Electricity: magnetically operated switches – magnets – and electr – Electromagnetically actuated switches – With housing or support means
Patent
1989-02-22
1990-07-10
Picard, Leo P.
Electricity: magnetically operated switches, magnets, and electr
Electromagnetically actuated switches
With housing or support means
200293, H01H 902
Patent
active
049409573
ABSTRACT:
An electromagnetic circuit breaker uses opposed half shell cases which cooperate to enclose the breaker structure. The structure of the breaker is supported on a frame member which, in turn, is fixed to the housing. The electromagnetic coil for the breaker is supported on a platform extension of the frame wound on a bobbin spool, one flange of which rests against the platform. Passing through the core of the spool and the coil is a non-magnetic tubular core holder containing a magnetic core which is at least spring, and usually gravity, biased toward one end of the tube away from the pole piece closing the other end of the tube. The end of the tube closed by the pole piece is terminated in a radial flange which rests atop the other flange of the coil bobbin. Some part of the flange is, in turn, engaged in the assembly of the housing by shoulders which press the flange toward the bobbin and, in turn, against the supporting platform of the frame, thereby holding the whole structure in place. In preferred embodiments the flange is provided with diametrically opposed extensions which are engaged in slots or pockets on the respective casing sidewalls which function to apply the clamping force.
REFERENCES:
patent: 4087772 (1978-05-01), Grenier
Donovan Lincoln
Heinemann Electric Company
Picard Leo P.
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