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:
Jan. 11, 1983
Filed:
Dec. 29, 1980
Applicant:
Inventors:
Joseph K Kruzich, Ann Arbor, MI (US);
Sidney R Fletcher, Franklin, MI (US);
Assignee:
Ford Motor Company, Dearborn, MI (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H05B / ;
U.S. Cl.
CPC ...
315158 ; 2502 / ; 250239 ; 315 77 ; 315156 ; 315291 ;
Abstract
A lamp dimmer control utilizing a variable resistor and an associated adjustment mechanism having an ambient light sensor mounted integral to the control so as to receive ambient light external to the control housing via a translucent adjustment mechanism. Constant contrast illumination control is achieved by pulse width modulation techniques in accordance with the output of the variable resistance setting and the output of the ambient light sensor.