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(12) PATENT APPLICATION PUBLICATION
(19) INDIA (21) APPLICATION No:
2175/MAS/1997A
(22) Date of filing of Application:01/10/1997 (43) Publication Date: 09/06/2006
(54) Title of the invention:
REDUCED NOISE RELUCTANCE
MACHINE
(51)International classification:HO2 K1/14,
HO2 K3/487, K3/50
(31) Priority Document No.08/725, 007
(32) Priority Date:01/10/1996
(33) Name of priority country:USA
(87) WIPO No. :PCT/US97/16571
(61) Patent of addition to
Application No. :
Filed on:
(62) Divisional to
Applcation No.:
Filed on:
(71) Name of Applicant
EMERSON ELECTRIC CO,
Address of Applicant:
8000 WEST FLORISSANT AVENUE, ST,
LOUIS, MISSOURI 63136, USA.,
U.S.A.
(72) Name of the Inventor(s):
MICHAELS PAUL., G,
NEWBERG BARRY .M.,
HUGGUNS MARSHALL J.,
KIEFFER VERSON .E.,
(57)Abstract
The present invention relates to a reduced noise reluctance machine comprising a stator defining a plurality of
inwardly projecting stator poles, wherein the projecting stator poles defme inter-pole regions between the stator poles
and a central bore, and where each stator pole terminates in a region defining a concave surface, where the concave
surface has a given radius of curvature; at least one phase winding having a winding coil that is wound about at least
one of the stator poles, where ponions of the winding coil are positioned in at least one inter-polar region, and where
the portion of the winding coil has an outer surface facing the central bore; and a contoured top-stick positioned
within the at least one inter-polar region on the outer surface of the portion of the winding coil, wherein the contoured
top-stick has an outer concave surface where the radius of curvature of the top-stick's outer surface is substantially the
same as the given radius of curvature.
The Patent Office Journal 09/06/2006 10827