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:
Oct. 30, 2001
Filed:
Jul. 14, 2000
Donald A. MacLennan, Gaithersburg, MD (US);
Brian P. Turner, Damascus, MD (US);
Aleksandr Gitsevich, Gaithersburg, MD (US);
Gary K. Bass, Mt. Airy, MD (US);
James T. Dolan, Frederick, MD (US);
Kent Kipling, Gaithersburg, MD (US);
Douglas A. Kirkpatrick, Great Falls, VA (US);
Yongzhang Leng, Damascus, MD (US);
Izrail Levin, Silver Spring, MD (US);
Robert J. Roy, Frederick, MD (US);
Bruce Shanks, Gaithersburg, MD (US);
Malcolm Smith, Alexandria, VA (US);
William C. Trimble, Columbia, MD (US);
Peter Tsai, Olney, MD (US);
Fusion Lighting, Inc., Rockville, MD (US);
Abstract
A jacketed lamp bulb envelope includes a ceramic cup having an open end and a partially closed end, the partially closed end defining an aperture, a lamp bulb positioned inside the ceramic cup abutting the aperture, and a reflective ceramic material at least partially covering a portion of the bulb not abutting the aperture. The reflective ceramic material may substantially fill an interior volume of the ceramic cup not occupied by the bulb. The ceramic cup may include a structural feature for aiding in alignment of the jacketed lamp bulb envelope in a lamp. The ceramic cup may include an external flange about a periphery thereof. One example of a jacketed lamp bulb envelope includes a ceramic cup having an open end and a closed end, a ceramic washer covering the open end of the ceramic cup, the washer defining an aperture therethrough, a lamp bulb positioned inside the ceramic cup abutting the aperture, and a reflective ceramic material filling an interior volume of the ceramic cup not occupied by the bulb. A method of packing a jacketed lamp bulb envelope of the type comprising a ceramic cup with a lamp bulb disposed therein includes the steps of filling the ceramic cup with a flowable slurry of reflective material, and applying centrifugal force to the cup to pack the reflective material therein.