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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.:

US 10946837 B1

PDFFull Text
Date of Patent:
Mar. 16, 2021

Filed:

Jul. 07, 2017

Wiper blade rubber

Applicant:

Fukoku Co., Ltd., Ageo, JP;

Inventors:

Masaki Sakurai, Saitama, JP;

Hiroaki Ohsako, Saitama, JP;

Shuichi Ohtsubo, Saitama, JP;

Yasuyuki Okamoto, Saitama, JP;

Assignee:

FUKOKU CO., LTD., Saitama, JP;

Attorney:

Holtz, Holtz & Volek PC

Primary Examiner:

Gary K Graham

Int. Cl.
CPC ...
B60S 1/38 (2006.01); C09D 5/00 (2006.01); B60S 1/56 (2006.01); C09D 201/00 (2006.01); C08J 7/12 (2006.01); C08J 7/04 (2020.01); B60S 1/48 (2006.01);
U.S. Cl.
CPC ...
B60S 1/38 (2013.01); B60S 1/566 (2013.01); C08J 7/04 (2013.01); C08J 7/0427 (2020.01); C08J 7/123 (2013.01); C08J 7/126 (2013.01); C09D 5/00 (2013.01); C09D 201/00 (2013.01); B60S 1/487 (2013.01); B60S 2001/3829 (2013.01); B60S 2001/3836 (2013.01); C08J 2307/00 (2013.01); C08J 2311/00 (2013.01); C08J 2475/04 (2013.01);
Abstract

Provided is a wiper blade rubber which exhibits high adhesion to glass surfaces, excellent friction performance and excellent wiping performance, while being free from the occurrence of a bulge (blister) in a coating layer due to bleeding from a rubber substrate or blooming. A wiper blade rubber which has a lip part obtained by forming a coating layer on a rubber substrate by spray coating, and which is characterized in that: the coating layer is composed of a portion (A) that covers the rubber substrate and portions (B) that do not cover the rubber substrate; the portions (B) are a plurality of pores which are uniformly dispersed in the entire area of the coating layer and have diameters of 10 to 40 μm; and the ratio of the total area of portion (A) that covers the rubber substrate to the total area of the portions (B) that do not cover the rubber substrate is from 40:60 to 60:40.

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