Measuring and testing – Liquid analysis or analysis of the suspension of solids in a... – Viscosity
Reexamination Certificate
2005-12-06
2005-12-06
Williams, Hezron (Department: 2856)
Measuring and testing
Liquid analysis or analysis of the suspension of solids in a...
Viscosity
C073S054240, C073S570000, C073S514150
Reexamination Certificate
active
06971262
ABSTRACT:
A system for characterizing rheological properties of granular material. A cylindrical measurement cup containing granular material is subject to a uniform vibration induced by a vibration exciter at a user-determined frequency. At the same time, a rotation or an oscillation of a rotating vane tool is performed within the powder and a response measured. Baffles are affixed to the inner wall of the measurement cup to prevent slippage of the granular material during measurement. An energy imparted to the system from the vibration exciter can be measured by an accelerometer coupled to the measurement cup. When sufficient vibrational energy is supplied to the system, a powder contained therein achieves a particle “temperature” sufficient such that the powder behaves as an ergodic system. The visco-elastic properties of the ergodic powder can be reproducibly measured in accordance with known methodology used in molecular fluids, where the powder “temperature” can be varied by changing the vibration frequency or amplitude.
REFERENCES:
patent: 4016766 (1977-04-01), Morris
patent: 5321974 (1994-06-01), Hemmings et al.
patent: 6113976 (2000-09-01), Chiou et al.
patent: 6227039 (2001-05-01), Te'eni
patent: 2003/0067225 (2003-04-01), Yokota et al.
patent: 2003/0200901 (2003-10-01), Yamamuro et al.
Marchal et al.; “Rheology of Free-Flowing Granular Materials”; Progress and Trends in Rheology V, (I. Emri, Ed.) Steinkopff Darmstast, pp. 206-207 (1998).
Ait-Kadi et al.; “Quantitative Analysis of Mixer-Type Rheometers Using Couette Analogy”; Chemical Engineering Department and Cerism, Laval University, Quebec, Canada and Ensic/Gemico, Nancy, France.
Zik et al.; “Mobility of a Sphere in Vibrated Granular Media”; pp. 315-319; (1992) Europhysics Letters.
Barois-Cazenave et al.; “Experimental Study of Powder Rheological Behaviour” (article); 1999; pp. 58-64; Elsevier Science S.A.; France.
Choplin Lionel
Marchal Philippe
Smirani Nadia
Frank Rodney
Pillsbury Wintrhop Shaw Pittman LLP
Waters Investment Limited
Williams Hezron
LandOfFree
System and method for rheological characterization of... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with System and method for rheological characterization of..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System and method for rheological characterization of... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3475811