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1. (WO2018220586) ELECTRONIC CIGARETTE FLUID PUMP
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WHAT IS CLAIMED:

1. An electronic cigarette comprising:

a tank configured and arranged to contain eCig juice;

an atomizer including a heating element, and configured and arranged to vaporize eCig juice into an airflow; and

an oscillating diaphragm pump including a diaphragm and a permanent magnet, the oscillating diaphragm pump is positioned in fluid communication with the tank and the atomizer, and configured and arranged to draw eCig juice from the tank and deposit the eCig juice on to the heating element.

2. The electronic cigarette of claim 1, further including an electro-magnet configured and arranged to transmit an oscillating magnetic field in proximity to the permanent magnet; and the permanent magnet is configured and arranged to produce a non-oscillating magnetic field that interacts with the oscillating magnetic field of the electro-magnet to linearly oscillate the diaphragm, which draws eCig juice from the tank and injects the eCig juice on to the heating element.

3. The electronic cigarette of claim 2, further including

controller circuitry electrically coupled to the electro-magnet and the heating element, the controller circuitry configured and arranged to

detect a draw on the electronic cigarette,

in response to the draw, transmit an oscillating electric signal that drives the electro-magnet, and thereby the permanent magnet of the oscillating diaphragm pump which causes eCig juice to be deposited on to the heating element, and

further in response to the draw, drive the heating element with a current sufficient to vaporize the eCig juice on the heating element.

4. The electronic cigarette of claim 1, wherein the oscillating diaphragm pump further includes an inlet valve and an outlet valve, the inlet valve in fluid communication with an inlet of the diaphragm, and the outlet valve in fluid communication with an outlet of the diaphragm, the inlet and outlet valves configured and arranged to prevent reverse flow of the eCig juice through the oscillating diaphragm pump.

5. The electronic cigarette of claim 1, wherein the oscillating diaphragm pump further includes a deformable membrane configured and arranged to facilitate expansion and contraction of the diaphragm.

6. The electronic cigarette of claim 4, wherein the oscillating diaphragm pump further includes an upper housing and a lower housing, the upper housing containing the outlet valve and the lower housing containing the inlet valve, and at least one of the upper and lower housing including a support member circumferentially extending around at least a portion of one or both of the inlet and outlet valves, the support member configured and arranged to stiffen one or both of the inlet and outlet valves and reduce back flow.

7. The electronic cigarette of claim 1, the atomizer further includes a frit that houses the heating element, the frit includes one or more apertures extending through the frit, the apertures configured and arranged to deliver eCig juice to the heating element.

8. The electronic cigarette of claim 7, wherein the heating element is a non-circular, helical coil configured and arranged to minimize contact between the heating element and the frit.

9. The electronic cigarette of claim 8,wherein the heating element is one of a square-shaped, helical coil, and a triangle-shaped, helical coil.

10. The electronic cigarette of claim 1, wherein the atomizer is configured and arranged to direct the airflow through a cavity of the heating element; and the heating element includes a ceramic coating configured and arranged to facilitate wetting the heating element with eCig juice and to mitigate electrical shorting of adjacent heating element coils.

11. The electronic cigarette of claim 3, wherein the controller circuitry is further configured and arranged to detect the strength of a draw, adjust the transmitted oscillating electric signal that drives the electro-magnet, and adjust the current delivered to the heating element to maintain a consistent vapor content per airflow volume delivered to a user.

12. The electronic cigarette of claim 1, wherein the oscillating diaphragm pump is configured and arranged to pump eCig juice at a flow rate of up to 10 milligram/second with a pressure of approximately 0.5 pounds-per-square-inch.

13. The electronic cigarette of claim 1, wherein the oscillating diaphragm pump has a diaphragm travel length between 0.03 and 0.05 inches.

14. The electronic cigarette of claim 7, wherein the heating element is offset from an inner diameter of the frit by less than 0.25 millimeters.

15. The electronic cigarette of claim 1, wherein the heating element includes a rough exterior surface configured and arranged to facilitate wetting the heating element with eCig juice, and to mitigate electrical shorting of adjacent heating element coils.

16. An oscillating diaphragm pump comprising:

a diaphragm including a deformable membrane, an inlet, and an outlet, the diaphragm configured and arranged to expand and contract, and thereby pump a liquid solution through the oscillating diaphragm pump;

a permanent magnet coupled to the diaphragm, the permanent magnet configured and arranged to produce a non-oscillating magnetic field that interacts with an oscillating magnetic field to sequentially attract and repel the permanent magnet, thereby expanding and contracting the diaphragm at the deformable membrane;

an inlet valve in fluid communication with the inlet of the diaphragm;

an outlet valve in fluid communication with the outlet of the diaphragm; and

wherein the inlet and outlet valves are configured and arranged to prevent reverse flow of the liquid solution through the oscillating diaphragm pump.

17. The oscillating diaphragm pump of claim 16, further including an upper housing and a lower housing, the upper housing containing the outlet valve and the lower housing containing the inlet valve, at least one of the upper and lower housing including a support member circumferentially extending around at least a portion of one or both of the inlet and outlet valves, the support member configured and arranged to stiffen one or both of the inlet and outlet valves to reduce back flow.

18. The oscillating diaphragm pump of claim 16, wherein the oscillating diaphragm pump is configured and arranged to pump the liquid solution at a flow rate of up to 10 milligram/second with a pressure of approximately 0.5 pounds-per-square-inch.

19. The oscillating diaphragm pump of claim 16, wherein the diaphragm has a travel length between 0.03 and 0.05 inches.