Electrical generator or motor structure – Dynamoelectric – Rotary
Reexamination Certificate
2009-06-16
2010-12-21
Hanh, Nguyen N (Department: 2834)
Electrical generator or motor structure
Dynamoelectric
Rotary
Reexamination Certificate
active
07855486
ABSTRACT:
A claw pole generator is basically provided with a circularly arranged permanent magnet and an internal stationary unit with a yoke and a coil. The yoke includes a first laminated yoke and a second laminated yoke. The first and second laminated yokes include a disc-shaped connecting portion arranged on one side of the coil and a plurality of outer circumferential yoke portions that are arranged between the coil and the permanent magnet with circumferential spaces in-between. Each of the outer circumferential yoke portions has a plurality of outer circumferential yoke layers laminated overlying each other along a radial direction with respect to the axial centerline of the coil. An outermost one of the outer circumferential yoke layers that is closest to the permanent magnet with a longer axial length than an innermost one of the outer circumferential yoke layers.
REFERENCES:
patent: 5962938 (1999-10-01), Bobay et al.
patent: 6891305 (2005-05-01), Park
patent: 32-8026 (1932-07-01), None
patent: 03-117357 (1991-12-01), None
patent: 2004-229403 (2004-08-01), None
patent: 3740555 (2005-11-01), None
patent: 2009-55750 (2009-03-01), None
Global IP Counselors, LLP
Hanh Nguyen N
Shimano Inc.
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