Electricity: circuit makers and breakers – Electric switch details – Cases and bases
Patent
1989-11-14
1991-08-20
Scott, J. R.
Electricity: circuit makers and breakers
Electric switch details
Cases and bases
361212, H01H 902
Patent
active
050417070
ABSTRACT:
A switch assembly (60) shielded against electromagnetic interference in accordance with the present invention includes a first housing (15) defining a volume within which a switch (16) is disposed and a first opening not providing shielding against electromagnetic interference penetrating into the volume (39) through which at least two electrical conductors (12) pass which are electrically connected to the switch, the first housing providing shielding against electromagnetic interference penetrating into the volume through the wall; a cable (44) shielded against electromagnetic interference, attached to a cover plate (65) with the at least two conductors being contained within the cable, the cover plate shielding against penetration of electromagnetic interference; a second housing (62) deposed outside of, contacting and containing the first housing, the second housing defining a second opening (64) not providing shielding against penetration of electromagnetic interference into the second housing; and the cover plate being joined to the second opening by an attachment (68) which shields against penetration of electromagnetic interference into the second housing.
REFERENCES:
patent: 3566064 (1969-06-01), Neillis
patent: 3987263 (1976-10-01), Ogasawara
patent: 4185176 (1980-01-01), Matsuo
patent: 4336529 (1982-06-01), Buan
patent: 4507627 (1985-03-01), Ito et al.
patent: 4567318 (1986-01-01), Shu
patent: 4692576 (1987-09-01), Frede
patent: 4737597 (1988-04-01), Tomiya et al.
Scott J. R.
Sundstrand Corporation
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