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. 11, 2011
Filed:
Mar. 06, 2008
Svetlana Selezneva, Schenectady, NY (US);
Mohamed Rahmane, Clifton Park, NY (US);
Sairam Sundaram, Guilderland, NY (US);
Andrey Meshkov, Niskayuna, NY (US);
Garry R. Allen, Chesterland, OH (US);
Viktor Varga, Solon, OH (US);
Agoston Boroczki, Budapest, HU;
Svetlana Selezneva, Schenectady, NY (US);
Mohamed Rahmane, Clifton Park, NY (US);
Sairam Sundaram, Guilderland, NY (US);
Andrey Meshkov, Niskayuna, NY (US);
Garry R. Allen, Chesterland, OH (US);
Viktor Varga, Solon, OH (US);
Agoston Boroczki, Budapest, HU;
General Electric Company, Niskayuna, NY (US);
Abstract
A high intensity discharge lamp, in certain embodiments, includes a uniquely shaped shoulder and dimensions selected to reduce stress and associated cracking. The uniquely shaped shoulder has a variable diameter, such as, e.g., a cup-shaped geometry, a curved funnel-shaped geometry, or a conical-shaped geometry. The selected or optimized dimensions may include a tip-to-neck distance, a tip-to-wall distance, and an internal diameter of the lamp. The selected or optimized dimensions also may include a uniform wall thickness, an arc gap distance, and an electrode thickness. These dimensions and shapes are selected to reduce undesirably high maximum stresses and temperatures in the lamp. As a result, the lamp is able to provide higher performance with a longer life due to a decreased risk of stress cracking during rapid start up and steady state operation.