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:
Sep. 27, 2022
Filed:
Jul. 05, 2018
Mitsubishi Heavy Industries Thermal Systems, Ltd., Tokyo, JP;
Abstract
The present invention comprises: a blank forming step in which a casing blank () is formed by die-casting, the casing blank () having a first cylindrical section (), a second cylindrical section (), and an annular section () which includes a recess () recessed toward one side in an axial direction (O) from a first surface () facing the other side in the axial direction (O); and a cutting step in which the inner peripheral surface () of the second cylindrical section () and a second surface () of the annular section (), the second surface () facing the one side in the axial direction (O), are cut to connect the recess () to a compression section containing space (A) within the second cylindrical section (), thereby forming a flow passage. In the blank forming step, the casing blank () is formed such that a part of a side surface () of the recess () is disposed radially outside the inner peripheral surface () of the second cylindrical section ().