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:
Mar. 12, 2002
Filed:
Jul. 16, 1999
Tetsuaki Bundo, Kitakyushu, JP;
Koji Kita, Kitakyushu, JP;
Nobuyuki Yamada, Kitakyushu, JP;
Hiroaki Nagai, Kitakyushu, JP;
Hirotaka Ishibashi, Kitakyushu, JP;
Susumu Narita, Kitakyushu, JP;
Koichi Hayashi, Kitakyushu, JP;
Toto, Ltd., Fukuoka, JP;
Abstract
In a discharge lamp sealing apparatus , luminescent substances are charged into an arc tube through an opening thereof, and an electrode member is then inserted into the arc tube through the opening 13 . A lower end of the arc tube is supported by a support jig in a state that a glass ring is placed around the circumference of the opening . The arc tube is set in an air-tight condition by a feeding conduit and inserted into a heating unit . The heating unit fuses the glass ring with heat of an infrared lamp and thereby seals the opening . During the sealing process, one end of the arc tube is supported by the support jig . The support jig is mainly made of a material having a greater thermal conductivity than that of the material of the arc tube , for example, a metal material like Al or Cu. This arrangement enables heat to be readily conducted from the arc tube to the support jig and accordingly prevents a temperature rise in the arc tube . This prevents the luminescent substances from being vaporized and released from the arc tube