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:
May. 22, 1984
Filed:
Jan. 08, 1982
Fumikazu Itoh, Fujisawa, JP;
Yasuhiro Fujita, Yokosuka, JP;
Takashi Kobayashi, Fujisawa, JP;
Takao Mifune, Ichikawa, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A coil winding and inserting machine suitable for winding stator coils of 3-phase multipolar motors. The machine has a plurality of independently liftable tooling blades and auxiliary plates. Three winding forms are formed simultaneously or in a predetermined sequence, each being constituted by two tooling blades and one selectively lifted auxiliary plate. Three flyers corresponding to the three winding forms are rotated around these winding forms to form coils of the first pole of respective phases. Then, the flyers make a 180.degree. indexing rotation and coils of the second pole are formed in the same manner as the coils of the first pole. After the winding of all coils, the coils are inserted into the stator core together with the wedges. Accordingly, it is possible to form the coils of u, v and w phases without cutting wires between two poles of respective phases, while ensuring an equal circumferential length of coils of all phases.