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:
Dec. 21, 2004
Filed:
Jul. 01, 2003
Applicant:
Inventors:
Chih-Kuang Wang, Hsinchu, TW;
Zen-Gwo Sun, Yang-Mei, JP;
Assignee:
Microtek International, Inc., Hsinchu, TW;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03B 2/122 ; G03B 2/116 ; G03B 2/118 ;
U.S. Cl.
CPC ...
G03B 2/122 ; G03B 2/116 ; G03B 2/118 ;
Abstract
A projector includes a casing, a light source, an optical engine, inlet ports and outlet ports formed on the casing, and a fan mounted in the casing. The fan sucks air streams from the inlet ports into the casing and forces the air streams to flow out of the casing via the outlet ports. A buffer chamber is defined among the fan, the outlet ports, and the casing. The casing includes a first housing and a second housing. The first housing is retractable relative to the second housing so that a volume of the buffer chamber may be changed.