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. 10, 2014
Filed:
Mar. 30, 2010
Richard Herring, Longmont, CO (US);
Charles E. Hunt, Davis, CA (US);
Bernard K. Vanch, Beaverton, OR (US);
Tomas Hasilik, Olomouc, CZ;
Viktor Jelinek, Olomouc, CZ;
Richard Herring, Longmont, CO (US);
Charles E. Hunt, Davis, CA (US);
Bernard K. Vanch, Beaverton, OR (US);
Tomas Hasilik, Olomouc, CZ;
Viktor Jelinek, Olomouc, CZ;
Vu1 Corporation, New York, NY (US);
Abstract
A device for lighting a room is described. The device has an envelope with a transparent face, the face having an interior surface coated with a cathodoluminescent screen and a thin, reflective, conductive, anode layer. There is a broad-beam electron gun mounted directly to feedthroughs in a base of the envelope with a heated, button-on-hairpin, cathode for emitting electrons in a broad beam towards the anode, and a power supply mounted on the feedthroughs at the base of the envelope that drives the cathode to a multi-kilovolt negative voltage. A two-prong snubber serves as an anode contact to permit the power supply to drive the anode to a voltage near ground. A method of manufacture of the anode uses a single step deposition and lacquering process followed by a metallization using a conical-spiral tungsten filament coated with aluminum by a thermal spray coating process.