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, 2012
Filed:
Feb. 05, 2007
Bernard Patrick Bewlay, Schenectady, NY (US);
Dennis Joseph Dalpe, Schenectady, NY (US);
Bruce Alan Knudsen, Amsterdam, NY (US);
Mohamed Rahmane, Clifton Park, NY (US);
Svetlana Selezneva, Niskayuna, NY (US);
James Scott Vartuli, Rexford, NY (US);
James Anthony Brewer, Scotia, NY (US);
Bernard Patrick Bewlay, Schenectady, NY (US);
Dennis Joseph Dalpe, Schenectady, NY (US);
Bruce Alan Knudsen, Amsterdam, NY (US);
Mohamed Rahmane, Clifton Park, NY (US);
Svetlana Selezneva, Niskayuna, NY (US);
James Scott Vartuli, Rexford, NY (US);
James Anthony Brewer, Scotia, NY (US);
General Electric Company, Niskayuna, NY (US);
Abstract
A lamp is provided with an axially and radially graded structure to reduce the possibility of thermal stresses, cracks, and other defects in the lamp. In one embodiment, a system includes a ceramic lamp having a ceramic arc envelope and an end structure coupled to the ceramic arc envelope, wherein the end structure is graded both axially and radially into a plurality of regions. In another embodiment, a system includes a lamp having a layered end structure with a plurality of layers disposed one over another and that extend in both axial and radial directions relative to an axis of the lamp, wherein the plurality of layers include different materials having different coefficients of thermal expansion, Poisson's ratios, or elastic moduli, or a combination thereof.