H - Electricity – 02 – K
Patent
H - Electricity
02
K
18/73
H02K 15/12 (2006.01) H01F 5/06 (2006.01) H01F 41/00 (2006.01) H02K 3/32 (2006.01)
Patent
CA 1050716
ABSTRACT OF THE DISCLOSURE An excitation coil for a shaded pole electric motor is produced by applying a coil winding to a thin walled coil former having a plurality of projections, and placing the assembled coil winding and coil former in an injection mold having a plurality of pins extending from the walls thereof, the plurality of pins corresponding to the plurality of projections on the coil former. The assembled coil winding and coil former are supported within the injection mold by engaging the pins extending from the walls of the injection mold with the corresponding projections on the coil former, with the pins providing the sole support for the assembled coil winding and coil former. A thermoplastics synthetic material having a solid filler is injected into the mold, the filler having a higher melting point than the thermo- plastics material, and the thermoplastics synthetic material is allowed to become partially set but still flowable. The pins are then retracted into the walls of the injection mold, thereby allowing the partially set thermoplastics synthetic material to flow into spaces left by the retraction of the pins. The thermo- plastics synthetic material is allowed to set completely, and the formed excitation coil is removed from the injection mold. The coil has a dampness-resisting homogeneous envelope is non- self-igniting, the thermoplastics synthetic material and solid filler dissipating heat from a short circuit occurring in the interior of the coil by allowing gases generated within the coil to escape through the filler lattice without permitting oxygen to enter the coil.
217277
Hanning Elektro-Werke Robert Hanning
Na
LandOfFree
Method of producing an excitation coil for shaded pole... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method of producing an excitation coil for shaded pole..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of producing an excitation coil for shaded pole... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-139189