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. 16, 2000
Filed:
Dec. 24, 1997
Katsumi Kimura, Kawasaki, JP;
Kazuhiko Sugiyama, Fujisawa, JP;
Kazuo Hattori, Yokosuka, JP;
Michio Otsuka, Yokohama, JP;
Hiroshi Ogata, Yokohama, JP;
Ebara Corporation, Tokyo, JP;
Abstract
A fluid coupling includes an input shaft having a speed-increasing gear train, an impeller operatively connected to the input shaft, an impeller casing fixed to the impeller, and an output shaft having a runner operatively combined with the impeller. The impeller, the runner and the impeller casing jointly define a working fluid chamber. The impeller casing and the impeller are made of a material having a small specific gravity and a high allowable stress range for reducing centrifugal stresses developed therein when the impeller casing rotates at high speeds. The material may be a titanium alloy or an aluminum alloy.