to see something similar, look at the Pilot liquid ink pen.. it too has a series of baffles, that keep the liquid ink moving from the barrel to the point Pilot pens are well known for writing for a long time even against gravity) and yet keep the pen from leaking the liquid ink.

these are very similar to the kind of baffles uses to keep liquid fuel in fuel tanks moving, even when there is no gravity to feed it. (the example is also in the Engines of our Ingenuity text.)

here is a link to the index
http://www.uh.edu/engines/epiindex.htm