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:
Jun. 13, 2000
Filed:
Sep. 30, 1998
Takeshi Shinoda, Tokyo, JP;
Mitsomi Electric Co., Ltd., , JP;
Abstract
A pair of C-shaped magnets are fitted to a resin holder and inserted as a unit into a cup-shaped motor case. The resin holder has a diameter that is slightly greater than the inside diameter of the motor case, but includes resilient elements that are compressible during insertion of the resin holder and the magnets. After insertion the resilient elements urge the resin holder and the magnets into frictional contact with the inside of the motor case, thereby retaining the magnets in place without the need for adhesive. A U-shaped groove in the resin holder is engaged by a positioning projection in the motor case to establish the rotational positioning of the resin holder and thereby the rotational positioning of the C-shaped magnets. A rotor is rotationally fixed in the motor case on a shaft which rotates in the motor case at one end and in a bracket covering the open end of the motor case at the other end.