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:
Jan. 22, 2002
Filed:
Feb. 07, 1996
Takashi Eino, Tsuchiura, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
By changing a vane height to produce different vanes from master vanes, different impellers are produced, and therefore there can be obtained an inexpensive and high-reliability multistage centrifugal compressor and an impellers therefor. An impeller for multistage centrifugal compressor, which is to be mounted on a rotary shaft, comprises a plurality of vanes disposed between a disk and a shroud and separated from one another equiangularly. By changing the vanes of the impeller only in height without changing the configuration, vanes can be obtained, and then a different impeller comprising the disk, a shroud and vanes is also obtained. Since a whole of the vane has a configuration identical to a part of the vane, these vane can be produced by a single pair of the pressing dies.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile