Liquid delivery device
US7302970B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 8, 2003 |
| Grant date | Dec 4, 2007 |
| Priority date | — |
| Expiry date | May 27, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/86879
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A micro liquid delivery device includes a flow channel for flowing a liquid, at least two pressure-generators for generating pressures provided in the flow channel, and a variable member placed between the pressure-generators and capable of transforming between a first stable state and a second stable state by a generated pressure. A branch of the flow channel is selected by transforming the variable member into the first stable state or the second stable state. A valve for changeover of flow channel branches includes a variable member placed between a pressure-generator and transformable between a first stable state and a second stable state by a generated pressure, with the valve serving to select a branch of flow channel branches by the variable member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.