Electricity: magnetically operated switches – magnets – and electr – Electromagnetically actuated switches – Polarity-responsive
Patent
1989-09-22
1991-06-18
Picard, Leo P.
Electricity: magnetically operated switches, magnets, and electr
Electromagnetically actuated switches
Polarity-responsive
335 78, 335128, H01H 5122
Patent
active
050252372
ABSTRACT:
Each of first and second contact blocks includes a substantially rectangular insulating member, a pair of stationary contact members projecting inward from the insulating member and supported with a predetermined interval therebetween, a movable contact member arranged between the pair of stationary contact members and supported by the insulating member, and first, second, and third terminals for electrically extracting the pair of stationary contact members and the movable contact member, respectively, and projecting from a base portion of the insulating member with predetermined intervals therebetween. An electromagnet includes a movable member for commonly acting on the movable contact members of the first and second contact blocks to move each movable contact member toward one of the pair of stationary contact members of each of the first and second contact blocks. A shielding block member with a substantially H-shaped section includes two storage spaces for storing the first and second contact blocks, respectively, a support portion for mounting the electromagnet, and a predetermined number of notched portions for guiding the first, second, and third terminals of each of the first and second contact blocks. At least a surface of the shielding block member has conductivity. A shielding case shields at least an edge of an opening portion of the shielding block member.
REFERENCES:
patent: 4879536 (1989-11-01), Taguchi et al.
Gono Yoshitaka
Iwanaga Kenji
Oda Toshikazu
Yamazaki Syoji
Anritsu Corporation
Donovan Lincoln
Picard Leo P.
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