Universal intermittent windshield wiper circuit
AssigneeFacet Enterprises, Inc.
InventorRalph V. Brown
Life of this patent
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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.
Claims12
An intermittent windshield wiper circuit connectable to the windshield wiper mechanism of a vehicle to provide an intermittent mode of operation comprising:
- timer means, operative to be energized by the vehicles' source of electrical power for generating pulse signals at predetermined intervals;
- and
- switch means actuated by said pulse signal for switching signals between at least a first, a second, a third, a fourth, and a fifth lead, said switch means having a first state in the absence of said pulse signals and switchable to a second state in response to said pulse signals, said switch means in said first state operative to connect the vehicle's source of electrical power to said first lead, to connect said second lead to said third lead, and to connect said fourth lead to said fifth lead, and in said second state operative to connect the vehicle's source of electrical power to said second lead, connect said fourth lead to a common ground potential and wherein said first, third and fifth leads are disconnected from all other leads in said second state.
Dependencies are inferred from the claim text.