Patent ID: 9257229
Filing Date: 2016-02-09
CPC Classification: H01F,Y10T

Claim Text:
1. A coil for a transformer comprising: first and second coil segments, each coil segment being defined by successive layers of wound conductor sheeting, the coil segments being electrically connected together and being adjacent, defining a space there-between, a plurality of hollow cooling duct pairs disposed between certain of the layers in each of the first and second coil segments such that, for each cooling duct pair, an end of a cooling duct disposed in the first coil segment is adjacent to an end of a cooling duct disposed in the second coil segment, with the ends being disposed in the space, and a hollow connector connecting the adjacent ends of each pair of cooling ducts so as to define a continuous hollow cooling duct extending axially from an end of the first coil segment to an end of the second coil segment.