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:
Aug. 16, 1983
Filed:
Oct. 20, 1982
Muneo Maegawa, Hitachi, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A rotary shaft seal device in a hydraulic machine. With the water seal segments in the conventional water seal device, a gap tends to be generated between the inner peripheral surface of the segment packing and the outer peripheral surface of a liner of the rotary shaft due to the wear during use and progressively developed. The present invention contemplates to minimize the gaps between the adjacent segments and guide members interposed between the adjacent segments are solidly secured, whereby the flow rate of water leakage through the segments is reduced and the segments themselves are improved in mechanical strength, so that the segments can be reduced in size and the water seal device itself can be rendered compact in size.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile