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:
Nov. 25, 1986
Filed:
Aug. 09, 1984
Yuji Danno, Yokohama, JP;
Kouzou Kawashima, Yokohama, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
A metal vapor discharge lamp has a light emitting tube of translucent ceramics which includes a straight tube section of a predetermined diameter and a pair of tube end sections having their diameter gradually decreased from the straight tube section. The light emitting tube is formed such that a height from a corresponding sealing member to a boundary of the straight tube section and tube end section is greater than a height from the sealing member to the lower end of a radiator section of a discharge electrode and that a minimum radius of the tube end section of the light emitting tube is greater than an outer radius of the radiator section of the discharge electrode by a difference of 1.5 mm or less left therebetween.