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:
Sep. 01, 1981
Filed:
Oct. 01, 1979
Applicant:
Inventors:
Yoshimitsu Nakamura, Settsu, JP;
Masami Otada, Shijonawate, JP;
Assignee:
Matsushita Electric Works, Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02K / ;
U.S. Cl.
CPC ...
29597 ; 29516 ; 29598 ; 310 42 ; 310234 ;
Abstract
An improved method of manufacturing coreless armatures typically for coreless motors, according to which a coreless cylindrical coil and an insulative disk member carrying commutator segments and rotary shaft are mechanically strongly coupled together without any adhesive agent, is provided. A radially inward compressive force is applied to the outer periphery of the coil within which the disk member is inserted at position for the coupling until coil windings partly bulge inwardly to clamp the peripheral edge of the disk member whereas a substantial part of the windings is compressed dense and into a smooth cylindrical shape.