Transformer assembly with improved retainer and insulator

Details Transformer assembly with improved retainer and insulator Transformer assembly with improved retainer and insulator

1992-09-14

1994-04-26

Picard, Leo P.

Inductor devices

Interlinked coils or windings

Coil surrounding linear conductor

336229, 336198, H01F 1502

Patent

active

053070437

ABSTRACT:
For use in a trip unit, a transformer assembly is provided in a compact and cost effective form. The assembly includes a toroidal transformer between a pair of busses, and plastic retainers around a conductor which connects the busses. Each of the plastic retainers are molded as a plastic part which features: a flat portion separating the transformer axially from the adjacent bus, a tubular section attached to the flat portion which protrudes through the center of the transformer and serves to separate it radially from the bus, and a set of ribs protruding from the tubular, flat portions which serve to slightly penetrate the insulation material in the center of the transformer and grip the transformer to prevent it from rotating, and a lip protruding from the flat portion which causes the retainer to stop rotational motion relative to the bus.

REFERENCES:
patent: 2920297 (1960-01-01), Spicer
patent: 3921113 (1975-11-01), Schiemann
patent: 4054856 (1977-10-01), Linscott, Jr.
patent: 4571569 (1986-02-01), Schart
patent: 4623865 (1986-11-01), Kiesel et al.
patent: 4754250 (1988-06-01), Duin
patent: 4763072 (1988-08-01), Katoh et al.
patent: 4833436 (1989-05-01), Martin et al.
patent: 4868532 (1989-09-01), Enrenhalt et al.
patent: 4970476 (1990-11-01), Ketagawa
patent: 4972169 (1990-11-01), Fujioka

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