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US 7,118,203 B2Granted
Peristaltic pump
AssigneeHewlett-Packard Development Company, L.P.
InventorsJeremy A. Davis, Melissa S. Gedraitis, Kevin D. Koller
Life of this patent
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Abstract
An occlusion for use in a peristaltic pump includes independently movable occlusion fingers. The fingers are integrally formed as a single unitary body.
Claims39
A peristaltic pump comprising:
- a plurality of movable occluding surfaces;
- a plurality of independently movable occlusion fingers opposite the occluding surfaces, wherein the plurality of fingers are integrally formed as a single unitary body;
- and
- a plurality of springs supported so as to independently resiliently bias the plurality of occlusion fingers.
1 more element
A peristaltic pump comprising:
- movable occluding surfaces;
- independently movable occlusion fingers opposite the occluding surfaces;
- springs independently resiliently biasing the plurality of occlusion fingers, wherein the springs are integrally formed as part of a single unitary body;
- and
- a drive system configured to move the occluding surfaces.
2 more elements
A peristaltic pump comprising:
- movable occluding surfaces;
- independently movable occlusion fingers opposite the occluding surfaces;
- springs independently resiliently biasing the occlusion fingers;
- and
- fluid couplers supported by the fingers.
2 more elements
A peristaltic pump comprising:
- pumping tubes, each tube having a flexible wall portion;
- movable occluding surfaces on a first side of the pumping tubes;
- independently movable occlusion fingers on a second opposite side of the tubes;
- springs independently resiliently biasing the occlusion fingers towards the pumping tubes;
- a drive system configured to move the occluding surfaces so as to compress the tubes against the fingers;
- and
- fluid couplers connected to the pumping tubes, wherein at least one of the fluid couplers includes a fluid sensor.
4 more elements
A peristaltic pump comprising:
- movable occluding surfaces;
- an occlusion including:
- a base portion;
- and
- occlusion fingers pivotally coupled to the base portion and extending opposite the surfaces;
- a holder releasably and directly coupled to the base portion of the occlusion without fasteners;
- a spring system including:
- a base portion releasably and directly coupled to the holder without fasteners;
- and
- springs extending from the base portion into engagement with the fingers;
- and
- a drive system configured to move the occluding surfaces.
9 more elements
A peristaltic pump comprising:
- fluid passages, wherein each fluid passage includes a compressible portion;
- a first unit having independently movable surfaces adjacent the compressible portion of each of the fluid passages;
- a second unit integrally formed as a single unitary body having biasing means for resiliently biasing the independently movable surfaces against movement away from the compressible portions;
- and
- means for compressing the compressible portions of the fluid passages to move fluid along the fluid passages.
2 more elements
An occlusion for use in a peristaltic pump, the occlusion comprising:
- independently movable occlusion fingers, wherein the fingers are integrally formed as a single unitary body and, wherein each of the fingers includes means for retaining a tube in place.
A printer comprising:
- an ink dispensing pen;
- ink reservoirs;
- and
- a pump comprising:
- pumping tubes in fluid communication with the ink reservoirs and the ink dispensing pen, each tube having a flexible wall portion;
- movable occluding surfaces on a first side of the pumping tubes;
- independently movable occlusion fingers on a second opposite side of the pumping tubes, wherein the fingers are integrally formed as a single unitary body;
- and
- springs independently resiliently biasing the occlusion fingers towards the pumping tubes;
- and
- a drive system configured to move the occluding surfaces so as to compress the tubes against the fingers.
8 more elements
An occlusion for use in a peristaltic pump, the occlusion comprising:
- independently movable occlusion fingers, wherein the fingers are integrally formed as a single unitary body and wherein each of the fingers is configured to support a fluid coupler.
Dependencies are inferred from the claim text.