Method for encapsulating field windings of rotary electric machi

Plastic and nonmetallic article shaping or treating: processes – Mechanical shaping or molding to form or reform shaped article – To produce composite – plural part or multilayered article

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26427219, 2642722, B29C 4501, B29C 7070

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active

059483385

ABSTRACT:
It is generally known that the most common reason for replacing rotary electric machines is failure of field windings. Vibrations and primary overheating of field windings is the main reason for motor and generator repair. Consequently field windings have been fan cooled, externally ventilated, and totally enclosed. To solve this failure problem stators have been completely encapsulated, drip coated, and entirely coated. But all of these procedures are subject to certain disadvantages. The method and means herein overcome such disadvantages. Means are provided for embedding in a solid material field windings of stators of rotary electric machines in order to insulate and cool electric machines in which the stators are employed.

REFERENCES:
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patent: 4471247 (1984-09-01), Cotton
patent: 4845837 (1989-07-01), Lloyd
patent: 5040285 (1991-08-01), Williams et al.
patent: 5115556 (1992-05-01), Gavrilidis et al.
patent: 5149483 (1992-09-01), Okey et al.
patent: 5634258 (1997-06-01), Onodera et al.

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