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:
Nov. 24, 2009
Filed:
Aug. 01, 2006
David W. Baarman, Fennville, MI (US);
John James Lord, Springfield, IL (US);
Nathan P. Stien, West Des Moines, IA (US);
Wesley J. Bachman, Auburn, IL (US);
David W. Baarman, Fennville, MI (US);
John James Lord, Springfield, IL (US);
Nathan P. Stien, West Des Moines, IA (US);
Wesley J. Bachman, Auburn, IL (US);
Access Business Group International LLC, Ada, MI (US);
Abstract
An inductively powered gas discharge lamp including both a power coil and a heating coils associated with each filament. The heating coils enable the filaments to be preheated before the starting voltage is applied through the power coils. The inductive power coils and the inductive heater coils are contained within the lamp envelope, allowing the lamp to be entirely sealed. A method of dimming the lamp also is disclosed. The lamp is dimmed by both decreasing the power applied to the power coils and increasing the power applied to the heating coils so as to prevent the arc from extinguishing under lower voltage conditions.