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.

Date of Patent:
Dec. 03, 2024

Filed:

Jun. 06, 2019
Applicant:

Nippon Muki Co., Ltd., Tokyo, JP;

Inventors:

Hirokazu Izumiya, Yuki, JP;

Osamu Kitagawa, Yuki, JP;

Shiro Hayashi, Yuki, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 46/10 (2006.01); B01D 46/52 (2006.01);
U.S. Cl.
CPC ...
B01D 46/523 (2013.01); B01D 46/10 (2013.01); B01D 46/522 (2013.01);
Abstract

A filter pack includes a pleated filter medium and spacing members that maintain a distance between adjacent mountain or valley folded portions of the filter medium. The filter medium includes pairs of extension portions that extend to both sides of folds of the filter medium and face each other when filter medium is folded. The plurality of spacing members include paired spacing members that are respectively provided on the extension portions so as to linearly extend in a direction that is orthogonal to the folds. The paired spacing members are in contact with each other when the filter medium is folded. Surfaces of the paired spacing members that come into contact with each other each include a flat surface that extends in a direction that is orthogonal to a direction in which the spacing members face each other when viewed along an extending direction of the spacing members.


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