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:
Jul. 08, 2014
Filed:
Jun. 25, 2012
Taiji Hashimoto, Toshima-ku, JP;
Tao HU, Toshima-ku, JP;
Eiji Okumachi, Sanda, JP;
Masanobu Ninomiya, Sanda, JP;
Taiji Hashimoto, Toshima-ku, JP;
Tao Hu, Toshima-ku, JP;
Eiji Okumachi, Sanda, JP;
Masanobu Ninomiya, Sanda, JP;
Nippon Pillar Packaging Co., Ltd., Osaka, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A shaft-seal device for high-temperature fluid including a seal case () formed as a metallic cylindrical structure of a single unit and comprised of a main body portion (), first and second holding portions (), first and second partition portions (), a channel formation portion () forming a minute annular channel () with the outer circumference surface of a rotary shaft (), and an o-ring holding portion (). The seal case is installed in an apparatus housing () with first and second o-rings () in between. The intra-seal case region (A), in which sealing rings () of mechanical seals () are provided, and the high-temperature fluid region, which is an intra-apparatus housing region (A), are partitioned by a cooling chamber () into and from which coolant () is supplied and discharged via feed/discharge coolant paths ().