Method of forming a coupling disc for an electromagnetic couplin

Details Method of forming a coupling disc for an electromagnetic couplin Method of forming a coupling disc for an electromagnetic couplin

1986-01-13

1987-08-11

Hall, Carl E.

Metal working

Method of mechanical manufacture

Electrical device making

219121LD, 219121LN, 219121LM, 188161, 192 84PM, 228168, H01F 4102

Patent

active

046852026

ABSTRACT:
A method of forming non-magnetic barriers in the coupling disc (e.g., the armature or rotor) of an electromagnetic coupling such as a clutch or brake. The method is carried out by moving the disc relative to a laser beam which cuts a slot through the disc. In one embodiment, the slot is filled throughout its entire length by non-magnetic material, the filling being effected by continuously advancing a non-magnetic wire toward the laser beam to cause the wire to be melted by the beam and to flow into the newly formed slot. In another embodiment, the wire is advanced intermittently to form short non-magnetic bridges beween relatively long slots.

REFERENCES:
patent: 3332145 (1967-07-01), Klinkenberg
patent: 4104589 (1978-08-01), Baker et al.
patent: 4187939 (1980-02-01), Silvestrini et al.
patent: 4203021 (1980-05-01), Anderl et al.

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