Magnetically actuable shock responsive unit

Details Magnetically actuable shock responsive unit Magnetically actuable shock responsive unit

1982-05-24

1984-10-09

Nilson, Robert G.

Fluid handling

Control by change of position or inertia of system

With second control

251 68, F16K 1736

Patent

active

044755651

ABSTRACT:
Apparatus including a weight formed at least partially of magnetic material and positioned on a support and adapted to be displaced horizontally relative to the support by earthquake or other shock forces, mechanism operable upon such shock induced horizontal displacement of the weight relative to the support to actuate a valve or other controlled device, and means near and essentially opposite the weight acting to produce a magnetic field applying a force magnetically to the weight displacing it horizontally relative to the support in a relation actuating the controlled device without subjection to shock forces.

REFERENCES:
patent: 2637331 (1953-05-01), Sullivan
patent: 4185507 (1980-01-01), Domyan
patent: 4207912 (1980-06-01), Ichikawa
patent: 4261379 (1981-04-01), Berry

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