Sprague Devices, Inc.

Commercial Vehicle Systems, Inc.

Steven J Stronczek

Richard J Frigon

Allan E McIntyre

Dennis L Berndt

A synchronization system according to the present invention includes a signal generator that provides a 'RUN' signal simultaneously to two or more windshield wiper motors in response to simultaneous receipt of position signals generated by the motors. Each motor generates a position signal when the windshield wiper controlled by the motor is at a predetermined position. A gate circuit monitors the output of each motor to determine whether the motor is in the predetermined position. The gate circuit provides a trigger signal to the signal generator of the present invention only when each motor outputs a position signal. The trigger signal causes the signal generator to produce a subsequent 'RUN' signal initiating another wipe cycle. Accordingly, the motors begin each cycle in synchronization.

Synchronization system for motors

A control device for switching control of vehicular accessories between separate vehicle control stations. The device has an output connector connected to the vehicle's accessories, input controls including a control switch located at each control station, and a gating means connected between the input controls and the output connector. When one of the control switches is activated, the gating means connects the control inputs of the corresponding control station to the output connector and disconnects all other control stations. When a control switch is continuously activated for a predetermined duration of time, control is transferred to the corresponding control station and a discrete vehicle accessory driven by the control switch is activated.

Device for switching control of vehicle accessories between vehicle

A windshield washer control system for a vehicle having an air pressure source includes an electrically actuated control valve for controlling communication between the air pressure source and a bladder pump which squirts windshield washer fluid up to the windshield of the vehicle. A fluid restricting orifice is opened and closed by a solenoid actuator such that the pressure communicated to the bladder pump is limited to be below that of the air pressure reservoir. A second orifice controls communication from the pump to ambient atmosphere.

Windshield washer control system

A reciprocating piston fluid powered motor which has a fluid inlet and a fluid outlet. Reciprocation of the piston is controlled by a reciprocable valve spool which communicates with the fluid inlet and fluid outlet. The valve spool cooperates with a valve slide which is shiftable on said valve spool to control spool reciprocation. Fluid flow through the fluid inlet and outlet is controlled by electrically actuated solenoid valves connected in flow communication to the fluid inlet and a park port. An electric pulse width modulating switch is connected to each solenoid valve and has a plurality of positions to enable the piston to reciprocate at continuous low and high speed as well as in an intermittent mode. The switch may also be connected to an air powered washer fluid pump to deliver cleaning fluid on command.

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Michigan City, IN, United States of America

Steven J Stronczek