Bubble-actuated valve with latching

Details Bubble-actuated valve with latching Bubble-actuated valve with latching

2006-01-03

2006-01-03

Jacyna, J. Casimer (Department: 3751)

Valves and valve actuation

Heat or buoyancy motor actuated

Reexamination Certificate

active

06981687

ABSTRACT:
A bubble-actuated valve with latching may be utilized to regulate fluid flow in any number of applications, including the controlled delivery of drugs or other bioactive agents or compounds. The bubble-actuated valve utilizes the bubble to move a solid object that does the actual blocking of the flow channel to regulate the flow of liquid through the valve. The bubble-actuated valve may also include a latching mechanism. One such latching mechanism utilizes the capillary attraction between the solid object and neighboring walls to latch the solid object in place when the valve is not actuated.

REFERENCES:
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patent: 2003/0057391 (2003-03-01), Krulevitch et al.
patent: 2003/0150716 (2003-08-01), Hua et al.
patent: 2004/0086872 (2004-05-01), Childers et al.
patent: WO 01/94823 (2001-12-01), None
Papavasiliou, A.P. et al., “High-speed and bi-stable electrolysis bubble actuated gate valves” Proceedings of the 11thInternational Conference on Solid State Sensors and Actuators Jun. 10, 2001, pp. 940-943 XP002321460, Munich, Germany.
European Search Report EP 04 25 0325 dated Mar. 16, 2005.

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