Patent · US Expired

Viscometer

US4574622A · kind A · utility

12Cited by
9References
18Claims
0Family size

Assignee

Inventor

Key dates

Filing dateMar 27, 1984
Grant dateMar 11, 1986
Priority date
Expiry dateMar 27, 2004

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG01N11/08
  • WIPO fieldMeasurement
  • WIPO sectorInstruments

Abstract

A viscometer having the ability of automatically periodically determining the viscosity of liquids having periodic gassing and/or foaming phases comprises pressures taps located on the lower side of a nonvertical portion of a conduit through which the sample liquid is pumped. The viscometer further comprises a three-way valve attached to the pump and means for delaying the pumping of liquid into or out of the pump until the three-way valve has adopted its proper orientation.

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