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:
Mar. 17, 2020
Filed:
Dec. 07, 2015
Mitsubishi Heavy Industries Thermal Systems, Ltd., Minato-ku, Tokyo, JP;
Abstract
In a scroll fluid machine, a thinned section () is provided in correspondence with a position at which the wrap height of a spiral wrap (B,B) changes due to a step part. The thinned section () is provided on the front-side surface or the rear-side surface of a tooth tip section of at least one of the spiral wraps (B,B) of at least one of partner scrolls () respectively engaging with scrolls (). The thinned section () is provided in the direction in which the wrap thickness decreases so as to extend over at least a reduced-machining-accuracy area (), which is an area where the machining becomes discontinuous due to at least a change in the wrap height. Thus, a contact failure between the spiral wraps (B,B) is avoided in the area where the machining accuracy relatively decreases as a result of increasing the machining speed, thereby achieving both improved productivity and maintained performance.