Patent · US Expired

Process for keeping dustfree an apparatus for detecting impurity particles

US5103087A · kind A · utility

2Cited by

6References

5Claims

0Family size

Assignee

Harro Hoefliger Verpackungsmaschinen GmbH · DE

Inventors

Harro Hofliger
Gerhard Barth · Auma, DE

Key dates

Filing date	Mar 30, 1990
Grant date	Apr 7, 1992
Priority date	—
Expiry date	Mar 30, 2010

Classification

Technology area (CPC G)Physics
CPC primaryG01N2021/151
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A process and apparatus for detecting impurity particles in fluids, particularly in infusion solutions contained in bottles, with the apparatus including illuminating and etecting device for defining an optical path through which a fluid is conveyed along a fluid conveying path. To increase reliability of detection, pure air is blow from the optical path into a fluid conveying channel thereby ensuring freedom from dust. The conveying channel of the fluid in a vicinity of the illuminating and detecting device, in a direction of the optical path, has an opening, and a blower having a filter is located on the other side of the opening, as viewed in a direction of the conveying path.

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