Members moving within tubes

Details Members moving within tubes Members moving within tubes

1975-06-10

1976-09-07

Goldstein, Herbert

Measuring and testing

Instrument proving or calibrating

Volume of flow, speed of flow, volume rate of flow, or mass...

1510406A, G01F 2500

Patent

active

039787087

ABSTRACT:
An arrester for a discrete body being transported through a closely fitting ipeline by liquid flow, consisting of a final length of pipe with enlarged bore which gradually tapers to a minimum cross section at its closeable end. When the end is closed, a discrete body carried axially into this enlarged bore is decelerated by the action of liquid in the end bore being forced back past the body. Suitable shaping of the taper governs the rate of deceleration.
The invention is particularly applicable to the arrestment of displacement members used in flowmeter provers and provision has also been made for launching an arrested displacement member back into the prover pipe with an acceleration rate governed by a further region of enlarged bore but with reverse taper.

REFERENCES:
patent: 2371243 (1945-03-01), Jordan
patent: 2755742 (1956-07-01), Vincent
patent: 2786219 (1957-03-01), Meyer
patent: 3100308 (1963-08-01), DeSena
patent: 3158888 (1964-12-01), Ericson
patent: 3174171 (1965-03-01), McDermon
patent: 3580045 (1971-05-01), Pfrehm
patent: 3605790 (1971-09-01), Hunter

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