Rotary armature and method of forming armature coil

Details Rotary armature and method of forming armature coil Rotary armature and method of forming armature coil

1993-12-17

1996-12-24

Stephan, Steven L.

Electrical generator or motor structure

Dynamoelectric

Rotary

310208, 310 43, H02K 104, H02K 304, H02K 1700

Patent

active

055876196

ABSTRACT:
A central conductor portion of a coil is formed with a potbelly-shaped cross-sectional form and a flat-shaped face of an insulated coating film of the potbelly-shaped cross-sectional form coil is made thinner than an arc-shaped face of the insulated coating film of the potbelly-shaped cross-sectional form coil. An insulated coating wire having a circular-shaped cross-sectional form is formed to a coil having a potbelly-shaped cross-sectional form by rolling process at a normal temperature. A dead space in a slot is lessened and the magnetic resistance of a magnetic core is decreased, thereby a small size and a high output electric motor can be obtained. A method of forming a rotary armature coil having a high space factor in the slot can be attained.

REFERENCES:
patent: 4602180 (1986-07-01), Olson
patent: 4818909 (1989-04-01), Balke
patent: 4876473 (1989-10-01), Tanaka et al.
patent: 5045742 (1991-09-01), Armstrong et al.
patent: 5266858 (1993-11-01), Ohmi et al.

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