Patent · US Expired

Microdispensing system for the open-jet dispensing of liquids

US6415995B1 · kind B1 · utility

12Cited by

4References

6Claims

0Family size

Assignee

Cybio AG · DE

Inventors

Thilo Enderle · Rheinfelden (Baden), DE
Christof Fattinger · Blauen, CH
Gerhard Flury · Binzen, DE
Hans-Peter Hirt · Allschwil, CH
René Rietmann · Kaiseraugst, CH
Hansjörg Tschirky · Ettingen, CH

Key dates

Filing date	Nov 8, 2000
Grant date	Jul 9, 2002
Priority date	—
Expiry date	Nov 8, 2020

Classification

Technology area (CPC G)Physics
CPC primaryG01N2035/1034
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A microdispensing system is useful for the open-jet dispensing of liquids. A valve having a valve chamber is bounded by an impermeable elastic membrane and is filled with the liquid for dispensing. One or more liquid supply lines lead to the valve chamber. An outlet closed from the exterior by the membrane in the position of rest leads from the chamber to a dispensing nozzle. An actuator chamber is disposed on the other side of the membrane. In the actuator chamber, an electromechanical drive is connected to the membrane for the purpose of briefly lifting the membrane from the outlet. The actuator chamber is closed in such manner that it can be subjected to a pressure differing from atmospheric pressure.

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