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:
Aug. 29, 1995
Filed:
Aug. 03, 1993
Karl-Heinz Gleixner, Munchen, DE;
Ulrich Henger, Wipperfurth, DE;
Abstract
To facilitate manufacture and assembly of a high-pressure discharge lamp ing an inner discharge vessel (4) within an outer bulb (1), and which is protected against explosion or bursting of the discharge vessel by a protective sleeve or body (8), typically formed of two sleeves or tubes (8a, 8b) of quartz glass or hard glass, the two glass tubes surround the discharge vessel (4) over its entire coaxial length and, when coated with an infrared (IR) reflective coating and an ultraviolet (UV) radiation coating, additionally function as a heat retention or heat damming element and a UV radiation protective element. Two ceramic insulating centering and holding elements are carried by a lamp holder structure (9), engaging the open ends of the glass tubes (8a, 8a). The ceramic elements are formed with steps (20a, 20b, 20c) or grooves (520a, 520b) to position the glass tubes spaced from each other and concentric with respect to the discharge vessel. Openings (13, 513) in the ceramic elements permit passage of the connecting leads (6) to the discharge vessel (4). The ceramic elements can be cruciform, star or spider-shaped, or ring-shaped with an apertured web or a transverse rib (19), to provide for pneumatic communication to the interior of the protective body (8) and easy evacuation of the outer bulb (1).