Electricity: magnetically operated switches – magnets – and electr – Electromagnetically actuated switches – Multiple contact type
Patent
1979-04-30
1981-03-31
Broome, Harold
Electricity: magnetically operated switches, magnets, and electr
Electromagnetically actuated switches
Multiple contact type
335133, 335136, H01H 5054
Patent
active
042596521
ABSTRACT:
A relay is provided for reversing the direction of current to an electric motor and providing for dynamic breaking when power is disconnected. The contacts are cantilevered from a pivoting support driven electromagnetically. Mounted inwardly of the cantilevered contacts, are a pair of cantilevered springs. Each cantilevered spring is adjacent to, and associated with, a respective cantilevered contact. When the relay is energized, displacing one of the cantilevered contacts, a respective cantilevered spring is deflected against the cantilevered contact to provide a force additional to the force induced by the cantilevered contact support. Additionally, a fulcrum is provided for supporting pivotal movement of an armature supporting the cantilevered contacts, and which is combined with the magnetic flux path of the relay.
REFERENCES:
patent: 2446299 (1948-08-01), Nelsen
patent: 2564246 (1951-08-01), Bourne
patent: 2587948 (1952-03-01), Woolf
patent: 3001049 (1961-09-01), Didier
patent: 3155790 (1964-11-01), Lemonnier
patent: 3305718 (1967-02-01), Waldron
patent: 3321722 (1967-05-01), Cohen
patent: 3824511 (1974-07-01), Aidn et al.
Broome Harold
DeClercq James P.
Eltra Corporation
Rosenblatt Joel I.
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