US Patent 7341256 Seal ring

Patent 7341256 was granted and assigned to nok (retail company) on March, 2008 by the United States Patent and Trademark Office.

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Patent Inventor Names

Naohiro Jotaki0

Nobuyuki Eguchi0

Shinya Nakaoka0

Takaaki Yasudomi0

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edited on 1 Sep, 2023

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Patent abstract

A seal ring which maintains a stable sealing performance over a long term is provided. In a first seal portion, linear contact portions which come into linear contact with the sidewall surface of an annular groove on the unsealed fluid side are continuously extended over the whole circumference of the seal ring from one side of a separation portion to the other side thereof, and the linear contact part provided at the convex part of the separation portion, and the linear contact part provided at the concave part of the separation portion are located at a distance in the radial direction of the seal ring.

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Official Website

https://pdfpiw.uspto.gov/.piw?Docid=073412560

Edits on 21 May, 2023

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