H - Electricity – 02 – K
Patent
H - Electricity
02
K
310/107
H02K 3/46 (2006.01)
Patent
CA 1182161
COIL UNIT AND COIL FORM FOR ELECTRICAL MACHINES ABSTRACT OF THE DISCLOSURE A coil unit for use in brushless and ironless armature motors which includes the form upon which the same is wound and providing, in its complete form, a self supporting coil unit which may be inserted into the laminations or soft iron shell of a motor. The complete coil unit includes a plurality of individual coils which are arranged in skewed, longitudinal, side-by-side relation to one another and the individual windings of the coils are positioned on both the inner and outer surfaces of the coil form, the inner and outer windings pairs being diametrically opposed to one another to thereby provide a pair of diametrically opposed coil portions which are connected in series aiding fashion. The coil form is a thin, longitudinally extending, tubular member of a non-magnetic material providing coil winding and locating cutouts or serrations on the longitudinal ends thereof. The cutouts provide a winding surface for the turns of the coils, the surface being angularly offset to a plane arranged radially to the axis of the coil form, and a positioning surface being angularly offset to an axially extending plane such that the last turn of one winding may lie in side-by-side relation to that of the next winding.
407872
Borden Ladner Gervais Llp
Hendricks Howard F.
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