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US 2005/0238515 A1Published application
Peristaltic pump
AssigneeHewlett-Packard Development Company, L.P.
InventorBlair Kent
Life of this patent
Estimating the term…
Abstract
A peristaltic pump includes a plurality of occlusion surfaces and a plurality of rotors. The plurality of occlusion surfaces include a first occlusion surface and a second occlusion surface. The plurality of rotors includes a first rotor configured to be rotated about an axis and carrying a first set of occluding surfaces and a second rotor configured to be rotated about the axis and carrying a second set of occluding surfaces. The first set of occluding surfaces and the second set of occluding surfaces have a staggered pitch.
Claims52
A peristaltic pump comprising:
- a plurality of axially arranged occlusion surfaces including:
- a first occlusion surface;
- and
- a second occlusion surface;
- a plurality of rotors including:
- a first rotor configured to be rotated about an axis and carrying a first set of occluding surfaces;
- and
- a second rotor configured to be rotated about the axis and carrying a second set of occluding surfaces, wherein the first set of occluding surfaces and the second set of occluding surfaces have a staggered pitch.
5 more elements
A peristaltic pump comprising:
- a first occlusion surface;
- and
- a rotor carrying a set of occluding surfaces, wherein the occluding surfaces are configured to resiliently flex away from the first occlusion surface.
A peristaltic pump comprising:
- a first occlusion surface;
- a second occlusion surface facing the first occlusion surface;
- a rotor carrying a set of occluding surfaces between the first occlusion surface and the second occlusion surface, wherein the first occlusion surface and the second occlusion surface are configured to resiliently flex away from one another.
An occluding arrangement for use in a peristaltic pump, the arrangement comprising:
- a rotor configured to be rotated about an axis and including a plurality of posts;
- and
- rollers rotatably coupled to the plurality of posts, wherein the posts are resiliently flexible towards the axis.
A housing for a peristaltic pump, the housing comprising:
- a first occlusion surface;
- a second occlusion surface facing the first occlusion surface;
- and
- a separation slit formed in the housing between the first occlusion surface and the second occlusion surface to facilitate resilient flexing of the first occlusion surface and the second occlusion surface away from one another.
1 more element
An image-forming device comprising:
- at least one fluid-dispensing device configured to dispense fluid upon a medium;
- fluid reservoirs;
- and
- a pump comprising:
- tubes in fluid communication with a fluid reservoir and the at least one fluid-dispensing device;
- a plurality of occlusion surfaces including:
- a first occlusion surface;
- and
- a second occlusion surface;
- a plurality of rotors including:
- a first rotor configured to be rotated about an axis and carrying a first set of occluding surfaces;
- and
- a second rotor configured to be rotated about the axis and carrying a second set of occluding surface, wherein the first set of occluding surfaces and the second set of occluding surfaces have a staggered pitch.
10 more elements
An image-forming device comprising:
- a fluid-dispensing device configured to dispense fluid upon a medium;
- a fluid reservoir;
- and
- a pump comprising:
- a first tube and a second tube in fluid communication with the fluid reservoir and the fluid-dispensing device;
- occlusion surfaces on opposite sides of the tubes;
- and
- a rotor carrying a set of occluding surfaces between the tubes, wherein the set of occluding surfaces are configured to resiliently flex away from the occlusion surfaces.
5 more elements
A peristaltic pump comprising:
- a housing including:
- a first occlusion surface;
- and
- a second occlusion surface facing the first occlusion surface;
- a rotor carrying a set of occluding surfaces opposite the first occlusion surface and the second occlusion surface;
- a first tube between the first occlusion surface and the set of occluding surfaces;
- and
- a second tube between the second occlusion surface and the set of occluding surfaces, wherein the first tube and the second tube, collectively, have a first spring constant at a beginning of occlusion of the tubes and wherein the first occlusion surface and the second occlusion surface are configured to flex away from one another with a second spring constant of no greater than eight times the first spring constant at a beginning of occlusion of the tubes.
5 more elements
A peristaltic pump comprising:
- a first occlusion surface along an axis;
- a second occlusion surface along an axis;
- a first rotor carrying a first set of occluding surfaces opposite the first occlusion surface;
- a second rotor carrying a second set of occluding surfaces opposite the second occlusion surface;
- and
- means for moving at least one of the first set of occluding surfaces and the second set of occluding surfaces between a first position in which the first set of occluding surfaces and the second set of occluding surfaces have a staggered pitch and a second position in which the first set of occluding surfaces and the second set of occluding surfaces have an off pitch.
3 more elements
A peristaltic pump comprising:
- a first occlusion surface about an axis;
- a rotor carrying a set of occluding surfaces opposite the first occlusion surface;
- and
- means for resiliently flexing the set of occluding surfaces towards the axis.
1 more element
A method for pumping fluid, the method comprising:
- rotating a first set of occluding surfaces against a first tube;
- rotating a second set of occluding surfaces against a second tube while the first set and the second set have a staggered pitch;
- and
- rotating the second set of occluding surfaces to a position such that the first set of occluding surfaces and the second set of occluding surfaces have an off pitch.
1 more element
Dependencies are inferred from the claim text.