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:
Aug. 04, 1987
Filed:
Oct. 14, 1986
Applicant:
Inventors:
Ronald H Haag, East Detroit, MI (US);
Edgar H Schlaps, Washington, MI (US);
Assignee:
General Motors Corporation, Detroit, MI (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B60Q / ;
U.S. Cl.
CPC ...
307 / ; 307 / ; 315 82 ; 315 83 ; 340 92 ;
Abstract
A motor vehicle daytime running light circuit is disclosed in which the high beam headlights are energized at a reduced intensity in response to a predetermined vehicle operating condition including, for example, the headlight switch being in the off position. Power to the high beam headlights is supplied through a field-effect transistor that is modulated by an oscillator operating at a frequency sufficient to maintain the headlights at a constant intensity. Circuitry that senses the predetermined vehicle operating condition enables the oscillator and disables a high beam indicator.