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:
Apr. 19, 1983
Filed:
Dec. 15, 1980
Anton J Bouman, Eindhoven, NL;
Eise B Geertsema, Eindhoven, NL;
U.S. Philips Corporation, New York, NY (US);
Abstract
An oxidation-sensitive element electrically connected in series with the discharge vessel of a high-pressure discharge lamp extinguishes the lamp when the element, upon fracture of the outer envelope of the lamp, is oxidized and prevents damage as a result of emission of UV radiation. In a high-pressure discharge lamp according to the invention, the oxidation-sensitive element (7) consists of an electric insulator (20) on which two spaced conductors (21, 22) are provided which are interconnected electrically by a vapor-deposited layer (23) of an oxygen-gettering metallic, evaporating getter. Opposite to the insulator (20) is present a holder (8) from which the getter was previously evaporated on to the insulator.