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. 06, 2002
Filed:
Apr. 20, 2000
Keisaku Iwakata, Oyama, JP;
Komatsu, Ltd., Tokyo, JP;
Abstract
A liquid seal structure has a tapered seal land provided on an outer circumference of a rotation shaft with an outer circumference on a sealing liquid side being diametrally larger than an outer circumference opposite to the liquid side, a tapered seal lip in contact with the outer circumference of the tapered seal land, and a seal lip support member for supporting the tapered seal lip. As a result, even when liquid invades into a seal surface between the tapered seal land and the tapered seal lip, the liquid moves elevationally by a centrifugal force in accordance with rotation of the rotation shaft to be returned to the sealing liquid side on account of sealing by a tapered surface. Therefore, the liquid does not leak to a gas side, so that sealability can be secured for a long time to perform stable sealing.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile