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. 25, 1994
Filed:
Jul. 27, 1992
Hamamatsu Photonics K.K., Shizuoka, JP;
Abstract
A discharge tube for emitting light of the present invention includes an inner bulb including a hollow portion for defining therein an arc discharge chamber which encloses therein gas for emitting light, the inner bulb further including a pair of electrodes and a pair of metal members each of which is connected to a corresponding one of the pair of electrodes, the pair of electrodes being projected in the arc discharge chamber from the inner bulb and the pair of metal members being projected outwardly of the inner bulb, the hollow portion having an outer diameter of a first value and an outer tube for sealingly enclosing therein the inner bulb, the outer tube including a small-diameter portion having an outer diameter of a second value which is equal to or smaller than the first value, wherein the inner bulb is held in the interior of the outer tube, with a gap being formed between an outer surface of the inner bulb and an inner surface of the outer tube, in such a manner that the outer tube supports the metal members projected outwardly of the inner bulb.