Method of manufacturing cup-shaped coil assembly of electric mot

Details Method of manufacturing cup-shaped coil assembly of electric mot Method of manufacturing cup-shaped coil assembly of electric mot

1978-05-16

1980-05-06

Hall, Carl E.

Metal working

Method of mechanical manufacture

Electrical device making

29605, 72 62, 72 75, 72120, 310266, H02K 1502

Patent

active

042009715

ABSTRACT:
A method of manufacturing a cup-shaped coil assembly is described which employs a coil bobbin of a special design. The bobbin comprises a cylindrical member, a disc connected with one end of the cylindrical member to close it, a cap member detachably fitted into an opening in the other end of the cylindrical member, and a shaft disposed in alignment with the axis of the cylindrical member and having its one end attached to the disc and its other end slidably extending through the cap member. The method comprises the steps of assembling a coil bobbin in the manner mentioned above, and forming a coil around the bobbin by a skewed winding of wire, pressing the cap member into the cylindrical member, diametrically enlarging an opening formed at one end of the coil, and removing the cap member from the coil formed.

REFERENCES:
patent: 2513410 (1950-07-01), Haydon
patent: 2759116 (1956-08-01), Glass
patent: 3971124 (1976-07-01), Sasaki et al.

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