Patent · US Active

Switching valve for liquid chromatography

US9297790B2 · kind B2 · utility

1Cited by

12References

18Claims

0Family size

Assignee

Dionex Softron GmbH · DE

Inventors

Joachim Wiechers · Planegg, DE
Hermann Hochgraeber · Offenberg, DE
Robert H. Springer · Wyckoff, US

Key dates

Filing date	Aug 7, 2013
Grant date	Mar 29, 2016
Priority date	—
Expiry date	Nov 12, 2033

Classification

Technology area (CPC G)Physics
CPC primaryG01N2030/202
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A switching valve includes a stator and a rotor. The stator includes multiple connection ports. The rotor having predetermined switching positions and interacts with the stator to form a fluidic connection or a fluidic disconnection of predetermined connection ports. The rotor being mounted rotatably via a bearing and pressing device, where the bearing and pressing device is arranged in the housing and loaded with a predefined pressing force in a direction of the stator. The bearing and pressing device includes a spring unit, being supported against a receiving part mounted to rotate about a rotor axis. The receiving part is coupled rotationally conjointly to the rotor and has a drive region which faces away from the stator and is coupled to an output of a drive device.

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