Micro-fluidic dead-end channel structure for pressure measurement within a fluid channel on the basis of the change of the volume of a trapped gas bubble
US8394051B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 10, 2009 |
| Grant date | Mar 12, 2013 |
| Priority date | — |
| Expiry date | Feb 8, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/87338
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A device for detecting pressure and/or temperature changes in a fluid-channel and method thereof are disclosed. The device includes a main duct with an inlet and an outlet, a branch ductwork with a first branch end branching off the main duct downwards the inlet and with a second branch end discharging into the main duct upwards the outlet, and at least one dead-end channel with a first end that branches off the branch ductwork and a second closed end. The dead-end channel is adapted to trap a gas bubble within the dead-end channel when the device is primed or filled with a liquid fluid, wherein the gas bubble changes its size or position if a change in pressure or temperature occurs in the device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.