Electrical generator or motor structure – Dynamoelectric – Rotary
Reexamination Certificate
1999-04-06
2002-09-03
Tamai, Karl (Department: 2834)
Electrical generator or motor structure
Dynamoelectric
Rotary
C310S216055, C310S156350, C310S156370
Reexamination Certificate
active
06445105
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention relates generally to axial flux machines.
Axial flux machines, sometimes referred to as disk, axial-gap, or pancake motors, are presently used in appliances that have low to modest power requirements such as video cassette recorders and blenders, for example. Theoretically, high pole numbers can be useful for motor drive cost reduction, but prior motor designs such as those used in laminated claw pole motors and radial flux electronically commutated motors have been complex and expensive.
Thus, there is a particular need for a simple fabrication process for providing an axial flux motor having increased power density and efficiency.
BRIEF SUMMARY OF THE INVENTION
Briefly, in accordance with one embodiment of the present invention, an axial flux machine includes a rotatable shaft; at least one rotor disk coupled to the rotatable shaft; at least one permanent magnet supported by the at least one rotor disk; at least one stator extension positioned in parallel with the at least one rotor disk; at least two molded iron pole elements attached to the at least one stator extension and facing the at least one permanent magnet; and at least two electrical coils, each wrapped around a respective one of the at least two molded iron pole elements.
REFERENCES:
patent: 1566693 (1925-12-01), Pletscher
patent: 1897184 (1933-02-01), Zopp
patent: 2872604 (1959-02-01), Speth
patent: 2873395 (1959-02-01), Kober
patent: 4187441 (1980-02-01), Oney
patent: 4363988 (1982-12-01), Kliman
patent: 4392072 (1983-07-01), Rosenberry
patent: 4429263 (1984-01-01), Muller
patent: 4578610 (1986-03-01), Kliman et al.
patent: 4641421 (1987-02-01), Stanley
patent: 4719377 (1988-01-01), Horie et al.
patent: 4866321 (1989-09-01), Blanchard et al.
patent: 4916346 (1990-04-01), Kliman
patent: 4933584 (1990-06-01), Harms et al.
patent: 4947065 (1990-08-01), Ward et al.
patent: 5105115 (1992-04-01), Shinryo et al.
patent: 5168187 (1992-12-01), Baer et al.
patent: 5177392 (1993-01-01), Scott
patent: 5397953 (1995-03-01), Cho
patent: 5773908 (1998-06-01), Stephens et al.
patent: 5801473 (1998-09-01), Helwig
patent: 5804898 (1998-09-01), Kawai
patent: 5890277 (1999-04-01), Kliman
patent: 5909072 (1999-06-01), Muller
patent: 5967763 (1999-10-01), Horng
patent: 5982058 (1999-11-01), Bustamante et al.
patent: 5982070 (1999-11-01), Caamano
patent: 6034465 (2000-03-01), McKee et al.
patent: 6057621 (2000-05-01), Suzuki et al.
J. F. Gieras, et al, “Synchronous Motors of Special Construction” Permanent Magnet Motor Technology Design and Applications, University of Cape Town, Rondebosch, South Africa, Chapter 7, pp. 242-249.
JR Hendershot, Jr, et al, “Design of Brushless Permanent-Magnet Motors”, 1994, pp. 2-10-2-12.
GB Kliman, “Permanent Magnet AC Disc Motor Electric Vehicle Drive”, SAE Technical Paper Series, International Congress & Exposition, 1983, pp. 1-9.
Jansen Patrick Lee
Kliman Gerald Burt
Stephens Charles Michael
Agosti Ann M.
Breedlove Jill M.
General Electric Company
Tamai Karl
LandOfFree
Axial flux machine and method of fabrication does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Axial flux machine and method of fabrication, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Axial flux machine and method of fabrication will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2855152