Modified siphons for improving metering precision
US7998411B2 · kind B2 · utility
41Cited by
24References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 5, 2004 |
| Grant date | Aug 16, 2011 |
| Priority date | — |
| Expiry date | Sep 3, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T436/2575
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present invention provides centrifugal rotors for delivering a premeasured volume of liquid to a chamber in the rotor. In particular the rotors comprise siphons for delivering a premeasured volume of liquid between a first and a second chamber in the rotor. The siphons of the invention are designed such that the inlet of the siphon on the first chamber is radially outward of the siphon outlet on the second chamber. The first chamber is emptied to a level equivalent to the radial position of the siphon outlet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.