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:
Nov. 21, 2000
Filed:
May. 12, 1999
Martin Baeuerle, Buehlertal, DE;
Peter Stemer, Waldbronn, DE;
Hewlett-Packard Company, Fort Collins, CO (US);
Abstract
A sample injector for a high-pressure liquid chromatography system that has an injector needle, which is freely movable within a three dimensional sample space. The needle is attached to a means of transport, which moves in the Y-, Y- and Z-axes. The needle can be moved to various sample intake positions on a sample tray and to the injection position where the sample is injected into the capillary system. The means of transport comprises a mechanism called X-carriage, which is movable in horizontal direction. The X-carriage has jib attached that performs the vertical movement. The jib a robot arm, which can rotate for .+-.180.degree. in a horizontal plane. The injection needle is attached to the end of the robot arm. The needle is connected with a metering means, through a flexible connection capillary comprising a glass capillary and a plastic coating. The combination of known high-pressure injection systems with a flexible capillary has the advantage that even the most minute sample can be injected in the analysis cycle without losses.