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:
Jan. 05, 1988
Filed:
Nov. 26, 1985
Abstract
Low-power lamps, that is, lamps having a power rating of less than 250 W, g. less than 100 W, and, for instance 40 W, have an arc tube which has a fill of mercury with additives of metal halides and a noble gas. To permit universal mounting application of the lamp, the arc tube (2) has a single-press seal (3) at one side thereof in which the electrodes are retained, the arc tube being surrounded by an envelope having, likewise, a single-ended, single-press seal (5) located at the same side as the press seal of the arc tube, through which continuation elements (8, 10, 12, 14; 9, 11, 13, 15) of the electrode elements are conducted. The arc tube and the envelope are so closely spaced that heat radiated from the arc tube to the envelope is effectively reflected to the arc tube without substantial radiation by the envelope. The arc tube and/or the envelope may be frosted, and made, respectively, of hard glass or quartz glass which has low transmissivity in the UV and IR ranges of radiation.