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:
Jan. 04, 2000
Filed:
Jun. 28, 1996
Bernard W Rachel, Highland Heights, OH (US);
Donald E Hatfield, Mattoon, IL (US);
General Electric Company, Schenectady, NY (US);
Abstract
This invention consists of an improved design and assembly process the for manufacture of a single ended quartz (SEQ) lamp for projection applications. The lamp (A) includes a hermetically sealed envelope (10) which houses a filament (15). A ceramic base (12) receives the envelope in a receiving slot (26). Cement fill in the slot, around the hermetic seal, bonds the envelope to the base. Ends (18,20) of the filament extend into the seal region (22) and are electrically connected to a power source by three-part leads (14,16). This invention consists of a much simpler two-pin prefocus ceramic base SEQ lamp design that is made with fewer parts and is much easier and faster to assemble to enable much reduced labor and cost. Also, the ceramic base is smaller and exposes more of the quartz lamp seal to the surroundings to enable more effective cooling during lamp operation to prevent lamp failures from overheated seals. Also, the ceramic base is designed for quick assembly with the coil correctly focused to the base.