Combined check valve and pressure sensor

Details Combined check valve and pressure sensor Combined check valve and pressure sensor

1995-08-02

1997-11-11

Lopez, F. Daniel

Pumps

Condition responsive control of pump drive motor

Having timer or delay means

60410, 137554, 417 442, F04B 4900

Patent

active

056856970

ABSTRACT:
A check valve, for use in a vacuum accumulator. The check valve includes a movable gate, which blocks fluid flow. The gate carries a first electrical contact, which mates with a second electrical contact, when the gate closes, thereby issuing a signal which indicates closure. The invention eliminates the need for a separate pressure sensor, for sensing pressure within the accumulator.

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