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:
Jul. 04, 1978
Filed:
Mar. 08, 1976
Applicant:
Inventor:
Nobuteru Maekawa, Hikone, JP;
Assignee:
Primary Examiner:
Int. Cl.
CPC ...
H02K / ;
U.S. Cl.
CPC ...
310237 ; 310266 ;
Abstract
A rotor for coreless motor comprises a cylindrical coil of a wire wound as repetitively folded back to alternately change current flowing direction with respect to magnetic field of associated stator of the motor and inner conductor of the wire is exposed at a plurality of portions equally spaced in the folded back parts forming an axial endwise edge of the cylindrical shape of the coil. The conductor exposing portions corresponds in number to stator poles and thus commutator segments, the latter of which are disposed adjacent and around an end of rotor shaft and connected respectively at a radially extended end substantially directly to the coil's conductor at each of its exposed portions.