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. 30, 1990
Filed:
Feb. 22, 1989
Yoshio Iwasa, Nagareyama, JP;
Nissan Motor Co., Ltd., Yokohama, JP;
Abstract
A vehicle window heating apparatus includes a heating element provided for heating a vehicle window when connected to a generator. The generator has a field winding fed from a voltage regulator connected to a vehicle battery. The apparatus also includes a circuit for connecting the generator selectively to one of the voltage regulator and the heating element. The circuit is responsive to a signal indicative of a demand for a window de-icing operation for connecting the generator to the heating element while disconnecting it from the voltage regulator and the vehicle battery upon the occurrence of three conditions of (a) the vehicle transmission being in neutral or park, (b) the engine being idling, and (c) the vehicle being at rest.