Patent · US Expired

Apparatus for determining fluid level and fluid density

US5253522A · kind A · utility

19Cited by
20References
21Claims
0Family size

Assignee

Inventors

Key dates

Filing dateJul 11, 1991
Grant dateOct 19, 1993
Priority date—
Expiry dateJul 11, 2011

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG01N9/18
  • WIPO fieldMeasurement
  • WIPO sectorInstruments

Abstract

A density measuring device having a float with a marker provided therein that is connected by a pair of springs to each of the two supports which are on opposite sides of the float along a guide. A sonic waveguide arrangement is provided extending along this guide past at least one of the supports which can measure the relative positions of the float to thereby determine the effective buoyant force on the float and so the density of the fluid in which the float is submerged. Use of a further float permits determining fluid levels.

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