Measuring device

Details Measuring device Measuring device

1984-09-18

1987-03-24

Frankfort, Charles

Measuring and testing

Specific gravity or density of liquid or solid

73 73, G01N 924, G01N 1910

Patent

active

046515569

ABSTRACT:
A device for measuring density and moisture of a material includes a hollow roller rotatably mounted on a shaft for rolling movement on the surface of the material. A radioactive source and density and moisture detectors are supported below the shaft and adjacent to the inner surface of the roller at substantially a fixed distance from the surface of the material being measured as the roller is rolled. The detectors are coupled to a conventional counter and microprocessor circuitry which provide an output reading related to the density or moisture content of the material. The shaft may be mounted for tilting movement so that the roller may pitch in conformity to contours in the material surface.

REFERENCES:
patent: 1676941 (1928-07-01), Cantu
patent: 2172313 (1939-09-01), Young
patent: 3143886 (1964-08-01), Lippke
patent: 3395631 (1968-08-01), Smith
patent: 3628375 (1971-12-01), Pagano
Brochure of "On Top", Roof Moisture Survey Service; Copyright 1979; Bulletin 1289 of Seaman Nuclear Corporation.
Density on the Run; Seaman Nuclear Corporation; no date but submitted as prior art brochure by applicant.

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