Electricity: magnetically operated switches – magnets – and electr – Electromagnetically actuated switches – Multiple contact type
Patent
1981-01-30
1983-02-01
Broome, Harold
Electricity: magnetically operated switches, magnets, and electr
Electromagnetically actuated switches
Multiple contact type
29602R, H01H 5002
Patent
active
043718558
ABSTRACT:
A contactor assembly comprises an arc chute having side walls, an intermediate wall and legs extending from the latter. A stationary electromagnet assembly is supported by a metallic support member, i.e. base plate, whose sidearms are secured to the bottom of the legs. Pole shader rings are nested in the arms of the magnet assembly. Portions of the pole shaders extending transversely from the magnet legs are clamped against platforms on the sidewalls of the arc chute by the spring force exerted by the base plate. An armature is secured to a moveable contact carrier that carries a spring biased contact bridge. The wear allowance of the contact carrier can be readily controlled by machining the platforms to the correct height. This is accomplished prior to installation of the electromagnet assembly by exerting a force directly against the contact bridges to close them against the stationary contacts. The platforms are then machined to a predetermined depth from the pole face of the armature. This minimizes tolerance buildups that adversely modify the distance of movement of the moveable contact carrier.
REFERENCES:
patent: 2513695 (1950-07-01), Van Valkenburg
patent: 2889426 (1959-06-01), Heller et al.
patent: 2943170 (1960-06-01), Vradenburgh
patent: 3099730 (1963-07-01), Tateishi
patent: 3331039 (1967-07-01), McGary
patent: 3334319 (1967-08-01), Hermann et al.
patent: 3806849 (1974-04-01), Hughes
patent: 3873952 (1975-03-01), Kondo et al.
Bernkopf Walter C.
Broome Harold
General Electric Company
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