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.

Date of Patent:
Jul. 13, 2004

Filed:

Sep. 18, 2002
Applicant:
Inventors:

Naoki Itoh, Wako, JP;

Tsuneo Endoh, Wako, JP;

Yasunobu Kawakami, Wako, JP;

Ryuji Sano, Wako, JP;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F02B 5/304 ;
U.S. Cl.
CPC ...
F02B 5/304 ;
Abstract

An expansion unit ( ) for converting an expansion energy of pressure-increased steam into a rotation energy of an output shaft, wherein a cover member ( ) is provided on the casing outer surface of the expansion unit ( ). The cover member ( ) has a function of sealing the end section of an output shaft ( ) protruding beyond the casing outer surface against the outside and a function of recovering steam led out from the casing and has its pressured reduced after the conversion. The end section of the output shaft ( ) provided inside the cover member ( ) and a driven-side transmission shaft ( ) disposed outside the cover member ( ) are coupled with each other via a magnet type shaft coupling ( ) so as to be able to transmit power, whereby the output shaft ( ) and the driven-side transmission shaft ( ) can be coupled without steam in the expansion unit leaking outside.


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