Horology: time measuring systems or devices – Time interval – Electrical or electromechanical
Reexamination Certificate
2007-03-13
2007-03-13
Miska, Vit (Department: 2841)
Horology: time measuring systems or devices
Time interval
Electrical or electromechanical
C073S054130
Reexamination Certificate
active
10756003
ABSTRACT:
An apparatus uses electrical conductance to determine the start and stop times for viscosity measurements using efflux cups. An efflux cup and two probes are immersed and removed from the fluid. An electric current is applied between each probe and the efflux cup. A timer measures the elapsed time between a decrease in the electric current measured between a first probe and the efflux cup and a decrease in the electric current measured between a second probe and the efflux cup.
REFERENCES:
patent: 3187563 (1965-06-01), Tobias
patent: 3680362 (1972-08-01), Geerdes et al.
patent: 4662030 (1987-05-01), Cooper et al.
American Society for Testing Materials, “Standard Test Method for Viscosity by Dip-Type Viscosity Cups,” ASTM Designation D 4212-99, 1999.
Graymills Corporation, Graymills New Expanded Catalog, Sep. 1999.
Kayes Sean
McAndrews Held & Malloy Ltd.
Miska Vit
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