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:
Jul. 02, 2024
Filed:
Jan. 18, 2022
Black & Decker Inc., New Britain, CT (US);
Ming Jin, Suzhou, CN;
Weifeng Qian, Suzhou, CN;
Changxing Lu, Suzhou, CN;
Tong Zheng, Suzhou, CN;
Fulong Liu, Suzhou, CN;
Yeli Gu, Suzhou, CN;
Black & Decker Inc., New Britain, CT (US);
Abstract
A motor assembly is provided including a stator assembly and a rotor assembly rotatably disposed relative to the stator assembly. The rotor assembly includes a rotor core having magnet pockets formed therethrough along a longitudinal direction, permanent magnets received within the magnet pockets, and a spring structure disposed in contact with the end of the rotor core. The spring structure includes spring elements configured to apply biasing forces to the permanent magnets along the longitudinal direction of the magnet pockets. Optionally a magnet retention end cap is provided to secure the spring structure to the end of the rotor core.