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:
Oct. 03, 2000
Filed:
Jul. 27, 1998
Shigeaki Yamanaka, Hiroshima, JP;
Satsuo Morita, Hiroshima, JP;
Kubota Iron Works CC. Ltd., Hiroshima, JP;
Abstract
A water pump is capable of avoiding adverse influence of water leakage from a swirl chamber to a bearing. The water pump includes a pump housing, a rotary shaft supported by a bearing mounted on a boss portion of the pump housing, an impeller fixed on an end portion of the rotary shaft extending into a swirl chamber defined within the pump housing, and a mechanical seal disposed between the impeller and the bearing. The water pump further includes a seal ring disposed within a space defined between the mechanical seal and the bearing for dividing the space into a first and second vapor chambers with drain holes provided for respective first and second vapor chambers.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile