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:
May. 24, 1988
Filed:
Jul. 29, 1987
Osamu Sugimoto, Suita, JP;
Teiji Horita, Hikone, JP;
Katsutoshi Nii, Hitachi, JP;
Koozi Aizawa, Hitachi, JP;
Kazuhiko Kawaike, Katsuta, JP;
Ichiro Hitomi, Katsuta, JP;
Hisao Inoue, Hitachi, JP;
Hitachi, Ltd., Tokyo, JP;
The Kansai Electric Power Co. Ltd., Osaka, JP;
Abstract
An end face mechanical shaft seal for use in a hydraulic machine includes a seal ring assembly detachably secured to a seal casing and having a sealing face which makes a sliding and fluid-tight contact with an annular seat face presented by a flange on the rotor shaft. The seal ring assembly is of a cartridge type which includes a ring casing having an annular groove formed in one end surface thereof and a seal ring partly received in the groove and fixed to the ring casing by an adhesive. Each of the ring casing and the seal ring is constituted by a plurality of arcuate sections or segments which are connected together in the circumferential direction.