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US 2006/0130928 A1Published application
Bio-ejector filling stops to facilitate efficient filling
AssigneePalo Alto Research Center Incorporated
InventorJohn Fitch
Life of this patent
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Abstract
Disclosed is a small volume, liquid dispenser having particular application in the analytical fields. The liquid dispensers can be quickly and reliably filled to a predetermined volume without monitoring liquid flows or volumes or filling times. Various versions of the dispenser and systems utilizing one or more of the dispensers are disclosed.
Claims19
A liquid dispenser adapted to allow filling with liquid to a:
- predetermined volume, the dispenser comprising:
- a lid defining an upper surface, an oppositely directed lower surface, and a fill aperture extending between the upper surface and the lower surface;
- a base component defining a bottom face, an oppositely directed inner face, the base component defining a channel extending therethrough and providing fluid communication between the inner face and the bottom face;
- a liquid reservoir disposed between the lid and the base, the reservoir defining a hollow region and a passage providing communication to the hollow region wherein the passage is in flow communication with the channel of the base component;
- and
- a liquid stop device disposed between the fill aperture of the lid and the hollow region of the liquid reservoir.
3 more elements
A liquid dispenser adapted to accommodate filling to a selected predetermined volume, the dispenser comprising:
- a lid defining a first fill aperture and a second fill aperture;
- a base including an apertured region, a liquid port, and a channel providing flow communication between the apetured region and the liquid port;
- a liquid reservoir disposed between the lid and the base and defining a first interior hollow region and a second hollow interior region, both first and second regions accessible from a passageway defined in a wall of the reservoir;
- a first liquid stop device disposed between the first fill aperture and the first interior hollow region defined in the liquid reservoir;
- and
- a second liquid stop device disposed between the second fill aperture and the second interior hollow region defined in the liquid reservoir.
3 more elements
A system for readily filling at least two liquid dispensers, the system comprising:
- a distribution header providing access to a vacuum source, the header including at least two access members;
- at least two liquid dispensers, each dispenser adapted to be placed in communication with a corresponding access member and thereby -in communication to the vacuum source, each dispenser including (i) a lid defining a fill aperture for communication with the vacuum source, (ii) an apertured base, (iii) a liquid reservoir disposed between the lid and the base;
- and a liquid stop device disposed in the flow path between a corresponding access member and the liquid reservoir.
Dependencies are inferred from the claim text.