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. 31, 2022
Filed:
Mar. 05, 2018
Hitachi Industrial Products, Ltd., Tokyo, JP;
Hayato Kunishi, Tokyo, JP;
Tomohiro Naruse, Tokyo, JP;
Takeshi Kazama, Tokyo, JP;
Kazuo Takeda, Tsuchiura, JP;
Hiroaki Yoshimura, Tokyo, JP;
Hitachi Industrial Products, Ltd., Tokyo, JP;
Abstract
There is provided a multistage centrifugal fluid machine capable of improving efficiency of an operation for assembling an inner casing to a high pressure side head flange. The multistage centrifugal fluid machineincludes a rotorprovided with a plurality of impellers (to) in an axial direction, a cylindrical outer casing, and an inner bundlethat is fitted with the outer casingto form a flow passage for the working fluid. The inner bundleincludes a high pressure side head flange, a low pressure side head flange, and an inner casingdisposed between the high pressure side head flangeand the low pressure side head flange. The high pressure side head flangeand the inner casingare fastened with a first boltvia an elastic body