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:
Feb. 27, 1990
Filed:
Sep. 19, 1988
Applicant:
Inventor:
Yasunori Hiroshima, Tokyo, JP;
Assignee:
Pioneer Electronic Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B / ; H04N / ;
U.S. Cl.
CPC ...
350253 ; 358231 ; 313 20 ;
Abstract
A coupler contains cooling liquid between the front face of a projection tube and a lens that forms the screen of a projection television receiver. The coupler has a multiplicity of large and small fins extending into the cooling liquid and parallel to the center line of the tube to dissipate heat. The fins are closely spaced from each other.