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. 18, 1989
Filed:
Feb. 26, 1988
Applicant:
Inventors:
Assignee:
Mabuchi Motor Co., , JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02K / ;
U.S. Cl.
CPC ...
310 45 ; 310 / ;
Abstract
A miniature motor using a rubber magnet for the permanent magnet for creating a field, in which a coating film is formed on the rubber magnet. The coating film is gas-impermeable, possibly of suitable synthetic resin, to prevent any harmful gas generated in the rubber magnet from escaping therefrom and damaging the contact surfaces of the motor.