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:
Sep. 15, 1992
Filed:
Nov. 02, 1989
Applicant:
Inventor:
Minoru Watanuki, Tokyo, JP;
Assignee:
ORC Manufacturing Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F21V / ;
U.S. Cl.
CPC ...
362218 ; 362293 ; 362294 ; 362318 ; 362373 ; 16510432 ; 16510433 ; 313 22 ; 313 36 ;
Abstract
In a cooling liquid recirculation system, walls of transparent jacket tubes for cooling a mercury-vapor lamp, which jacket tubes are provided separately from the mercury-vapor in accordance with the prior art are formed in optical filters to thereby decrease the temperature of an object to be illuminated. A recirculation unit of cooling liquid for recirculation of the jacket tubes is connected through an elastic duct to a light source unit such as a mercury-vapor lamp. These components are movable for practical use.