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:
Dec. 16, 2025
Filed:
Sep. 22, 2021
Fujitsu General Limited, Kanagawa, JP;
Takashi Suzuki, Kanagawa, JP;
FUJITSU GENERAL LIMITED, Kanagawa, JP;
Abstract
A compressor includes a rotor core, a stator configured to rotate the rotor core about a rotational axis, and a compressing unit that is driven as the rotor core is rotated, wherein the rotor core includes a stack of a plurality of core sheets, each core sheet of the core sheets has a balancing hole by which a center of a mass of the core sheet is offset in a radial direction from the rotational axis, the rotor core includes an eccentric portion and an eccentricity alleviating portion, the center of a mass of the eccentric portion is offset in the radial direction from the rotational axis, and in the eccentricity alleviating portion, the eccentricity of the balancing holes of some of the core sheets is canceled out by the eccentricity of the balancing holes of others of the core sheets.