Inductor devices – Winding formed of plural coils
Reexamination Certificate
2011-03-29
2011-03-29
Mai, Anh T (Department: 2832)
Inductor devices
Winding formed of plural coils
C336S221000, C336S192000
Reexamination Certificate
active
07915988
ABSTRACT:
The present invention relates to a field coil assembly of an electromagnetic clutch for a compressor. The present invention comprises a core210, and a coil240installed to the core210and formed by winding a unit wire250. At this time, the unit wire250wound on the coil240is made of aluminum, and an area ratio R of an inner sectional area M of the core210to a cross-sectional area of the unit wire250is 400 to 640. According to the present invention as above, since the unit wire250used for the coil240is made of aluminum with a small specific weight and low price rather than copper, the weight of the field coil assembly200is decreased to improve fuel efficiency of a vehicle and decrease a production cost of the field coil assembly200.
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Chung Suk-jae
Gong Seong-Gyu
Kim Deok-Soo
Oh Sung-Taeg
Birch & Stewart Kolasch & Birch, LLP
Halla Climate Control Corp.
Mai Anh T
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