Bolted pressure switch with side operator mechanism and door ass

Details Bolted pressure switch with side operator mechanism and door ass Bolted pressure switch with side operator mechanism and door ass

1977-06-10

1979-01-30

Scott, James R.

Electricity: circuit makers and breakers

Interlocking

Between plural switches

200153G, 200153V, H01H 920, H01H 300

Patent

active

041374339

ABSTRACT:
An operating mechanism for opening and closing the movable contacts of a load break pressure contact switch which is operable from a side of a switch enclosure and has an optional door safety interlock. The operating mechanism comprises a main shaft with a handle attached thereto for rotating the shaft in opposite directions between switch-open and switch-closed positions. An operating lever which is connected to the movable switch contacts is driven by an overcenter toggle spring means which is operated by the main shaft through a lost motion connection mechanism. An optional interlock is provided for the switch enclosure access door and includes a latch to hold the access door closed when the switch contacts are in their closed position and a mechanism to prevent movement of the switch contacts to their closed position when the access door is open. The interlock is operatively actuatable through cam surfaces and stop surfaces on the lost motion connection mechanism. An override for the door latch allows the access door to be opened while the switch contacts remain closed.

REFERENCES:
patent: 2943163 (1960-06-01), Hay
patent: 3084238 (1963-04-01), Baskerville
patent: 3522401 (1970-08-01), Stene
patent: 3876847 (1975-04-01), Dykes et al.

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