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. 02, 1986
Filed:
Jul. 30, 1984
Applicant:
Inventor:
Jan Janson, Eindhoven, NL;
Assignee:
U.S. Philips Corporation, New York, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02K / ;
U.S. Cl.
CPC ...
310156 ; 310268 ; 310 / ;
Abstract
A flat collectorless motor is described whose rotor has been provided with an axially magnetized annular magnet which cooperates with axial bounding surfaces of the stator poles outside the stator coil ends, which enables the axial height of the stator iron to be reduced without reducing the effective surface area of the stator teeth. This construction enables Hall elements to be mounted on a p.c. board, which Hall elements are arranged in the main field of the rotor magnet.