Title:
MACHINE WITH CUP-SHAPED ARMATURE AND AIR GAP
Document Type and Number:
WIPO Patent Application WO2000038297
Kind Code:
A9
Abstract:
An electro-mechanical machine having a field producing assembly (34, 34', 34a, 34b) providing a cup-shaped air gap (133) which is circumferentially disposed about an axis of rotation. The field assembly (34, 34', 34a, 34b) produces a circumferential distribution of magnetic flux in the cup-shaped air gap (133) having n periodic extremes of flux density (34, 34', 34a, 34b) about the axis. A cup-shaped electrical assembly (128) or armature is disposed in the air gap (133) and the armature (128) and field assembly (34, 34', 34a, 34b) are relatively rotatable. The armature (128) has a circular array of C non-overlapping coils (131) on each of its inner and outer faces with the coils (131) on one face being angularly offset from the coils (131) on the other face. Moreover, since the air gap (133) and coils (131) are cup-shaped, it is possible to achieve, for a machine of given diameter and form factor, a horsepower and torque which was previously possible only with substantially larger disk-type motors. That is because the total volume of the air gap (133) and coils (131) correspond to those of a much larger diameter disk-type motor.
Inventors:
DUNN STANLEY E (US)
Application Number:
PCT/US1999/030785
Publication Date:
November 30, 2000
Filing Date:
December 22, 1999
Export Citation:
Assignee:
RUSH DAVID H (US)
DUNN STANLEY E (US)
DUNN STANLEY E (US)
International Classes:
H02K1/30; H02K3/04; H02K3/47; H02K23/26; H02K23/54; H02K23/58; H02K3/26; (IPC1-7): H02K1/22; H02K1/12; H02K3/00; H02K3/04; H02K3/46; H02K16/00
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