Patent · US Expired

Apparatus for measuring surface tension

US4361032A · kind A · utility

9Cited by

2References

3Claims

0Family size

Assignee

Agfa-Gevaert NV · BE

Inventors

Werner Lessnig
Gunter Metz · Blaubeuren, DE
Willi Spiegel
Manfred Faust · Bensberg, DE
Gunter Junkers · Leverkusen, DE

Key dates

Filing date	Sep 12, 1980
Grant date	Nov 30, 1982
Priority date	—
Expiry date	Sep 12, 2000

Classification

Technology area (CPC G)Physics
CPC primaryG01N2013/0241
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

An apparatus for automatically determining the surface tension by the stalagmometer principle using a pipette containing a test volume, having a drop face at its lower end and is provided with three light barriers. The three light barriers are connected to an evaluation circuit which counts the number of whole drops and also determines the fractions of whole drops pertaining to the test volume.

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