Elastic-spring drive for the movable contact of an electric grou

Details Elastic-spring drive for the movable contact of an electric grou Elastic-spring drive for the movable contact of an electric grou

1982-08-26

1984-05-29

Marcus, Stephen

Electricity: circuit makers and breakers

Special application

Liquid or moisture responsive

200153G, 74 97, H01H 2142

Patent

active

044517165

ABSTRACT:
An elastic-spring drive for the movable contact of an electric grounding or disconnect switch is disclosed. The movable contact is coupled by at least one lever to a drive shaft. A drive lever is rigidly connected to the drive shaft and a cocking lever is rotatably coupled to the drive shaft. An elastic compression spring is supported flexibly at both ends between the drive lever and the cocking lever, one end of the spring being connected to the free end of the drive lever and the other end to the free end of the cocking lever. This arrangement enables the drive lever to be held stationary during cocking of the spring. The spring is slowly cocked by the motion of the cocking lever until it is fully compressed while the drive lever is stationary. Continued rotation of the cocking lever thereafter abruptly releases the spring which quickly rotates the drive lever to its end position, thereby rotating the drive shaft.

REFERENCES:
patent: 935226 (1909-09-01), Peterson
patent: 1518701 (1924-12-01), Penn
patent: 1637961 (1927-08-01), Wells
patent: 2014637 (1935-09-01), Schellenger
patent: 2131269 (1938-09-01), Byram
patent: 2198277 (1940-04-01), Schellenger
patent: 3538273 (1970-11-01), Oster
patent: 4166938 (1979-09-01), Peek

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