Device for receiving and dispensing liquids

US8685342B2 · kind B2 · utility

Inventors

• Bernd Steinbrenner · Neckargemünd, DE
• Roger Steinbrenner · Hirschhorn, DE

Key dates

• Filing date: Jun 15, 2010
• Grant date: Apr 1, 2014
• Expiry date: Jan 30, 2033

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N35/10
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A device for receiving and dispensing liquids has a plurality of piston-cylinder units (1, 1′, 1″) which are respectively arranged on a piston plate (2) and a cylinder plate (3). The liquid is received and dispensed by displacing the pistons (1′) in the cylinders (1″) by changing the distance between the plates (2, 3), perpendicularly to the plate planes, by means of a drive mechanism (6) and a plate guiding system. The volume can be determined by an upper abutment (4) and a lower abutment (5), at least one of said abutments being regulatable by a regulating means (8). The device is suitable for handling precise volumes of a larger number of piston-cylinder units (1, 1′, 1″) in a technically simple manner. To this end, the same receiving and dispensing volumes of the piston-cylinder units (1, 1′, 1″) are ensured with low requirements in terms of the surface parallelism of the plate planes during the movement in the plate guiding device, by structuring and arranging the abutments (4, 5) in such a way that the parallelism of the plates (2, 3) is obtained in the upper (9) and lower (10) abutment positions.