Valve position detecting apparatus

Details Valve position detecting apparatus Valve position detecting apparatus

1979-10-19

1981-09-01

Hix, L. T.

Electrical transmission or interconnection systems

Switching systems

Condition responsive

114 36, 340686, B63B 3530

Patent

active

042874327

ABSTRACT:
A hopper valve module is adapted to be removably mounted in the well of a hopper of a hopper dredge vessel and includes a housing and a valve member movable with respect to the housing for opening and closing the hopper outlet. A transmitter tube containing longitudinally spaced-apart magnetic switches and associated resistors is carried by the housing, the switches being connected in circuit with resistors and coupled to power supply and indicating means in the vessel. A hollow sleeve is fixedly secured to the valve member and is disposed in surrounding telescopic relationship with the tube, the sleeve carrying a permanent magnet therein for sequentially actuating the magnetic switches as the valve member moves between its open and closed positions, the varying current through the assembly of switches and resistors indicating the position of the valve member.

REFERENCES:
patent: 3594740 (1971-07-01), Comeau
patent: 3896280 (1975-07-01), Blake

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