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:
Apr. 24, 2012
Filed:
Nov. 06, 2008
Applicant:
Takeshi Saito, Yokohama, JP;
Inventor:
Takeshi Saito, Yokohama, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03B 21/22 (2006.01);
U.S. Cl.
CPC ...
Abstract
A roll bar for protecting a projection mirror is attached so as to avoid exerting an external force to the projection mirror portion, direct thereto upon a turnover the projection apparatus. Further, in the case of no attachment of the roll bar for protecting the projection mirror portion, the projector apparatus is prevented from being started. Further, when the projector apparatus is carried away, the roller bar for protecting the projection mirror serves as a handle.