Sensor syringe
US4410020A · kind A · utility
63Cited by
4References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 26, 1981 |
| Grant date | Oct 18, 1983 |
| Priority date | — |
| Expiry date | Mar 26, 2001 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S250/903
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A sensor syringe or hollow needle arrangement for the automatic withdrawal of a liquid sample from a liquid contained within a vessel. A duct is enclosed in a sheath or jacket-like manner by a light conductor possessing an inlet for an optical source and an outlet leading to an optical detector. During sample withdrawal there is utilized the change in the reflection behavior of the lower end of the light conductor upon its immersion in the liquid in order to control sample withdrawal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.