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. 27, 2016
Filed:
Oct. 24, 2013
Johnson Electric S.a., Murten, CH;
Awade Badafem, Shenzhen, CN;
Min Li, Shenzhen, CN;
JOHNSON ELECTRIC S.A., Murten, CH;
Abstract
A brushed rotatory device () includes a stator, a rotor (), an impeller (), and a chamber () accommodating the commutator () and brushes () to contain debris from consumed brushes. The impeller causes air flow to dissipate heat generated by the rotatory device and may further carry the consumed brush debris away. The rotatory device includes flow channel(s) () which communicates with the impeller exhaust and accommodates absorbent or filtering materials () to trap the debris in the air flow. The commutation area may be double contained by using flange(s) () or wall(s) () to trap or confine a greater part of the debris in a localized region or to reduce noise from the rotatory device operations.