Measuring and testing – Specific gravity or density of liquid or solid
Patent
1995-10-18
1997-03-04
Chapman, John E.
Measuring and testing
Specific gravity or density of liquid or solid
73433, 73149, G01N 900, G01F 1700
Patent
active
056081570
ABSTRACT:
An apparatus and method for measuring the volume and calculating the envelope density of an object of known weight. The apparatus has a hollow sample cylinder of known interior diameter mounted to a motor for rotation about its horizontal axis. A dry flowing medium is placed in the sample cylinder and a plunger is removably positioned therein. The plunger is mounted to another drive motor for axial movement within the sample cylinder to compact the dry flowing medium. A load cell connected to the plunger measures the force on the plunger as it advances in the sample cylinder. Control means responsive to the load cell determines the position of the plunger in the sample cylinder at which a known force is exerted on the plunger. The control means also calculates the volume of the dry flowing medium in the sample cylinder both with and without the object positioned therein and divides the difference in the volumes into the weight of the object.
REFERENCES:
patent: 2667782 (1954-02-01), Shea
patent: 2706908 (1955-04-01), MacRoberts
patent: 3060724 (1962-10-01), Smith, Jr. et al.
patent: 3129585 (1964-04-01), Hamilton
patent: 3246504 (1966-04-01), Halff et al.
patent: 3309912 (1967-03-01), Boland et al.
patent: 3741011 (1973-06-01), Seybold
patent: 4112738 (1978-09-01), Turner
patent: 4154098 (1979-05-01), Pelletier
patent: 4196618 (1980-04-01), Patterson
patent: 4224821 (1980-09-01), Taylor et al.
patent: 4283148 (1981-08-01), Peterson
patent: 4361052 (1982-11-01), Nicol et al.
patent: 4699002 (1987-10-01), Rockley
patent: 5323655 (1994-06-01), Eagan et al.
B. Buczek, "Measurement of the Apparent Density of Porous Particles by a Powder Characteristics Tester," Proceedings of Second World Congress Particle Technology, Sep. 19-22, 1990 Kyoto, Japan, pp. 103-109.
Brochure entitled "A Tool for Solid Body Open Porosity Measurement," by Tenakon Research Industrial Corp. (undated).
ASTM Designation: C 830-83 "Standard Test Methods for Apparent Porosity, Liquid Absorption, Apparent Specific Gravity, and Bulk Density of Burned Refractory Brick and Shapes by Vacuum Pressure," Jan. 1984, pp. 247-249.
ASTM Designation: C 493-86 "Standard Test Methods for Bulk Density and Porosity of Granular Refractory Materials by Mercury Displacement," Sep. 1986, pp. 125-127.
ASTM Designation: C 20-87 "Standard Test Methods for Apparent Porosity, Water Absorption, Apparent Specific Gravity, and Bulk Density of Burned Refractory Brick and Shapes by Boiling Water," Aug. 1987, pp. 5-7.
ASTM Designation: C 914-89 "Standard Test Method for Bulk Density and Volume of Solid Refractories by Wax Immersion," Aug. 1989, pp. 286-288.
Camp Ronnie W.
Orr Clyde
Chapman John E.
Micromeritics Instrument Corporation
LandOfFree
Method and apparatus for measuring envelope density does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for measuring envelope density, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for measuring envelope density will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2147554