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:
Jun. 24, 2003
Filed:
May. 29, 2001
Robert Alexander Erhardt, Schaumburg, IL (US);
Koninklijke Philips Electronics N.V., Eindhoven, NL;
Abstract
A system and method of automatic cycling control for HID lamps, comprising a switching device for switching power to the HID lamp, a first timer operatively connected to the power switching device, and a second timer operatively connected to the power switching device, wherein the first timer starts timing when the power switching device powers the HID lamp and signals the power switching device to extinguish the HID lamp when the first timer counts to an operating time setpoint, and the second timer starts timing when the power switching device extinguishes the HID lamp and signals the power switching device to power the HID lamp when the second timer counts to a cooling time setpoint. If the lamp is turned off and on before the operating time setpoint is met, the system will reset and begin a new operating timing period.