Measuring and testing – Volume or rate of flow – Mass flow by imparting angular or transverse momentum to the...
Patent
1993-07-28
1994-03-22
Chilcot, Jr., Richard E.
Measuring and testing
Volume or rate of flow
Mass flow by imparting angular or transverse momentum to the...
73232, G01F 300
Patent
active
052953963
ABSTRACT:
A positive displacement piston flow meter for measuring air flow comprising a hollow flowtube, preferably arranged in a vertical orientation, having a movable piston disposed in the flowtube for movement between a starting position, preferably at the bottom end of the piston stroke, and an elevated position at the top end of the piston stroke. The piston is reciprocated by means of a pressure relief control valve assembly which controls the ascent and descent of the piston. The piston is physically connected to the pressure relief control valve assembly by means of a flexible string, which causes the piston to automatically close the valve assembly for automatic operation on reaching the bottom end of the piston stroke and to reverse direction.
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Fleming, Jr. William T.
Lalin Hill S.
Biegel R.
Chilcot Jr. Richard E.
Gilian Instrument Corporation
Lieberstein E.
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