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. 26, 2013
Filed:
Apr. 04, 2008
Applicants:
Koushi Itoh, Tokyo, JP;
Hirokatsu Shinohara, Tokyo, JP;
Tomoaki Murata, Tokyo, JP;
Inventors:
Assignees:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F01D 1/16 (2006.01); F01D 15/06 (2006.01);
U.S. Cl.
CPC ...
Abstract
A high-speed air spindle including a spindlesupported by a first bearingat the leading end side in the axial direction and a second bearingat the rear end side, a driving air turbinefixed in a spindle portion between the first bearingand the second bearing, a speed-increasing air turbinefixed in a spindle portion ahead of the first bearing, and an air passageof an exhaust of compressed air supplied in the driving air turbine, flowing in the sequence of the first bearingand the speed-increasing air turbine