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. 24, 2003
Filed:
Feb. 16, 1999
Venkat Subramaniam Venkataramani, Clifton Park, NY (US);
Charles David Greskovich, Schenectady, NY (US);
Curtis Edward Scott, Mentor, OH (US);
James Anthony Brewer, Glenville, NY (US);
Changlong Ning, Leicester, GB;
General Electric Company, Niskayuna, NY (US);
Abstract
A ceramic discharge chamber for a lamp, according to an exemplary embodiment of the invention, comprises a first member which includes a leg portion and a transition portion, wherein the leg portion and the transition portion are integrally formed as one piece from a ceramic material, and a second member which includes a body portion, wherein the body portion is bonded to the transition portion of the first member. The ceramic discharge chamber can be formed by injection molding a ceramic material to form the first member, the first member forming a first portion of the ceramic discharge chamber; and bonding the first member to a second member which forms a second portion of the ceramic discharge chamber. The members which form the ceramic discharge chamber can greatly facilitate assembly of the discharge chamber, because the discharge chamber can be constructed with only one or two bonds between the members. The reduction in the number of bonds has the advantages of expediting assembly of the discharge chamber, reducing the number of potential bond defects during manufacturing, and reducing the possibility of breakage of the discharge chamber at a bond region during handling. One or more of the members may also include a radially directed flange which allows the members to be precisely aligned during assembly to improve the quality of the lamp.