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:
Feb. 24, 2015
Filed:
Apr. 05, 2011
Applicants:
Katsuya Fujisaku, Yokohama, JP;
Noriyasu Sugitani, Yokohama, JP;
Inventors:
Katsuya Fujisaku, Yokohama, JP;
Noriyasu Sugitani, Yokohama, JP;
Assignee:
IHI Corporation, , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F04D 5/00 (2006.01); F04D 29/053 (2006.01); F04D 25/04 (2006.01);
U.S. Cl.
CPC ...
F04D 29/053 (2013.01); F04D 25/04 (2013.01);
Abstract
Provided is a drive shaft structure including: a drive shaft which transmits the drive force; and a seal member which is provided to come into close contact with the outer peripheral surface of the drive shaft. In the drive shaft structure, the drive shaft includes a second surface located closer to the inner side of the radial direction than the outer peripheral surface, and the second surface includes an index mark used to confirm information on the rotation of the drive shaft or information on the displacement thereof in the axial direction.