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:
Jun. 02, 2026
Filed:
Feb. 14, 2023
Kabushiki Kaisha Toyota Jidoshokki, Kariya, JP;
Keishiro Muto, Kariya, JP;
Kazunari Honda, Kariya, JP;
Yuji Hashimoto, Kariya, JP;
Hiroyuki Kobayashi, Kariya, JP;
Yosuke Inagaki, Kariya, JP;
Akito Sugahara, Kariya, JP;
KABUSHIKI KAISHA TOYOTA JIDOSHOKKI, Kariya, JP;
Abstract
If, in a virtual plane orthogonal to a drive axis (X), a midpoint (MP) between the center of a drive-side base circle () and the center of a driven-side base circle () is defined as a working point of compression loading generated in the radial direction of the drive axis (X), a direction orthogonal to a virtual line (VL) connecting two contact points, constituted of a first contact point (P) and a second contact point (P), at which a side surface of a driving spiral () and a side surface of a driven spiral () contact at an outermost circumferential side is defined as the loading direction (LD) of the compression loading, and the range over which the loading direction (LD) fluctuates during one revolution of a drive scroll () is defined as a fluctuation range (FR), a stator () defines a fixed axis (FX) inside a housing (), the drive axis is defined by a rotor () and is set so as to separate from the fixed axis (FX) in the loading direction (LD) included in the fluctuation range (FR) when not actuated, and so as to match or approach the fixed axis (FX) when actuated.