Patent · US Expired

Rotary viscometer

US4347734A · kind A · utility

9Cited by

5References

14Claims

0Family size

Inventor

Werner Heinz · Bocholt, DE

Key dates

Filing date	Jun 25, 1980
Grant date	Sep 7, 1982
Priority date	—
Expiry date	Jun 25, 2000

Classification

Technology area (CPC G)Physics
CPC primaryG01N11/14
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

In a rotary viscometer comprising a variable speed drive motor including a speed indicator, such as a tachogenerator or a similar device, and a measuring shaft driven by an output shaft of a rotor of said motor and carrying a measuring member immersible in a medium of which the viscosity is to be measured, the motor stator is rotatably displaceable against the action of a spring, the displacement being a measure of the viscosity. The driving connection between said motor and measuring shaft comprises at least one pair of exchangeable gears or toothed belts and said spring is exchangeable for one having a different spring characteristic.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.