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:
Apr. 30, 2024
Filed:
Jul. 09, 2020
Hitachi Industrial Equipment Systems Co., Ltd., Tokyo, JP;
Hitachi Industrial Equipment Systems Co., Ltd., Tokyo, JP;
Abstract
A scroll fluid machine includes: a fixed scrollhaving a helical wrap; an orbiting scrollhaving a helical wrap; a drive shaftthat causes the orbiting scrollto orbit relative to the fixed scroll; and a helical tip sealA inserted into a seal grooveA of the wrap. The tip sealA has: a grooveA that has an opening at a central portion of a sliding surfacein the seal width direction; and a communication grooveA communicating between the inside of the grooveA and a working chamber Son the inner side in the wrap width direction. In grooveA the differential pressure (PH-PL) is equal to or higher thanMpa between the working chamber Sand a working chamber Son the outer side in the wrap width direction.