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. 31, 2024
Filed:
Dec. 24, 2020
Applicant:
Johnson Electric International Ag, Murten, CH;
Inventors:
Assignee:
JOHNSON ELECTRIC INTERNATIONAL AG, Murten, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02K 9/06 (2006.01); B25F 5/00 (2006.01); H02K 1/276 (2022.01); H02K 7/14 (2006.01); H02K 21/14 (2006.01);
U.S. Cl.
CPC ...
H02K 9/06 (2013.01); H02K 1/276 (2013.01); H02K 7/145 (2013.01); H02K 21/14 (2013.01); B25F 5/008 (2013.01);
Abstract
The invention provides a power tool, a motor and a rotor assembly of the motor. The rotor assembly includes a rotating shaft, and a rotor body, a limiting member and a cooling fan fixed on the rotating shaft, the limiting member and the cooling fan are respectively arranged at both axial ends of the rotor body, the rotor body includes a rotor core and magnets fixed in the rotor core, the limiting member and the cooling fan jointly limit an axial displacement and a radial displacement of the magnets.