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US 12,343,756 B2Granted
Fluid dispensing devices with enhanced heating elements for non-aqueous fluids
AssigneeHewlett-Packard Development Company, L.P.
InventorsAlexander N. Govyadinov, Michael W. Cumbie, Craig A. Olbrich, Erik D. Torniainen, Omer Gila
Life of this patent
Estimating the term…
Abstract
In some examples, a fluid dispensing device includes a fluid chamber, a heating element adjacent the fluid chamber, and an orifice adjacent the fluid chamber. A ratio of an area of a surface of the heating element to an orifice area of the orifice is greater than or equal to 3, where the surface of the heating element faces the fluid chamber.
Claims14
A fluid dispensing device comprising:
- a fluid chamber;
- a heating element adjacent the fluid chamber;
- and
- an orifice adjacent the fluid chamber, wherein a ratio of an area of a surface of the heating element to an orifice area of the orifice is greater than or equal to 3, the surface of the heating element facing the fluid chamber,
- wherein the heating element comprises a thermal resistor, and the surface of the heating element is in thermal contact with a fluid in the fluid chamber when the fluid is present in the fluid chamber.
2 more elements
A method comprising:
- dispensing a non-aqueous fluid in a fluid chamber through an orifice of a fluid dispensing device having a thermal resistor in thermal contact with the non-aqueous fluid when the non-aqueous fluid is present in the fluid chamber, responsive to an activation of a heating element having a surface that faces the fluid chamber,
- wherein a ratio of an area of the surface of the heating element to an orifice area of the orifice is greater than or equal to 3.
A fluid dispensing device comprising:
- a thermal resistor;
- a fluid chamber;
- and
- an orifice to dispense a non-aqueous fluid in the fluid chamber responsive to activation of the thermal resistor, wherein the thermal resistor is in thermal contact with the non-aqueous fluid when the non-aqueous fluid is present in the fluid chamber.
1 more element
Dependencies are inferred from the claim text.