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:
May. 01, 2012
Filed:
Feb. 18, 2011
Applicants:
Kiyoshi Kuroi, Matsumoto, JP;
Hiroyuki Shindo, Matsumoto, JP;
Inventors:
Kiyoshi Kuroi, Matsumoto, JP;
Hiroyuki Shindo, Matsumoto, JP;
Assignee:
Seiko Epson Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03B 21/56 (2006.01);
U.S. Cl.
CPC ...
Abstract
A screen unit includes: a screen member; a first support member which supports one end of the screen member; a second support member which supports the other end of the screen member; a stretching and contracting device which expands the screen member; and a tensioning member disposed on the side opposite to the side where the screen member is provided with respect to the stretching and contracting device to apply tension in a direction substantially parallel with the direction from the first support member to the second support member.