Electricity: circuit makers and breakers – Special application – Liquid or moisture responsive
Patent
1977-10-31
1979-02-06
Ross, Herbert F.
Electricity: circuit makers and breakers
Special application
Liquid or moisture responsive
200 18, 200 70, 200153G, 200DIG42, 74 97, H01H 2104
Patent
active
041386027
ABSTRACT:
An over-center toggle switch suitable for use in an electrical distribution transformer as a series-multiple switch or as a no-load tap changer switch. The over-center toggle switch imparts snap action rotation to a movable contact assembly and, further, cams the movable contact assembly immediately prior to the snap action movement thereby causing an initial rotation of the movable contact assembly. In multiple phase distribution transformers, individual over-center toggle switches are associated with each phase and are interconnected by suitable connecting means to an operating mechanism whereby rotation of the operating mechanism through a predetermined angle causes independent operation of each over-center toggle switch which thereby imparts camming and snap action rotation to the movable contact assemblies in each phase of the distribution transformer.
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Lackey D. R.
Ross Herbert F.
Westinghouse Electric Corp.
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