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.:
Date of Patent:
Feb. 08, 2011
Filed:
Jul. 01, 2005
Makoto Ueda, Sanda, JP;
Satoshi Fujiwara, Sanda, JP;
Mitsuru Kudari, Sanda, JP;
Masanobu Ninomiya, Sanda, JP;
Makoto Ueda, Sanda, JP;
Satoshi Fujiwara, Sanda, JP;
Mitsuru Kudari, Sanda, JP;
Masanobu Ninomiya, Sanda, JP;
Nippon Pillar Packing Co., Ltd., Osaka, JP;
Abstract
A mechanical non-contact gas seal including a rotary scaling ring and a stationary sealing ring that is engaged and held in an inner periphery of a seal case by means of O-rings so as to move in an axial direction thereof. The O-rings engage with the outer periphery of the stationary sealing ring and come in press contact with the inner periphery of the seal case to seal a gap between the stationary sealing ring and the seal case while allowing the stationary sealing ring to move in an axial direction. A resin coating of a thickness in the range of 5 to 100 μm is formed on the inner periphery of the seal case at least within a range in which the O-rings relatively move with the movement of the stationary sealing ring.