Title:
CAPILLARY FLOW CONTROL SYSTEM FOR FLUID INDICATOR
Document Type and Number:
WIPO Patent Application WO/2013/084046
Kind Code:
A3
Abstract:
A capillary system for a fluid indicator includes a fluid restrictor, and a capillary tube. The fluid restrictor has a small aperture formed therethrough. The capillary tube is adapted to receive a fluid. The fluid restrictor is sealingly affixed into at least one end of the capillary tube so that the small aperture communicates between the inside of the capillary tube and the outside of the capillary tube. The capillary tube is optionally treated so that an inner surface is oilophobic and hydrophobic. The system better controls the interface or meniscus 14 between the fluids contained in the capillary tube, preventing mixing.
Inventors:
VOUILLAMOZ LUCIEN (CH)
Application Number:
PCT/IB2012/002591
Publication Date:
November 21, 2013
Filing Date:
December 05, 2012
Export Citation:
Assignee:
PRECIFLEX SA (CH)
International Classes:
G04B25/00; G04B19/00
Domestic Patent References:
| WO2011021097A2 | 2011-02-24 |
Foreign References:
| US4229975A | 1980-10-28 | |||
| JPS6312929A | 1988-01-20 | |||
| EP0112302A2 | 1984-06-27 |
Attorney, Agent or Firm:
MOETTELI, John (St. Leonhardstrasse 4, St. Gallen, CH)
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