The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 06, 2006
Filed:
Oct. 29, 2001
Nikolaus Ingenhoven, Männedorf, CH;
Agathe Hodac, Rapperswil, CH;
Noa Schmid, Grabs, CH;
Tecan Trading AG, Mannedorf, CH;
Abstract
The invention relates to a device () for dispensing or aspirating/dispensing liquid samples, including a pump () and a micro-ejection device (), the micro-ejection device () having a pulse generator () with a chamber (). The pulse generator () is used to produce pressure waves in the liquid in order to cause the samples of a liquid to be dispensed. The micro-ejection device () also comprises an end piece () and a liquid line () which connects the pulse generator () to the end piece () the pulse generator comprises a micro-actuator () which is configured to function in the same direction as that in which the pressure wave leaves the chamber (). The inventive devices are characterised in that the chamber (), in the area of the end facing away from the end piece (), or the corresponding connecting element () has a narrowed section () which restricts any expansion of the pressure waves in the direction of the pump (). The invention also relates to systems with multiple devices of this type.