Electrical generator or motor structure – Dynamoelectric – Rotary
Reexamination Certificate
2001-08-22
2004-04-20
Lam, Thanh (Department: 2834)
Electrical generator or motor structure
Dynamoelectric
Rotary
C310S254100
Reexamination Certificate
active
06724117
ABSTRACT:
BACKGROUND OF THE INVENTION
The invention relates to the winding carrying part of electronically switched reluctance machines with separate electromagnets. In the course of the specification, we shall call this part “field part” or “stator”. The reluctance machines are sometimes called SR (switched reluctance) machines. Such machines are known by the prior art from the international patent applications WO 96/09683 and WO 98/23024. The first document knows a reluctance machine which has no stator but two independent opposed rotors, the conventional stator becoming the outer rotor because of a special bearing. This rotor (field rotor), similar to a stator, can also be realized according to the teaching of this invention.
The invention offers technological solutions for the realization of the stator of common machines or of the field rotor of the double rotor machines with a particular structure. For other parts of these machines (rotor, bearing), sufficient methods of production are known by the prior art. Unlike conventional motors (see FIG.
1
), the stator has four independent yokes
11
which are equipped with respectively two cantilever windings each which are to be produced separately.
However, these machines mentioned by the prior art, which are basically very simple with electromagnets which are to be set in separately have to be realized with appropriate manufacturing techniques in order to produce mechanically, for example, the numerous electric connections of the windings or to guarantee the observance of a constant air gap as small as possible.
REFERENCES:
patent: 4895536 (1990-01-01), Gingerich et al.
patent: 5365137 (1994-11-01), Richardson et al.
patent: 5866965 (1999-02-01), Baronosky et al.
patent: 6262510 (2001-07-01), Lungu
patent: 35 32 818 (1987-03-01), None
patent: 42 33 679 (1993-12-01), None
patent: 44 01 847 (1995-07-01), None
patent: 0 289 292 (1988-11-01), None
patent: 2 644 641 (1989-12-01), None
patent: WO 90/11641 (1990-10-01), None
patent: WO 96/09683 (1996-03-01), None
patent: PCT/RO00/00010 (2000-04-01), None
Kelly Bauersfeld Lowry & Kelley LLP
Lam Thanh
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