Inventors: Akio Konishi, Hyogo (JP); Koichiro Hirabayashi, Osaka (JP)
Assignee: Panasonic Corporation, Osaka (JP)
Notice: Subject to any disclaimer, the term of this patent is extended or adjusted under 35
U.S.C. l54(b) by 0 days. Appl. No.: 12/866,048 PCT Filed: Feb. 9, 2009
§ 371 (0)0), (2), (4) Date:
PCT Pub. No.: WO2009/098906 PCT Pub. Date: Aug. 13, 2009
Prior Publication Data US 2011/0002684 A1 Jan. 6,2011
Foreign Application Priority Data
(JP) ............................... .. 2008-027449
Int. Cl.
G03B 17/00 (2006.01)
G03B 11/04 (2006.01)
U.S. Cl. ...................................... .. 396/448; 359/511
Field of Classification Search ................ .. 396/448; 359/511
See application file for complete search history.
5,754,906 A 5/1998 Yoshida 5,892,998 A * 4/1999 Kodaira et al. ............. .. 396/448 2007/0133981 A1* 6/2007 Tsuji ........................... .. 396/448 FOREIGN PATENT DOCUMENTS JP 58-077971 5/1983 JP 09-061887 3/1997 JP 10-068984 3/1998 JP 2001-075148 3/2001 JP 2001-188283 7/2001 JP 2003-164128 6/2003 OTHER PUBLICATIONS
International Search Report for corresponding International Application No. PCT/JP2009/000507 mailed May 19, 2009.
Form PCT/ISN237 and partial English translation for International Application No. PCT/JP2009/000507 dated May 19, 2009.
Primary Examiner * Rochelle-Ann J Blackman (74) Attorney, Agent, or Firm * Renner, Otto, Boisselle & Sklar, LLP
A barrier unit, of Which the cap edge is not easily deformed even under some external force, is provided.
The barrier unit includes: a base, Which defines a first WindoW; a cap, Which defines a second WindoW and Which is arranged so that the second WindoW faces the first WindoW; and at least one blade, Which is arrangedbetWeen the base and the cap so as to open or close With respect to the first and second WindoWs. A surface of the cap that is opposed to the at least one blade has a notched portion around the second WindoW.
2 Claims, 4 Drawing Sheets
