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:
Apr. 28, 2020
Filed:
May. 23, 2018
Mabuchi Motor Co., Ltd., Matsudo, Chiba, JP;
MABUCHI MOTOR CO., LTD., Matsudo, Chiba, JP;
Abstract
Provided is a brushed motor in which noise in a high rotational speed range is effectively decreased. A bar-shaped flat attachmentof synthetic resin is inserted along an axial line L into an opening of a slotformed in a coreof a rotor, and fixed with respect to the coreand/or windingsusing adhesive agent. The flat attachmenthas side surfacesand an inner peripheral surface. The side surfacesare engaged from an inner peripheral side with inclined surfacesof teethadjacent to each other across the opening of the slot. The inner peripheral surfaceof the flat attachmenthas two ridgesprotruding therefrom which are abutted against the windings. The flat attachmentcloses the opening of the slotand shapes an outer peripheral surfaceof the coreinto a flat cross sectional shape suitable for suppression of wind noise.