Fluid pumps with shifters
AssigneeHewlett-Packard Development Company, L.P.
InventorKundan Singh
Life of this patent
Estimating the term…
Abstract
In an example, a fluid pump includes a shifter having a first end and pivotable about a second end, a cam rotatably engaged with the shifter, wherein the cam is to rotate about a cam shaft axis if the shifter pivots about the second end, a diaphragm fluidly engaged with a fluid cavity, a collar movable with a cam surface of the cam, wherein the collar is to compress the diaphragm so as to decrease the volume of the fluid cavity, a fluid inlet having a one-way inlet valve to only allow fluid into the fluid cavity, and a fluid outlet having a one-way outlet valve to only allow fluid out of the fluid cavity, wherein the one-way outlet valve is to allow fluid out of the fluid cavity upon the volume of the fluid cavity being decreased.
Claims20
A fluid pump, comprising:
- a shifter having a first end and pivotable about a second end, wherein the shifter is to pivot about the second end responsive to the first end receiving a linear force;
- a spring to bias the first end of the shifter in a direction opposite to a direction from which the first end receives the linear force;
- a cam rotatably engaged with the shifter, the cam to rotate about a cam shaft axis responsive to the shifter pivoting about the second end;
- a diaphragm fluidly engaged with a fluid cavity;
- a collar movable with a cam surface of the cam, the collar to compress the diaphragm so as to decrease a volume of the fluid cavity;
- a fluid inlet having a one-way inlet valve to only allow fluid into the fluid cavity;
- and
- a fluid outlet having a one-way outlet valve to only allow fluid out of the fluid cavity, the one-way outlet valve to allow fluid out of the fluid cavity upon the volume of the fluid cavity being decreased.
A multi-channel fluid pump, comprising:
- a pump housing;
- a shifter having a first end extending from the pump housing and a second end, the first end to receive a linear force to cause the shifter to rotate about the second end;
- a cam shaft rotatably engaged with the shifter and extending along the pump housing;
- a cam fixed to the cam shaft, the cam having a cam surface;
- a collar movable with the cam surface;
- and
- a plurality of pump channels, each pump channel comprising:
- a diaphragm at least partially defining a fluid cavity;
- a fluid inlet having a one-way inlet valve to only allow fluid into the fluid cavity;
- and
- a fluid outlet having a one-way outlet valve to only allow fluid out of the fluid cavity,
- wherein the collar is to move with the cam surface so as to compress each diaphragm of the plurality of pump channels so as to decrease a volume of each fluid cavity.
An imaging device, comprising:
- a carriage to move along a carriage path within the imaging device;
- and
- a multi-channel fluid pump, comprising:
- a pump housing disposed within the imaging device;
- a shifter having a first end and a second end, the first end extending from the pump housing to receive a linear force from the carriage to cause the shifter to rotate about the second end;
- a cam shaft rotatably engaged with the shifter and having a cam with a cam surface, the cam and cam surface to rotate about a cam shaft axis responsive to the shifter rotating about the second end;
- a collar engaged with the cam surface and movable along an actuation direction upon responsive to the cam surface rotating about the cam shaft axis;
- and
- a plurality of pump channels, each pump channel comprising:
- a diaphragm at least partially defining a fluid cavity;
- a fluid inlet having a one-way inlet valve to only allow fluid into the fluid cavity;
- and
- a fluid outlet having a one-way outlet valve to only allow fluid out of the fluid cavity,
- wherein the collar is to move along the actuation direction so as to compress each diaphragm of the plurality of pump channels so as to decrease a volume of each fluid cavity.
Dependencies are inferred from the claim text.