Volume measurement and dosage device
US5062547A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 9, 1990 |
| Grant date | Nov 5, 1991 |
| Priority date | — |
| Expiry date | May 9, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F11/028
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A volume measurement and dosage device possesses a cylinder- piston- and valve-system (4). With this system, liquid can be drawn up and/or delivered in defined quantities. At least two channels (33, 36, 38) are provided in the valve-system, which can be connected with at least one opening (32) in the cylinder bottom (11). The piston (12) is displaceable within the cylinder (10) by means of an actuation device (3). The cylinder (10) is at the same time surrounded by a holding device (5, 40), in which it is mounted in bearings to rotate with the cylinder bottom (11) around an axis common to the longitudinal axis of the cylinder (Y) or parallel to it. The cylinder bottom (11), with at least two channel openings (29, 30, 31), rests with a sealed seating upon a valve element (28). Through rotation of the cylinder bottom (11), its opening (32) can alternately be aligned with the channel openings (29, 30, 31) of the valve element (28).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.