Rheometer with axial resistive force measurement

Measuring and testing – Liquid analysis or analysis of the suspension of solids in a... – Viscosity

Reexamination Certificate

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C073S054230, C073S054380

Reexamination Certificate

active

10496539

ABSTRACT:
A rheometer comprises a vessel mounted on a stand and a rotatable blade mounted above the vessel. A substance for rheometric assessment is put in the vessel. The rotor is advanced linearly into the substance while at the same time rotating. The blade is arranged with a profile such that there is substantially zero slip as it progresses, thereby minimising disturbance to the substance. The rheometric assessment is based on the axial force exerted as a result of the resistance of the substance to the progression of the blade through it.

REFERENCES:
patent: 5610325 (1997-03-01), Rajagopal et al.
patent: 6065330 (2000-05-01), Freeman et al.
patent: 6481267 (2002-11-01), Iles et al.
patent: 197 08 323 (1997-09-01), None
patent: 0798 549 (1997-10-01), None
patent: 1 102 053 (2001-05-01), None
patent: 2 798 465 (2001-03-01), None
patent: 2289947 (1995-12-01), None
patent: WO 90/08309 (1990-07-01), None
patent: WO 97/36162 (1997-10-01), None
Chapter III, “Some Commercial Rotational Viscometers,” Viscosity and Flow Measurement A Laboratory Handbook of Rheology by Van Wazer, et al.,Interscience Publishers, 1963.

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