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:
Mar. 03, 1992
Filed:
Jul. 31, 1990
Betina Desmarais, Exeter, NH (US);
Michael R Kling, Stratham, NH (US);
GTE Products Corporation, Danvers, MA (US);
Abstract
A method to press mold heavy wall metal halide lamps (with reduced glass mass in end seals) is disclosed. Wall temperature in a metal halide lamp may be normalized by varying the wall thickness in relation to the heat falling on the interior surface, and the heat lost through the exterior surface. Increasing the wall thickness, acts to spread the heat, and decrease the wall temperature. Thinning the wall, acts to concentrate the heat, and increase the wall temperature. By press molding the lamp glass and simultaneously reducing the glass mass in the end seals, the desired wall thickness may be obtained without excessive heat loss in the end seals to result in an isothermal internal profile.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile