US Patent 7491044 Sealing device of fluid machinery

Patent 7491044 was granted and assigned to Anest Iwata on February, 2009 by the United States Patent and Trademark Office.

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Is a

Patent

Patent attributes

Current Assignee

Anest Iwata

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

7491044

Date of Patent

February 17, 2009

Patent Application Number

11861743

Date Filed

September 26, 2007

Patent Primary Examiner

‌

Theresa Trieu

Patent abstract

A sealing device includes a stationary member, an orbiting member, a tip end surface of which slides on an inner face of the stationary member, and a sealing member to be fitted into a sealing groove engraved on the tip end surface. A sliding contact surface of the sealing member is pressed onto an inner surface of the stationary member with a predetermined force to slide on the inner surface in order that fluid sealing is secured between the sliding contact surface of the sealing member and the inner surface of the stationary member. The sealing member is divided into two parts of an upper ring and a lower ring, with the upper ring contacting the sliding contact surface and the lower ring facing a bottom surface of the sealing groove.