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Patent Searching and Data


Title:
ARCUATE COIL WINDING FOR EDM
Document Type and Number:
WIPO Patent Application WO/2008/137398
Kind Code:
A3
Abstract:
An axial gap EDM deploys as a stator coils a series of two parallel serpentine windings that each circumscribe an arc segment of a circle. Each arc segment that forms the stator winding assembly is powered as a separate phase. The two winding are readily formed by shaping one or more wire segment. Preferably the parallel winding are arranged to overlap with a half period rotational offset such that the radial directed serpentine segments of that are disposed above and below the stator disk are interlaced when viewed in projection through the disk. In one embodiment, each series of serpentine winding are separated by a gap so that they can be inserted on the stator disk from the edge. A separate rotor disk is adjacent each side of this stator disk. In another embodiment, each series of serpentine winding are separated by a gap, so they can be inserted to surround a single rotor disk which has two series of magnets disposed on opposite sides.

Inventors:
HALSTEAD RICHARD (US)
Application Number:
PCT/US2008/061843
Publication Date:
October 08, 2015
Filing Date:
April 29, 2008
Export Citation:
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Assignee:
EMPIRE MAGNETICS INC (US)
HALSTEAD RICHARD (US)
International Classes:
H02K3/46; H02K3/28
Domestic Patent References:
WO2005089327A22005-09-29
Foreign References:
US6348751B12002-02-19
US5982069A1999-11-09
US20060028093A12006-02-09
US4922145A1990-05-01
Other References:
See also references of EP 2201825A4
Attorney, Agent or Firm:
SHERMAN, Edward S. (3554 Round Barn Blvd.Santa Rosa, California, US)
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