Fluid dispenser
US8163257B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 13, 2007 |
| Grant date | Apr 24, 2012 |
| Priority date | — |
| Expiry date | Jun 5, 2028 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01L2400/0439
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A cartridge (10) for dispensing a reagent contained in a reagent reservoir (32). The reservoir (32) is in fluid communication with a deformable dispense tube (26) that is a least partially compressible, in use, to dispense a volume of reagent from the tube (26). The reservoir (32) defines an enclosed gas space (46) above the reagent, and the cartridge (10) includes a gas vent (40) that, in use, admits gas to the gas space (46) in response to dispense of reagent from the tube (26) that serves to control the reservoir pressure as the reservoir (32) is depleted by subsequent dispensing of reagent. A dispenser employing the cartridge (10) and a method of dispensing a volume of reagent are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.