Electromagnetic coupling apparatus

Details Electromagnetic coupling apparatus Electromagnetic coupling apparatus

1990-03-27

1994-04-26

Picard, Leo P.

Electricity: magnetically operated switches, magnets, and electr

Magnets and electromagnets

Magnet structure or material

336192, 336107, 192 84C, H01F 2704, H01F 1510

Patent

active

053070380

ABSTRACT:
In an electromagnetic coupling apparatus, an excitation coil constituted by a plurality of turns of a winding member is covered with a resin coil bobbin. The coil bobbin can be divided into at least two members and is formed into a hollow annular shape. The divided mating surfaces of the members constituting the coil bobbin are joined to each other by ultrasonic welding.

REFERENCES:
patent: 4119184 (1978-10-01), Mower et al.
patent: 4428470 (1984-01-01), Bennett
patent: 4432446 (1984-02-01), Okano
patent: 4935713 (1990-06-01), Bekheet

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