Detector for a meter prover
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United States of America Patent
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Sep 14, 2004
Grant Date -
N/A
app pub date -
Apr 29, 2003
filing date -
Apr 29, 2003
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A detector for a meter prover. The detector includes a non-ferromagnetic barrel having a cylindrical bore formed longitudinally therethrough. A magnetic proximity switch is mounted in the bore near one end of the barrel. A ferromagnetic piston is disposed in the bore near the other end of the barrel. A spring urges the piston away from the proximity switch. A pair of wipers surrounds the piston and forms a fluid tight seat between the bore and the piston. A passageway extends longitudinally through the length of the piston in order to permit fluid flow therethrough.
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