustments, for which purpose the gate is provided with controls that essentially comprise a position detector, a memory, and a reference-point indicator, the last of which is positioned between the gate-panel limiting positions and outside of any stop positions or defines a corresponding gate-panel reference-point position and synchronizes the position detector at each stroke such that the path that the panel is to travel along from the reference-point position into a particular desired position is dicated or monitored in accordance with a memory output that corresponds to the adjusted position. The system is accordingly continuously self-monitoring and can synchronize itself when the motor is started up again after a power outage and possibly manual operation of the gate.

Abstract: A side support device for use with a seat in a vehicle is disclosed. In the device, an inclination sensing switch for detecting the inclination of the seat is arranged in the seat and is also connected through a relay to a motor which is used to open or close a side support provided in the seat. The side support can be moved to its open or closed position according to the inclination of the seat.

Abstract: An imaginary limit position is determined on the basis of a position where an overload condition is detected, and such imaginary limit position is stored. Subsequent to the storage, an extent of movement is limited to that defined by the limit position. An operational mode which re-establishes a stored position is provided. In response to the detection of an overload condition, a motor is reversed to move the attitude back through a small stroke, whereupon the motor is deenergized. When a manual switch is turned on, the motor is driven over an incremental time interval and is then deenergized temporarily. After a given time interval, the motor is again driven. Where a pluarlity of motors are driven simultaneously, the timing of initiating to drive each motor is displaced relative to each other by a small time increment during which a transient current occurs upon initiating the drive.

Abstract: The present invention relates to a drive control device for a motor actuator for use with an automobile air conditioner.The drive control device for a motor actuator is formed by using a transistor, and the supply of current from a power source to a motor constituting the drive unit of the motor actuator is carried out by the switching operation of a single transistor.A safety circuit is added to the control switches for applying a signal to the control device for the motor actuator, the safety circuit operates to always make the air condition in the compartment to be set required air conditioning mode.

Abstract: An automatic build-up welding machine for repair of workpieces such as track rollers. The machine requires no operator in charge during the welding operation. The apparatus comprises a device including a pair of guides, and a switch box connected adjustably in position to a welding torch, the switch box housing therein a pair of limit switches for reversing motion of the torch and a swing lever positioned between the limit switches. The apparatus controls the travel of the torch by varying half-cycles of the reciprocable travel thereof.

Abstract: The present invention is a zoom motor control for controlling an electric motor for use in combination with an auto zoom device for a movie camera. The auto zoom device includes a rotating member driven by the electric motor and a zoom-lens tube rotating member. The zoom motor control includes a rectangular housing which an operator of the movie camera may comfortably hold in his hand and a strain gauge sensor which is mechanically coupled to the rectangular housing. The strain gauge sensor is disposed so that the operator may apply with his thumb a varying amount of pressure in either direction. The strain gauge sensor has an output signal which is proportional to the varying amount of pressure. The zoom motor control includes a control circuit for converting the output signal of the strain gauge sensor to a control signal for controlling the electric motor of the auto zoom device.

Abstract: A door actuating system has an electric drive motor and a chain drive connected to the door. An electromagnetic clutch connects the motor drive to the chain drive when the clutch is activated. The system includes a controller for controlling the magnitude of the voltage applied to the clutch to allow the movement of the door to build up over a finite time to a steady-state speed.

Abstract: The present invention is an automatic garage door operator with a two button portable controller enabling a secure mode and control of a load remote from the door operator. In accordance with the normal operation of the secure button, actuation when the garage door is closed toggles a secure mode between secure and non-secure states. In the secure state the automatic gargage door operator does not move the door upon receipt of a door signal. To open the door when in the secure state the operator must first press the secure button to enter the non-secure state and then press the door button to open the door. The secure button has a secondary function when the garage door is open and the secure state is prohibited. Actuation of the secure botton when the door is open toggles the state of a load remote from the automatic garage door operator between an on state and an off state. This control is achieved via a signal modulated on the electric power main.

Abstract: A control device for a movable part, especially a sliding/tilting roof of a vehicle, comprises a motor for driving the movable part, wherein the terminals of the motor can be selectively connected to different poles of a power source by means of make-and-break contacts of corresponding relays, which make-and-break contacts each connect the corresponding terminal of the motor with the negative pole of the power source when the corresponding relay is not excited, and with the positive pole of the power source when the corresponding relay is excited. A first switch is provided, which is actuated through a control member driven by the motor and which interrupts the connection of the motor with the poles of the power source when the movable part reaches its closed position.

Abstract: A damper position control device for an automotive air conditioning system having a lock release mechanism for the drive shaft of a motor which controls the angular position of an air mix damper. A damper position control device is disclosed which controls the angular position of an air mix damper. The damper position control device includes a motor actuator which drives the air mix damper and a control circuit. The motor actuator includes a drive motor for the air mix damper and a rotation control device including a regulator which regulates the upper and lower rotational limits of the shaft of the drive motor and a position detector which detects the rotational angle of the shaft. The control circuit controls the motor actuator in accordance with a plurality of detected signals. The control circuit generates a drive signal which drives the motor actuator and further includes a lock detector which detects if the shaft of the motor is locked against rotational motion in a first rotational direction.

Abstract: A control system for an angiographic injector which precisely regulates the speed of a motor used to expel contrast media from a syringe. The control system is centered around a microprocessor which receives commands from the operator via a keyboard, and then regulates the speed of the motor by supplying drive command pulses to a circuit which integrates the difference in frequency between the command pulses and another pulse train whose frequency is proportional to actual motor speed. The control system also includes a velocity loop which uses the motor back EMF to supply an analog voltage also proportional to motor speed to a difference amplifier in a conventional velocity loop. The system is a dual loop controller where the second loop provides approximate speed control, while the first loop provides a "velocity correction" voltage required to bring the system to zero steady state speed error.

Abstract: An improved shift motor assembly for selectively moving a shift rod or similar member between two gear-engaging positions for use, for example, in a two-speed axle assembly is disclosed. The assembly includes a mechanism for limiting the amount of linear movement of a drive nut of a gear changing apparatus. The movement limiting mechanism interrupts an electrical circuit between a source of electrical energy and a bi-directional motor utilized to move the drive nut, thereby preventing linear movement of the drive nut beyond predetermined limit positions in either directions. The movement limiting mechanism includes a movable electrical contact which normally engages a stationary electrical contact. The movable and stationary electrical contacts form a single pole, single throw electrical switch which is connected in series between the source of electrical energy and the motor.

Abstract: A drive and position sensor having a drive shaft for positioning a driven part and connected to a magnetic core by a reduction gear to position the core axially relative to a primary and secondary coil so that the voltage in the secondary coil is a measure of the position of the driven part.

Abstract: A vehicle windshield wiper, whereby a blade is supported on a lever member hinged to a fixed support and designed to swing about a pin by virtue of a linear actuator, an output member of which consists at least partially of a screw connected to an electric motor having a hollow shaft, by means of a circirculating-ball screw-nut screw coupling, and extending through the motor itself.

Abstract: A power antenna control for a motor vehicle comprises a Hall effect device responsive to motor armature rotation to generate pulses for equal predetermined increments of antenna travel. These pulses are applied to both position and stall counters. In extension, the antenna drive is stopped when the position counter reaches a number corresponding to a predetermined extended position, which may be full extension or some lesser extension. In retraction, the stall counter is used with a clock to indicate stall which, when detected, causes the antenna drive to be stopped. Automatic current limiting for drive torque limitation during stall is activated only when the position counter indicates a limited position range near full retraction. Further during retraction, if the antenna is stopped within a small position range of full rectraction, it is reset to a count indicating full retraction. The system eliminates the need for hard stall sensing reaction switches and thus reduces antenna drive cable fatigue.

Abstract: An electrically-operable actuator 10, for use in locking and unlocking a latch mechanism in a motor vehicle by the selective operation of a switchable direct current electrical supply to said actuator, comprises a housing 12, 14 enclosing a reversible direct current electric motor 16 adapted to be coupled to said electrical supply, a reduction gear train, a reciprocable member 96 movable between two predefined limits and adapted at one end to be coupled with a locking lever of said latch mechanism, and a rotary, load-sensitive releasable coupling 64 provided between said reversible electric motor 16 and said reciprocable member 96, the actuator including a releasably-engagable locking lever 132 which is operable to lock said reciprocable member 96 against any movement relative to said housing 12, 14, said locking lever 132 being applied, when the actuator 10 is coupled to said switchable electrical supply and after one of said predetermined limits has been reached, by the operation of a switch means in said s

Abstract: An electric setting drive for an automotive vehicle speed control or regulating system has an electric motor (1), a gearing (2) which is connected to said motor, and has an electromagnetic rapid-disconnect coupling as well as elements for converting a rotation of the gearing into a linear motion. The linear motion can be transmitted via a pull cable to a spring-loaded throttle valve. For the conversion of the rotary movement into linear movement there is provided a threaded spindle (3) which is turnably connected with the gearing (2) and engages into a thread of a displaceably mounted electrically energizable pot magnet (4). Facing the pot magnet (4) there is a linearly movable armature plate (6) to which the pull cable (7) is attached.

Abstract: A controller for controlling the movement of a member such as a sliding door driven by a motor. The door is controlled by the use of a motion detector coupled with the door. Pulses from the motion detector are counted by control circuitry, and the door is moved at a reduced speed in the region of its limits of travel. The limits are defined by the number of pulses from the motion detector equalling a predetermined value. The motor is de-energized if a stationary state of the door is detected in the low speed region, and reversed if a stationary condition is detected in the remainder of its movement.