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:
Feb. 16, 2016

Filed:

Jan. 24, 2014
Applicant:

Ichikawa Co., Ltd., Bunkyo-ku, JP;

Inventors:

Takashi Oouchi, Tokyo-to, JP;

Shigeyuki Okamoto, Tokyo-to, JP;

Yasuhiko Kobayashi, Tokyo-to, JP;

Yasuyuki Ogiwara, Tokyo-to, JP;

Masashi Kato, Tokyo-to, JP;

Assignee:

Ichikawa Co., Ltd., Bunkyo-ku, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D21F 7/08 (2006.01); D03D 13/00 (2006.01);
U.S. Cl.
CPC ...
D21F 7/08 (2013.01); D21F 7/083 (2013.01); D03D 13/00 (2013.01);
Abstract

A felt that further equalizes a pressure state under pressurization by a press so as to smooth the surface of a wet paper web without causing marking on the surface thereof and allow water to be uniformly squeezed out from the wet paper web without crushing the wet paper web is provided by a papermaking press felt wherein a difference between a maximum value and a minimum value of an interval between an upper knuckle portion and an upper knuckle portion, an interval between upper and lower knuckle portions, or an interval between a lower knuckle portion and a lower knuckle portion is arranged to be a value corresponding to 1.0 piece or less of an upper warp yarn in a base fabric.


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