Patent ID: 7812487

Claim:
A controller for a direct current brushless motor ( 1 ), comprising a control board ( 3 ) having a top portion and a bottom portion; a housing ( 4 ) having an inner side wall, an outer side wall, a top, and a bottom inner wall; a plurality of juts ( 6 ) for supporting said control board ( 3 ); a plurality of cooling fins ( 5 ); an integrated power module chip ( 7 ) for driving the motor; and an insulating heat sink ( 8 ); wherein said outer sidewall is substantially circular in shape; said control board is rectangular in shape; said inner side wall is substantially rectangular in shape having four corners; said juts ( 6 ) protrude one from each corner of the inner side wall; said control board ( 3 ) is disposed in said housing ( 4 ) and rests on said juts ( 6 ), said cooling fins ( 5 ) are disposed at the bottom of said housing ( 4 ), said integrated power module chip ( 7 ) is disposed at said bottom portion of said control board, and said insulating heat sink ( 8 ) is disposed between said integrated power module chip ( 7 ) and said inner bottom wall of said housing ( 4 ).