Measuring and testing – Sampler – sample handling – etc. – Automatic control
Reexamination Certificate
2005-08-16
2005-08-16
Noland, Thomas P. (Department: 2856)
Measuring and testing
Sampler, sample handling, etc.
Automatic control
C073S863110, C366S004000, C366S007000, C366S060000
Reexamination Certificate
active
06928891
ABSTRACT:
An automated apparatus for preparing material samples includes a rotatable drum support assembly, a drum rotatably contacting the drum support assembly, a fan, and a powered drive mechanism. The drum includes a hollow main section and first and second hollow end sections attached to the main section. The first hollow end section includes a first end wall tapering to a first outer aperture. The second hollow end section includes a second end wall tapering to a second outer aperture. The fan is mounted approximate to the first outer aperture for establishing forced air flow through the drum toward the second outer aperture. The drive mechanism rotatably communicates with the drum support assembly for rotating the drum. The apparatus is useful for preparing samples such as paving materials for test such as the determination of specific gravity and absorption.
REFERENCES:
patent: 3554038 (1971-01-01), Powell et al.
patent: 3631712 (1972-01-01), Mercier
patent: 4097925 (1978-06-01), Butler, Jr.
patent: 4756855 (1988-07-01), Mathis et al.
patent: 5082553 (1992-01-01), Tanii
“Standard Test Method for Theoretical Maximum Specific Gravity and Density of Bituminous Paving Mixtures,” ASTM D2041-95, ASTM (USA), p. 176-182, (1995).
Jenkins & Wilson & Taylor, P.A.
Noland Thomas P.
Troxler Electronic Laboratories, Inc.
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