Abstract: Disclosed is a rotation control circuit for positioning a rotating member driven by a motor comprising a power supply and a motor relay which is energized by the power supply. A circuit is provided for intermittently energizing the relay. The circuit may comprise a first switch means connected to the power supply and a second switch means connecting the first switch means to the motor relay. The second switch means is normally closed and a timer is connected to the first switch means which is operable in response to a closing of the first switch means to generate a relay energizing signal after a predetermined time delay. This signal is operable, through an associated relay, to open the second switch means and thereby deenergize the motor relay after the predetermined time delay. The control circuit is also operable to energize the motor relay in the continuous mode. Finally, safety interlocks are provided in the control circuit to minimize any hazards to operating personnel.

Abstract: A control circuit for a windshield wiper motor which utilizes a plurality of infrared emitters that emit a chain of infrared pulses towards a plurality of infrared sensors. When rain passes between the infrared emitters and the infrared sensors, it will interrupt the flow of pulses therebetween. A control circuit senses the missed pulses and selectively energizes a low-speed, mid-speed and high-speed winding associated with the wiper motor for varying the speed of the windshield wipers. The device automatically controls the operation of the windshield wipers of a vehicle.

Abstract: A windshield wiper mechanism includes a motor driven gear and a drive plate positioned relative thereto but selectively rotatable to enable easy change of the effective wiper parts position. A park switch to automatically stops the arm and blade at a selected position on the windshield is located on the drive gear (driving rotatable member). Removal, rotation and reengagement of the drive plate relative to the motor driven gear then easily changes the wiper park position. The drive plate is provided with at least one opening located at a radial distance from the center rotating axis of the drive plate for receiving a pin of a connecting link that will provide oscillating motion to a shaft upon which a windshield wiper arm and blade is secured.

Abstract: A control circuit for a windshield wiper circuit provides for a depressed parking position by including a timing element which delays turn off of the motor for a time interval after the wiper reaches a position adjacent the parking position area.

Abstract: Windshield wiper apparatus for a motor vehicle includes a first wiper pivoted below the driver side of the windshield and capable of wiping an arc between the bottom center and the driver side end thereof, a second wiper pivoted to the passenger side of the pivot of the first and capable of wiping an arc between the bottoms of the driver and passenger sides thereof, said arcs having a substantial portion of overlap on the driver side, first and second motors effective to drive the first and second wipers at substantially similar speeds and control apparatus having a mode of operation in which it is effective to drive the wipers in tandem from the bottom of the windshield to the end of the arc of the first wiper at the driver end of the windshield, hold the first wiper in that position while driving the second wiper to the bottom of the driver side and back and then drive both wipers in tandem back to the starting point.

Abstract: A wiper control device for a vehicle capable of accurately stopping wiper blades always at the lowermost position of a wiping range regardless of the rotating speed of a wiper motor. The wiper control device automatically stops the wiper motor at the lowermost position of the wiper blades with a control circuit which obtains a sliding angle corresponding to the rotating speed of the wiper motor from the rotating speed of the motor and controls to flow an electric current continuously in the motor during the time while the motor reaches a rotating position even after the motor is interrupted by selecting the cam contact position with respect to the annular electrode. Thus, this wiper control device can eliminate to disturb the visual field of a driver with the wiper blades.

Abstract: A device is disclosed for intermittent connection of a wiper drive motor to a power source. The device comprises first means for providing a control signal with its magnitude increased with increasing vehicle running speed, and second means for providing a first signal for a predetermined period of time and a second signal for a period of time variable according to the magnitude of the control signal. Means is provided for connecting the wiper drive motor to the power source in response to the first signal and for disconnecting the wiper drive motor from the power source in response to the second signal.

Abstract: A drive circuit for a wiper device includes reversible driving motors for alternately driving a pair of wiper assemblies in first and second directions. Each driving circuit includes a switching means and a means for detecting both ends of the wiper blade motions in the first and second directions. The switching means is operative to switch the direction of electric current supplied to an electric motor when the detecting means detects the end of wiper blade motion. Each driving circuit is connected to both of switching means so that it can reverse the current supplied to the driving motor when both of switching means detect the ends of the wiper assembly motion.

Abstract: An electric motor drive unit for windshield wipers includes an electric motor having an electrical connection plug housing and a brush holder plate. The plug housing and brush holder plate are provided as an integral unit. The unit is secured between the motor housing and the gear housing. This arrangement and assembly of the drive unit is simplified and less expensive to manufacture.

Abstract: A vehicle windshield cleaning system is disclosed which includes windshield wiper blades reciprocally driven by an electric motor, and an associated pump driven by an electric motor for dispensing windshield washing liquid onto a windshield to be cleaned. A manually positionable mode selector component in the electric control circuit for the blade and pump motors provides for selectively actuating the wiper blades in mist, pulse, low speed, high speed and wash modes. In the pulse mode, the blade drive motor is energized to intermittently oscillate the wiper blades through succeeding cycles with a time delay therebetween, and in the wash mode the pump motor is energized for a period of time which determines the amount of washer fluid dispensed onto a windshield.

Abstract: A windshield wiper system for an automotive vehicle such that intermittent wiper operation is controllable according to the distance travelled and the time elapsed, and is not merely dependent upon the speed of the vehicle. The windshield wiper system of the present invention thus improved comprises a distance signal generator, a time signal generator, a counter, and a wiper driving means, so that a more adequate intermittent wiper operation can be obtained in such a bad weather as drizzle or light rain, especially when the vehicle is travelling at a low speed or has stopped.

Abstract: A windshield wiper is operated by a wiper motor from an electric source, with a control circuit operating the motor. This control circuit has a continuous-wipe switch which when closed operates the wiper continuously. A discontinuous-wipe switch can be closed to start an oscillator, with this oscillator connected to a backward counter which counts backwardly synchronously with the oscillator. A comparator compares the instantaneous numerical output of the counter with a fixed numerical output generated by a settable memory, and operates the wiper briefly when the two outputs agree. A set switch is connected to the memory and can reset it so that when this set switch is operated the fixed numerical output of the memory is fixed at the instantaneous numerical output of the counter, thereby setting the interval between successive wipes of the wiper.

Abstract: A wiper device for wiping rain on a mirror surface of a rear-view mirror provided on the exterior of an automotive vehicle, includes a driving means of the wiper blade for driving the latter in first and second directions alternatively. The driving device comprises an electric circuit which includes a switching means and a means for detecting both ends of the wiper blade motions in the first and second directions. The switching means is operative to switch direction of an electric power supply to an electric motor when the detecting means detects the end of wiper blade motion.

Abstract: A motor reversing control circuit for a motor vehicle windshield wiper has a motor driven cam with a first lobe defining a park position for the wiper and a second lobe defining, in relation to the first, a wipe angle. A park switch is actuated by either lobe to reverse the output of a flip-flop which controls motor direction. The motor is activated in response to one or more of (a) a main switch, (b) the unactuated park switch and (c) the flip-flop output signalling wiper movement toward the park position. An optional timer effective to delay the motor activation in response to the main switch provides a pause in the park position.

Abstract: A travel limit stop device which can be used in particular for controlling a motor vehicle window wiper motor. This device comprises sliding contacts (20, 21) capable of displacement on concentric circular tracks of a connector (40), the co-operation of the sliding contacts (20, 21) and a connector (40) providing either for the supply to the associated electric motor or short-circuiting thereof; such a device is characterized in that the sliding contacts (20, 21) are carried by the output wheel (1) of the electric motor and the connector (40) which is fixed on the cover of the casing of said wheel comprises three electrically insulated conductor sectors (37, 38, 39) while the sliding contacts (20, 21) are electrically connected together.

Abstract: A windshield wiper system having an electric motor for driving windshield wipers through repeating wiper cycles by reversing the direction of rotation of the motor through a reversing switch comprising a pair of relays which control the polarity of current applied to the motor. A limit switch is mechanically coupled to the motor for detecting the end positions of the motor and for providing signals indicative thereof. First and second time delay circuits each have an output respectively coupled to one of the relays, and each delay circuit has a pair of inputs coupled to the limit switch. Each delay circuit is activated to provide a delayed output to its relay by a respective end position signal which immediately deactivates the other delay circuit.

Abstract: A windshield wiper motor control circuit for controlling a motor which is normally operated in either continuous or intermittent modes and wherein during the intermittent mode the motor is responsive to a voltage source controlled by a pulse generator. In response to low motor speed and voltage conditions and during overload conditions, the control circuit reverts to intermittent operation and the duration between pulses is adjusted to prevent overheating or destruction of the motor.

Abstract: In a windshield wiper system of the type using a reversible electric motor, and controlled by a reversing switch, at least one of the reversing points is variable in dependence on the switching position of an operating switch. The range of angular rotation of the motor armature is thereby increased when the operating switch is moved to the "off" position to in turn assure that the wiper blades will be moved to a concealed parking position.

Abstract: A universal intermittent windshield wiper circuit adaptable to the windshield wiper mechanism of automotive vehicles is disclosed herein. The intermittent wiper circuit comprises an R-C timer circuit periodically energizing a three pole double throw relay. The internal interconnections of the relay switch contacts permit the intermittent windshield wiper circuit to be connected to the wiper mechanism of almost all domestically manufactured automotive vehicle as well as many vehicles manufactured overseas using only external connections. The circuit is equally adaptable to external and concealed wiper mechanism.

Abstract: A circuit arrangement for a windshield cleaning installation of motor vehicles with a switch which, in one engaging position, connects a program transmitter for one function by way of a control line with one terminal of the power supply and which, in a second engaging position, connects the program transmitter for another function by way of the same control line with the other power supply terminal; the program transmitter is equipped with switching devices for realizing the various functions corresponding to the potential applied to the control line.

Abstract: A motor is energized by a source through first and second transfer switches. Each transfer switch is operated by a switching transistor. The switching transistor for the first transfer switch is driven by a drive signal while the switching transistor for the second transfer switch is driven by the output of a delay circuit responsive to an excessively large current flowing through the motor. A self-holding switch is provided to connect the motor to the source through the second transfer switch.

Abstract: A vehicle window glass washing system is disclosed which comprises swingable wiper means provided in sliding contact with the window glass of a vehicle and injector means for injecting liquid detergent onto a position of the window glass when actuated. The system also comprises a rotary disc rotatable in synchronism with swinging movement of the wiper means. A pair of contact plates are disposed on the rotary disc symmetrically with respect to the center of the rotary disc and electrically connected to each other. A pair of contacts are fixed to the rotary disc symmetrically with respect to the center of the rotary disc so that the rotary disc can bring one of the contact plates into contact with one of the fixed contacts while at the same time the other contact plate into contact with the other fixed contact to allow actuation of the injector means except when the wiper means is around the position at which the liquid detergent is injected.

Abstract: A window clearing arrangement particularly for the rear window mounted on an automobile liftgate is provided, being characterized by a control circuit comprising a single relay, the single reversing contact of which enables, according to its position, either wiping by powering the motor-reducer or the stopping of the motor by short-circuiting of the armature. The relay is fed by the first wire, while the second wire powers the defogging system. All of the controls, whether momentary or not, involve one or more suitable switches, one position, however, being reserved for the impulse control of the washer by electrically powering a pump, which simultaneously activates the wiper.

Abstract: A pre-step timer circuit for pre-advancing the next timer period (control step) in a DC motor controller, such as in a crane-hoist controller. A sensing resistor module is connected from the line side of a contactor coil of a preceding control step to the input of a timer module in series with the accelerating contactor coil in the next control step. This resistor module sensing the previous coil voltage provides a feed-forward path for the sensed voltage signal to pre-time the next timer module. So, if a master switch is left in the previous control step long enough for the next timer module to time out, then the next control step is actuated immediately when the master switch is advanced thereto.

Abstract: An arrangement for wiping a vehicle window has a wiping element adapted to rotate through a predetermined wiping angle, an electric motor having a rotatable output shaft which is connected with the wiping element so as to rotate the same, and a switching device operative for reversing the direction of rotation of the electric motor when the wiping element reaches the ends of the wiping angle. The wiping element may be mounted on the output shaft of the motor or on an output shaft of a reduction transmission between the electric motor and the wiping element. The switching device may include a direction-reversing switch whose contacts are introduced in the electric circuit of the electric motor, and two switch-actuating pins mounted on an output gear which is fitted on the output shaft. One of the switch-actuating pins may be displaceable relative to the other so that the wiping angle through which the wiping element rotates, can be adjusted.

Abstract: A windshield wiper drive motor and washer pump motor control system providing a selection of intermittent wipe and continuous wiping actions. The intermittent wipe mode of operation features selectable variable delay periods between successive wiping cycles, a first wipe-before-delay mode of operation and a wipe-after-wash mode of operation which affords at least one extra wiping cycle of the motor after release of the wash switch.This application is a continuation of application Ser. No. 792,379, filed Apr. 29, 1977, now abandoned.

Abstract: A circuit arrangement for a wiper motor, of the type comprising a controllable switching element for switching a motor operating circuit, wherein the switching element is controllable by a manually actuable operating switch and by a disconnection signal of a limit switch. The disconnection signal of the limit switch is directly conducted to the switching element through the motor supply lead itself. Thus, an inexpensive single-conductor cabling arrangement is realized.

Abstract: To provide for multiple timing intervals in an entirely integrated circuit structure without replacement of external circuit components, the integrated circuit includes at least two charge resistors and two discharge resistors, each connected to the timing capacitor, and selectively controllable switches connected to the timing capacitor and to the charge and discharge resistors to interconnect the timing capacitor with respective charge and discharge resistors and the input terminals to the timing circuit, as commanded by the respective switch setting. The switches, preferably, are transistor switches which are externally controllable by enabling respective inputs to the integrated circuit structure.

Abstract: A transistor circuit including a capacitor charging circuit and an actuator such as an electric motor provides a two part cyclic timing circuit, one part being one complete revolution of the motor and the other part being the charging time of the capacitor. The entire device is designed to run for an extended period on two dry cells. Practically no current is drawn while the motor is at rest contributing to a long battery life.

Abstract: A wiper switch of a wiper assembly includes a stopping position contact, an intermittent wiping position contact and a low-speed position contact which are respectively connected to a memory circuit, a trigger circuit and a preference circuit, wherein when the wiper switch is transferred from the stopping position to the intermittent wiping position the memory circuit generates a low level signal, whereas the memory circuit generates a high level signal when the wiper switch is transferred from the low-speed wiping position to the intermittent wiping position. A flip-flop connected to the memory circuit and the preference circuit generates a low level signal or a high level signal depending on the closing sequence of the wiper switch.

Abstract: Apparatus for washing and wiping both windscreens and headlamps of automobiles comprises windscreen washer and wiper motors, headlamp washer and wiper motors and control means. The control means includes a transistorized switching circuit whose switched state is governed by the charged state of a capacitor. This switching circuit controls, through a relay, the operation of the headlamp washer and wiper motors such that when the headlamps are switched on they are washed and wiped for a predetermined length of time and so that when the windscreen wiper and washer motors are operated, if the headlamps are on the headlamp washer and wiper motors are automatically operated too.