Inductor devices – With permanent magnet
Reexamination Certificate
2011-02-15
2011-02-15
Mai, Anh T (Department: 2832)
Inductor devices
With permanent magnet
C336S175000, C336S212000
Reexamination Certificate
active
07889040
ABSTRACT:
A DC inductor comprising a core structure (11) comprising one or more magnetic gaps (12, 13), a coil (14) wound on the core structure (11), at least one permanent magnet (15) positioned in the core structure, the magnetization of the permanent magnet (15) opposing the magnetization producible by the coil (14). The DC inductor further comprises at least one magnetic slab (16) inserted to the core structure which forms the one or more magnetic gaps (12, 13), at least one supporting member (17) made of magnetic material extending from the core structure inside the core structure and supporting the at least one permanent magnet (15), and that the at least one supporting member (17) is arranged to form a magnetic path for the at least one permanent magnet.
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European Search Report.
Hautakorpi Esa
Pieteris Paulius
Viitanen Tero
ABB Oy
Buchanan & Ingersoll & Rooney PC
Mai Anh T
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