The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 15, 1985
Filed:
Sep. 14, 1984
Lynville G Johnson, Kettering, OH (US);
James O Elliott, Beavercreek, OH (US);
General Motors Corporation, Detroit, MI (US);
Abstract
A windshield cleaner control for a vehicle in which signals from separate washer and wiper actuating switches in the vehicle passenger compartment are voltage multiplexed on a single electric conductor through the firewall to washer and wiper actuating circuitry in the vehicle passenger compartment. A wiper actuating path is established including, in series, a source of electric power, a wiper motor actuating coil relay, the park switch and the washer motor, the internal impedance of the actuating coil being sufficiently greater than that of the washer motor that the latter is not activated by current flow through the former. The parallel wiper and washer switches are connected in series between the source of electric power and the electric conductor, park switch and washer motor, but a resistor in series with the wiper switch similarly prevents activation of the washer motor by the wiper switch. Circuit apparatus is responsive to either switch to establish an initial current through the actuating coil, with the park switch closing to complete the wipe cycle. A timer may be actuated along with the washer motor to activate the wiper motor for extra cycles of extra cleaning after deactivation of the washer motor.