Patent · US Active

Solvent supply with correction of piston movement

US7670480B2 · kind B2 · utility

7Cited by

5References

11Claims

0Family size

Assignee

AGILENT TECHNOLOGIES, INC. · US

Inventors

Klaus Witt · Keltern, DE
Konstantin Choikhet · Karlsruhe, DE
Alexander Bierbaum · Karlsruhe, DE

Key dates

Filing date	Mar 22, 2006
Grant date	Mar 2, 2010
Priority date	—
Expiry date	Nov 11, 2028

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T137/2496
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A supply flow path for supplying a solvent is described. The supply flow path includes metering devices each with a piston, the metering devices being adapted for metering the solvent through separate source paths feeding the supply flow path. The supply flow path further includes a control unit adapted for controlling the metering devices' piston movement in accordance with solvent pressure, wherein a variation of the solvent pressure gives rise to a corresponding variation of a solvent volume contained in the supply flow path or a part thereof. The control unit is adapted for compensating for the variation of the solvent volume by corresponding movements or forward or backward displacements of the pistons.

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