Flow-no-flow tester

Details Flow-no-flow tester Flow-no-flow tester

1991-10-16

1994-03-01

Raevis, Robert

Measuring and testing

Instrument mechanism or transmission

Rate of change

G01N 1100

Patent

active

052897281

ABSTRACT:
An instrument for measuring certain physical properties of a sample of particulate material so that the flow characteristics of the material can be determined includes an improved compaction assembly having an upper piston that is surrounded by a retractable sleeve and further includes an improved test cell having cylindrical walls, having a failure outlet smaller than the diameter of the failure piston, and having a false bottom that can easily be removed from beneath a sample of compacted material to permit the failure portion of the test to be carried out. The tester can be used for determining the confined yield strength of the material, its bulk density, and its permeability.

REFERENCES:
patent: 2633027 (1953-03-01), Bunnell
patent: 2743605 (1956-05-01), Gamlen
patent: 2880609 (1959-04-01), Byrkett et al.
patent: 3054286 (1962-09-01), Karol
patent: 3985032 (1976-10-01), Avakian
patent: 4316383 (1982-02-01), Fruman et al.
patent: 4615210 (1986-10-01), Wright
patent: 4679441 (1987-07-01), Johnson et al.
patent: 4719809 (1988-01-01), Johansson et al.
patent: 5058674 (1991-10-01), Schultz et al.
patent: 5117699 (1992-06-01), Johanson et al.

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