Unidirectional captive displacement prover
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United States of America Patent
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Jan 26, 2010
Grant Date -
Jul 16, 2009
app pub date -
Jan 10, 2008
filing date -
Jan 10, 2008
priority date (Note) -
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status (Latency Note)
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Abstract
A prover includes a piston supporting rod extending longitudinally through a cylinder, which cylinder receives and discharges a fluid to measure the flow rate of the fluid by translation of the piston from the fluid receiving end to the fluid discharging end. Motive means includes at least one reel mounted belt for drawing the rod toward the fluid receiving end of the cylinder. Upon such movement of the rod, a poppet valve formed as part of the piston opens to permit fluid flow through the piston. A clutch serving as part of the motive means permits travel of the piston from the fluid receiving end to the fluid discharging end of the cylinder and serve the flow rate measuring function of the prover. Apparatus is also provided to permit opening of the poppet valve for maintenance and/or repair purposes. A framework permits support of the prover in a horizontal or a vertical orientation without affecting the operation, repair or maintenance of the prover.
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