Valve system for a coulometric analyte sensing instrument

Details Valve system for a coulometric analyte sensing instrument Valve system for a coulometric analyte sensing instrument

2008-05-02

2011-12-13

Rivell, John (Department: 3753)

Fluid handling

Systems

Flow path with serial valves and/or closures

C137S903000, C251S063500, C251S900000

Reexamination Certificate

active

08074683

ABSTRACT:
A valve system that includes (i) first and second longitudinally facing members defining a gap therebetween in fluid communication with transversely offset first and second orifices through the members, (ii) a primary biasing means longitudinally biasing the members away from one another, (iii) an elastic element positioned within the gap between the first and second orifices, and (iv) a repositioning means for longitudinally repositioning one of the members towards the other member against the bias of the primary biasing means for adjusting the longitudinal height of the gap. The members can be repositioned between (a) a first position wherein the elastic element does not seal the gap so as to allow fluid flow from the first orifice to the second orifice through the gap, and (b) a second position wherein the elastic element is compressed between the members and seals the gap so as to prevent fluid flow from the first orifice to the second orifice through the gap.

REFERENCES:
patent: 2827930 (1958-03-01), Seegrist
patent: 4474358 (1984-10-01), Bennett
patent: 5323807 (1994-06-01), Gauld et al.
patent: 6186477 (2001-02-01), McCombs et al.
patent: 7059579 (2006-06-01), Stevenson

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