Travelling volume pump chamber surface arrangement
First Claim
1. A traveling volume pump, comprising:
- a pumping chamber defined between first and second opposed pumping chamber surfaces, the pumping chamber surfaces extending from an inlet to an outlet of the pump in a pumping direction;
a plurality of flexible first ridges on the first pumping chamber surface and inclined in the pumping direction, said ridges extending across the first pumping chamber surface in a direction generally transverse to the pumping direction; and
wherein said first ridges have distal peaks adapted to abut and substantially seal against the second pumping surface in the presence of a localized force displacing one of the first and second pumping chamber surfaces towards the other of said first and second pumping chamber surfaces.
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Abstract
A surface arrangement (30) adapted for use in a travelling volume pump. The pump (50) has a pumping chamber defined between first and second opposed pumping chamber surfaces (52, 54), which extend from an inlet to an outlet of the pump in a pumping direction (58). The surface arrangement (30) includes a plurality of flexible ridges (32) inclined in the pumping direction (58) and forming one or more of the first and second pumping chamber surfaces (52, 54). The ridges (32) span across the one or more pumping chamber surfaces (52, 54) in a direction generally transverse to the pumping direction (58) and have distal peaks (34) adapted to abut and substantially seal against the opposed second pumping chamber surface in the presence of a localised force displacing one of the first or second pumping chamber surfaces (52, 54) towards the other of the first or second pumping chamber surfaces (52, 54).
23 Citations
20 Claims
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1. A traveling volume pump, comprising:
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a pumping chamber defined between first and second opposed pumping chamber surfaces, the pumping chamber surfaces extending from an inlet to an outlet of the pump in a pumping direction;
a plurality of flexible first ridges on the first pumping chamber surface and inclined in the pumping direction, said ridges extending across the first pumping chamber surface in a direction generally transverse to the pumping direction; and
wherein said first ridges have distal peaks adapted to abut and substantially seal against the second pumping surface in the presence of a localized force displacing one of the first and second pumping chamber surfaces towards the other of said first and second pumping chamber surfaces. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. An assembly, comprising:
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a first pumping chamber wall having a first interior surface;
a second pumping chamber wall having a second interior surface;
a pumping chamber defined between said first and second interior surfaces and having an inlet, and outlet, and a pumping direction oriented from said inlet toward said outlet;
a plurality of flexible first ridges disposed on said first interior surface and inclined in said pumping direction, said first ridges extending across said first interior surface in a direction generally transverse to said pumping direction; and
said first ridges adapted to abut and substantially seal against said second interior surface in the presence of a localized force displacing one of the first and second pumping chamber surfaces towards the other of said first and second pumping chamber surfaces wherein application of a localized force displacing one of the first and second pumping chamber surfaces towards the other of said first and second pumping chamber surfaces causes said first ridges to abut and substantially seal against said second interior surface. - View Dependent Claims (17, 18, 19, 20)
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Specification