Metal working – Method of mechanical manufacture – Electrical device making
Patent
1986-10-06
1988-04-05
Eley, Timothy V.
Metal working
Method of mechanical manufacture
Electrical device making
29607, 156 53, 156185, H02K 340
Patent
active
047349760
ABSTRACT:
A method of insulating a field coil of an electric traction motor, comprising the steps of encapsulating the coil in flexible ground insulation, temporarily mounting the insulated coil on a field pole piece, wrapping heat shrinkale material around the perimeter of the insulated coil, said material being so composed, oriented, and applied as to shrink irreversibly, when subsequently heated, in a direction tending to constrict the whole outside perimeter of the insulated coil, attaching the base of the pole piece to a concave surface of the magnet frame of the motor in a manner that compactly clamps the coil between the frame and an overhanging distal end of the pole piece, heating the perimeter wrap so that it shrinks appreciably and tightly binds the underlying ground insulation, thereby counteracting any tendency of the ground insulation to become slack on the outside of the coil when the coil was clamped in place, and filling any remaining voids inside the ground insulation with varnish or resin in a conventional vacuum impregnation process.
REFERENCES:
patent: 2195233 (1940-03-01), Boyer
patent: 3033727 (1962-05-01), Cram et al.
patent: 3297970 (1967-01-01), Jones
patent: 3600801 (1971-08-01), Larsen et al.
patent: 4400226 (1983-08-01), Horrigan
Eley Timothy V.
General Electric Company
Richardson, Jr. Albert S.
LandOfFree
Method of making a void-free insulated electromagnetic coil 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 making a void-free insulated electromagnetic coil, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of making a void-free insulated electromagnetic coil will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2226503