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US 3,943,753 AGranted
Solid state viscosimeter
AssigneeHoneywell Inc.
InventorFrank N. Simon
Life of this patent
Estimating the term…
Abstract
A viscosimeter is provided using a piezoelectric transformer to provide vibratory energy thereby imparting shear waves to the surrounding fluid. An output signal provides a representation of the fluid viscosity.
Claims11
A viscosimeter for providing representation of viscosity of a fluid, said viscosimeter comprising:
- a piezoelectric voltage transformer, having electrical terminals thereon serving as input terminals and output terminals, said transformer having surfaces thereof placed in motion in directions in which they are capable of imparting shear waves to those portions of said fluid sufficiently near said surfaces;
- oscillator circuitry means for providing an oscillating electrical voltage at said input terminals;
- and
- output voltage sensing means which senses an oscillating output voltage signal provided between said output terminals to provide said representation, with oscillations in said output voltage signal occurring at frequencies where said output voltage signal has substantially a maximum amplitude.
1 more element
Dependencies are inferred from the claim text.