Translatable dual magnets

Details Translatable dual magnets Translatable dual magnets

1989-06-26

1990-10-16

Crosland, Donnie L.

Communications: electrical

Condition responsive indicating system

Specific condition

200 819M, 116267, 116273, 7386113, G08B 2100

Patent

active

049638572

ABSTRACT:
A fluid flow detection device includes a fluid conduit, at least one magnet translatable by action of the flow of fluid (gas or liquid) in said conduit and a switch which is caused to change state between "on" and "off" relative to the position of the magnet in the conduit. The switch includes several embodiments as does the support for the at least one magnet. In one embodiment the conduit must be positioned in a vertical position in other embodiments the conduit can take any attitude position. A shut off valve can be employed in combination with the flow detection device.

REFERENCES:
patent: 3611220 (1971-10-01), Hoffman
patent: 3683691 (1972-08-01), Kivenson
patent: 4081635 (1978-03-01), Moore
patent: 4101874 (1978-07-01), Denison et al.
patent: 4475407 (1984-10-01), Kruncos
patent: 4499347 (1985-02-01), Richards
patent: 4694161 (1987-09-01), Sacket
patent: 4788534 (1988-11-01), Engelhardt

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