Safety shut off valve

Details Safety shut off valve Safety shut off valve

1993-11-09

1995-04-25

Nilson, Robert G.

Fluid handling

Control by change of position or inertia of system

251 65, F16K 1736

Patent

active

054090318

ABSTRACT:
A device that will automatically shut-off the flow of a fluid when the device senses predetermined seismic and other shock forces. The device includes a housing having an inlet and outlet in communication with the flow of fluid. An inertia ball, which moves directly or indirectly from a resting position to block the flow of fluid, is held in a closed position by the force of an external magnet. When the external magnet moves about a given path, the inertia ball moves to a resting position, thus opening the flow of fluid. The movement of the external magnet along the given path forces the inertia ball to follow the magnet, thus providing an easy way of controlling the flow of fluid without the use of mechanical seals.

REFERENCES:
patent: 2215044 (1939-02-01), Kammerdiner
patent: 3747616 (1973-07-01), Lloyd
patent: 4212313 (1980-07-01), Winters
patent: 4245814 (1981-01-01), Shimizu
patent: 4382449 (1983-05-01), Nelson
patent: 4485832 (1984-12-01), Plemmons
patent: 4844113 (1989-07-01), Jones
patent: 5052429 (1991-10-01), Yoo
patent: 5119841 (1992-06-01), McGill

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