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. 03, 2013
Filed:
Oct. 20, 2009
Jun Morita, Yuki, JP;
Hitoshi Niinuma, Yuki, JP;
Norikazu Shinya, Yuki, JP;
Tomoyuki Hasegawa, Yuki, JP;
Osamu Kitayama, Yuki, JP;
Jun Morita, Yuki, JP;
Hitoshi Niinuma, Yuki, JP;
Norikazu Shinya, Yuki, JP;
Tomoyuki Hasegawa, Yuki, JP;
Osamu Kitayama, Yuki, JP;
Nippon Muki Co., Ltd., Taitou-Ku, JP;
Abstract
The invention provides a filter pack of which the mass is not increased, and moreover, the effective filter medium area is not reduced, and of which the pressure drop is sufficiently low, and the strength is sufficiently high, and an air filter using this. A pleated air filter pack is configured in such a way that dot embossed projections are provided on front and rear surfaces of a filter medium made of a non-woven fabric, the filter medium is folded in zigzag shape along creases of pleats, and the opposing embossed projections are brought into contact with each other when the filter medium is folded, thus maintaining the intervals between the filter media.