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US 6,662,826 B1Granted
Liquid metering and transfer valve assembly with port switch
AssigneeAbbott Laboratories
InventorHidesuke Kokawa
Life of this patent
Estimating the term…
Abstract
A multi-disc liquid metering and transfer valve includes a port switch valve disc that has at least two inlet connections. Each of the connections is coupled to different fluid samples, such as blood. The remaining discs of the valve are used to provide measured samples that can be selectively routed to mixing chambers by pumped diluent reagents. The port valve switch can be rotated about its axis to select a desired inlet connection.
Claims15
A liquid metering and transfer valve assembly comprising:
- first and second stationary valves;
- a rotatable inner valve sandwiched between the first and second valves, wherein the inner valve has opposite surfaces sealingly engaged with adjacent surfaces of the first and second valves;
- and
- a rotatable port switch located adjacent to the first valve, such that the first valve is sandwiched between the inner valve and the port switch, the port switch has a surface sealingly engaged with an adjacent surface of the first valve, wherein the port switch comprises first and second input connections to receive externally provided fluids.
1 more element
A liquid metering and transfer valve assembly comprising:
- first and second stationary valve discs;
- a rotatable inner valve disc sandwiched between the first and second valve discss, wherein the inner valve has opposite surfaces engaged with adjacent surfaces of the first and second valve discs;
- a rotatable port switch disc located adjacent to the first valve disc such that the first valve disc is sandwiched between the inner valve disc and the port switch disc, the port switch disc has a surface engaged with an adjacent surface of the first valve disc, and wherein the port switch disc comprises first and second input connections to receive externally provided first and second fluids and selectively transport either the first or second fluid to the first valve disc;
- and
- an axle rod traversing through the first valve disc, second valve disc, inner valve disc and the port switch disc, the port switch disc is coupled to the axle rod in a fixed manner such that the port switch disc rotates about its axis in response to rotation of the axle rod.
2 more elements
Dependencies are inferred from the claim text.