Coordinated windshield washer and wiper

Claim 2

A control system for a coordinated windshield washer and wiper including an electrically energized washer pump and wiper motor; the combination comprising semiconductor switch means for energizing said wiper motor and washer pump concurrently for conjoint operation, first and second extinguishing means for effecting deenergization of said washer pump and wiper motor, respectively, first timing means responsive to said switch means for effecting energization of said first extinguishing means upon expiration of a timed interval following starting of the motor and pump, and second timing means responsive to said first extinguishing means for effecting energization of said second extinguishing means upon expiration of a timed interval following deenergization of said washer pump.

Claim 3

A control system according to claim 1 wherein said first timing means is adjustable.

Claim 4

A control system according to claim 1 wherein said second timing means is adjustable.

Claim 5

A control system according to claim 1 wherein said first and second timing means are independently adjustable.

Claim 6

A control system according to claim 1 including a manual control for controlling energization of said motor independently of said washer pump.

Claim 7

A control system according to claim 5 including means for bypassing said second timing means when said motor is energized independently of said washer pump whereby a timed washing cycle can be provided while maintaining continuous operation of said wiper motor.

Claim 8

A control system according to claim 1 wherein said first and second cutoff means comprise semiconductor switching devices and wherein said second cutoff means is self-extinguishing.

Claim 9

A control system according to claim 1 including manual controller means for sustaining operation of said washer motor beyond the timing period of said first timing means.

Claim 10

An electrical control system for energizing first and second loads concurrently and for deenergizing said first and second loads sequentially comprising first and second gate controlled semiconductor load switches triggered by an input pulse to produce a continuous current flow until interrupted, first and second extinguishing networks, each comprising a gate controlled semiconductor switch in circuit with said first and second load switches for interrupting current flow through said first and second load switches, respectively, first and second timing networks being activated in sequence by said first load switch and said first extinguishing network switch, respectively, to produce a delayed output, the output of said first and second timing networks being in circuit with said first and second extinguishing networks, respectively, to thereby trigger said first and second extinguishing networks in sequence.

Claim 11

An electrical control system for energizing first and second loads concurrently and for deenergizing said first and second loads sequentially comprising first and second gate controlled semiconductor load switches triggered by an input pulse to produce a continuous current flow until interrupted, first and second extinguishing networks, each comprising a gate controlled semiconductor switch in circuit with said first and second load switches for interrupting current flow through said first and second load switches, respectively, first and second timing networks being activated in sequence by said first load switch and said first extinguishing network switch, respectively, to produce a delayed output, the output of said first and second timing networks being in circuit with said first and second extinguishing networks, respectively, to thereby trigger said first and second extinguishing networks in sequence.

Claim 12

A control system according to claim 9 wherein the timing periods of said first and second timing networks are each independently adjustable.

Claim 13

In a system for automatically energizing first and second motors concurrently for an interval followed by sequential deenergization of said motors; a control system comprising first and second timing networks, each network being responsive to an input signal for producing an output signal in an interval of time following reception of the input signal, a gate-controlled, semiconductor starting switch in circuit with said second motor starting circuit for controlling energization thereof, a gate-controlled semiconductor master switch in circuit with said first motor, the gate of said starting switch and said first timing network for controlling energization of said second motor, for triggering said starting motor switch and for supplying an input pulse to said first timing network, first extinguishing means in circuit with said master switch comprising a gate-controlled semiconductor switch for deactivating said master switch, to thereby deenergize said first motor when triggered, said switch of said first extinguishing means having its gate in circuit with and being triggered by the output of said first timing network and being in circuit with the input of said second timing means to thereby apply an input pulse thereto when triggered, second extinguishing means in circuit with said first starting switch comprising a gate-controlled semiconductor swiTch for extinguishing said first starting switch to thereby deenergize said first motor when said gate-controlled semiconductor extinguishing switch is triggered, said switch of said second extinguishing means having its gate in circuit with and triggered by the output of said second timing network and manually actuated controller means for triggering said master switch.

Claim 14

In a system for automatically energizing first and second motors concurrently for an interval followed by sequential deenergization of said motors; a control system comprising first and second timing networks, each network being responsive to an input signal for producing an output signal in an interval of time following reception of the input signal, a gate-controlled, semiconductor starting switch in circuit with said second motor starting circuit for controlling energization thereof, a gate-controlled semiconductor master switch in circuit with said first motor, the gate of said starting switch and said first timing network for controlling energization of said second motor, for triggering said starting motor switch and for supplying an input pulse to said first timing network, first extinguishing means in circuit with said master switch comprising a gate-controlled semiconductor switch for deactivating said master switch, to thereby deenergize said first motor when triggered, said switch of said first extinguishing means having its gate in circuit with and being triggered by the output of said first timing network and being in circuit with the input of said second timing means to thereby apply an input pulse thereto when triggered, second extinguishing means in circuit with said first starting switch comprising a gate-controlled semiconductor swiTch for extinguishing said first starting switch to thereby deenergize said first motor when said gate-controlled semiconductor extinguishing switch is triggered, said switch of said second extinguishing means having its gate in circuit with and triggered by the output of said second timing network and manually actuated controller means for triggering said master switch.

Claim 15

A control system according to claim 1 wherein the timing periods of said first and second timing networks are each independently adjustable.

Claim 16

A control system according to claim 11 wherein said manually actuated controller means includes means for sustaining operation of said first motor beyond the timing period of said first timing network by operator actuation.