Fluid shut-off device

Details Fluid shut-off device Fluid shut-off device

1980-07-28

1982-09-14

Nilson, Robert G.

Fluid handling

Control by change of position or inertia of system

With second control

137 784, 137460, 251 65, F16K 1736

Patent

active

043490425

ABSTRACT:
A fluid shut-off device is provided which comprises a magnetic valve body provided in a non-magnetic hollow casing for movement between a first position to open a fluid passage and a second position on a valve seat to close the passage, and an annular permanent magnet provided outside the casing and urged toward the periphery of the valve seat by an elastic spring. The valve body is normally held in the first position but is allowed to move to the second position by the magnetic force of the permanent magnet at a predetermined condition.

REFERENCES:
patent: 2405127 (1946-08-01), Beach
patent: 3212751 (1965-10-01), Hassa
patent: 3467135 (1969-09-01), Muskalla
patent: 3951378 (1976-04-01), Manor
patent: 3983890 (1976-10-01), Rogers
patent: 4207912 (1980-06-01), Ichikawa

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