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. 17, 1998
Filed:
Aug. 14, 1996
Jerome D Frank, Silver Spring, MD (US);
Charles H Wood, Rockville, MD (US);
Miodrag Cekic, Silver Spring, MD (US);
Fusion UV Systems, Inc., Gaithersburg, MD (US);
Abstract
An electrodeless lamp comprises an envelope containing a fill; a starting electrode in proximity to a given region of the envelope when lamp is started; a field emission source disposed inside the envelope at the given region; starting power source coupled to the electrode for applying an electric field to the field emission source to cause a discharge; and excitation power source coupled to the fill to sustain the discharge. A method for starting an electrodeless lamp is also disclosed, comprising the steps of providing bulb comprised of an envelope and a discharge forming fill in the envelope; providing a field emission source on an interior surface of the envelope at a given region; applying an electric field at the given region to cause field emission from the field emission source to cause a discharge; and coupling a power source to the fill to sustain the discharge.