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. 29, 2015
Filed:
Apr. 22, 2010
Hirohumi Hirata, Aichi, JP;
Tetsuzo Ukai, Aichi, JP;
Hiroshi Yamazaki, Aichi, JP;
Takahide Ito, Aichi, JP;
Hirohumi Hirata, Aichi, JP;
Tetsuzo Ukai, Aichi, JP;
Hiroshi Yamazaki, Aichi, JP;
Takahide Ito, Aichi, JP;
MITSUBISHI HEAVY INDUSTRIES, LTD., Tokyo, JP;
Abstract
An object is to provide a scroll compressor capable of preventing degradation in performance and the occurrence of abnormal noise due to a torsional moment applied to an orbiting scroll, by utilizing the structural advantages of so-called stepped scroll compressors. In a so-called stepped scroll compressor (), in a pair of compression chambers () arranged in a point-symmetrical configuration among a plurality of compression chambers (), the volume Vof the compression chamber () formed on the ventral-surface side of the fixed spiral wrap (B) of the fixed scroll () when intake is cut off and the volume Vof the compression chamber () formed on the ventral-surface side of the orbiting spiral wrap (B) of the orbiting scroll () are different from each other.