Electrical generator or motor structure – Dynamoelectric – Rotary
Reexamination Certificate
2006-02-07
2006-02-07
Lam, Thanh (Department: 2834)
Electrical generator or motor structure
Dynamoelectric
Rotary
C310S194000, C318S254100
Reexamination Certificate
active
06995490
ABSTRACT:
A stator and armature assembly12is provided for a permanent magnet DC motor. The assembly includes an armature13having a lamination core14and windings15, and a stator structure16associated with the armature. The armature is constructed and arranged to rotate with respect to the stator structure. The stator structure includes at least one permanent magnet22providing a certain flux, and at least one wound core structure17having a core18and a coil19wound about the core so as to define an alternate pole with respect to the permanent magnet. When current to the coil is controlled, flux of the stator structure16can be increased or decreased relative to the certain flux. In this way a motor can operate at different speeds.
REFERENCES:
patent: 5389862 (1995-02-01), Tominaga
patent: 6342746 (2002-01-01), Flynn
patent: 6563248 (2003-05-01), Fujita
patent: 6838848 (2005-01-01), Shindo
Dragoi Corneliu
Kershaw Peter A.
Lakerdas Andrew
Makaran John E.
Simofi-Ilyes Attila
Lam Thanh
Siemens VDO Automotive Inc.
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