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:
Sep. 10, 1991
Filed:
Jun. 11, 1990
Ralph W Alten, Arnold, MO (US);
Siegel-Robert, Inc., St. Louis, MO (US);
Abstract
An improved interior lighting system for use in an automobile incorporates a traditional manual switch and door switch for turning the interior light of the automobile on and off, and provides circuitry for causing the interior light to rise transiently to a maximum level when activated to turn on and for causing the interior light to decay transiently to a minimum level when activated to turn off. Circuitry is also provided to automatically turn off the interior light after a predetermined time lapses from the interior light being manually activated by the manual switch, when the ignition to the automobile is turned off. The lighting system also includes circuitry to cause the interior light to remain on for a predetermined time after the door of the automobile is opened, and circuitry to override the predetermined time delay when the ignition of the automobile is turned on.