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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 11091622 B1

PDFFull Text
Date of Patent:
Aug. 17, 2021

Filed:

Feb. 08, 2018

Sealing material

Applicant:

Nok Corporation, Tokyo, JP;

Inventors:

Asahi Kitagawa, Ibaraki, JP;

Yuichi Suzuki, Ibaraki, JP;

Assignee:

NOK Corporation, Tokyo, JP;

Attorney:

The Marbury Law Group, PLLC

Primary Examiner:

Brieann R Johnston

Int. Cl.
CPC ...
C08L 27/18 (2006.01); C08K 3/22 (2006.01); C08K 3/08 (2006.01); F16J 15/20 (2006.01); F16J 15/3284 (2016.01); C08K 3/013 (2018.01); C09J 127/18 (2006.01);
U.S. Cl.
CPC ...
C08L 27/18 (2013.01); C08K 3/08 (2013.01); C08K 3/22 (2013.01); C09J 127/18 (2013.01); F16J 15/20 (2013.01); F16J 15/3284 (2013.01); C08K 3/013 (2018.01); C08K 2003/085 (2013.01); C08K 2003/2203 (2013.01); C08K 2003/2206 (2013.01); C08K 2003/2217 (2013.01); C08K 2003/2227 (2013.01); C08K 2003/2237 (2013.01); C08K 2003/2248 (2013.01); C08K 2003/2251 (2013.01); C08K 2003/2289 (2013.01); C08K 2201/003 (2013.01); C08K 2201/014 (2013.01);
Abstract

Provided is a sealing material having abrasion resistance usable for even construction machinery operated under severe conditions while keeping mechanical strength thereof. The sealing material includes a fluorinated resin composition containing the following materials (1) and (2), and further containing the following material (3) or (4). The materials are: (1) fluorinated resin, (2) bronze, (3) tricobalt tetraoxide, (4) a composite metal oxide containing cobalt and aluminum, and further containing at least one of metals selected from the group of chromium, titanium, magnesium, calcium, and lithium. Preferably, the fluorinated resin is polytetrafluoroethylene. Further, the sealing material is usable for construction machinery.

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