Fluid dispensing apparatus having means for measuring fluid volume continuously
US7104422B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 23, 2004 |
| Grant date | Sep 12, 2006 |
| Priority date | — |
| Expiry date | Feb 23, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2035/1041
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A fluid dispensing apparatus is described, the operation of which involves installation thereinto of a single-use fluid dispenser cartridge. The cartridge itself comprises a pliable fluid reservoir and a fill tube assembly. The fill tube assembly—the component which most immediately acquires and delivers a definable volume of fluid into a vial or other container—is characterized by its incorporation of means for continuously measuring fluid volume therein, particularly, as a function of electrical capacitance. Accuracy, precision, and reliability are improved. The apparatus can be used to dispense a broad range of fluids, including viscous fluids. No moving mechanical parts are required in the measurement of capacitance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.