Circuit interrupting device

Details Circuit interrupting device Circuit interrupting device

1978-05-24

1980-01-08

Moses, R. L.

Electricity: electrothermally or thermally actuated switches

Electrothermally actuated switches

Fusible element actuated

200 6108, 200150R, H01H 8538

Patent

active

041830059

ABSTRACT:
An improved circuit interrupting device includes a pair of relatively movable contacts between which an arc is established. As the contacts are moved apart to elongate the arc, a container of pressurized dielectric fluid directs a flow of the fluid from a port at the arc. The fluid and arc elongation ultimately extinguish the arc. A diaphragm which normally closes the port to prevent fluid flow is normally mechanically attached to one of the contacts. When the contacts are moved apart, the container and the one contact also move apart tearing or cutting open the diaphragm to permit the fluid to flow at the arc. Both relative contact movement and the relative movement of the container and the one contact are effected by the action of the ignition products of a power cartridge on a piston-cylinder.

REFERENCES:
patent: 2112841 (1938-04-01), Hill
patent: 2571735 (1951-10-01), Lindell

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