Fluid pump without non-return valves

A method of micropumping a fluid, said method comprising the steps of:

• providing:
• a micropump body and a displacer defining a micropump chamber, with said micropump chamber being fluid-connected to an inlet via a first opening and to an outlet via a second opening, which openings are not provided with check valves;
• and an elastic buffer bordering on said micropump chamber;
• driving said displacer from a first end position in which said first opening is closed to a second end position in which said opening is free, with the movement of said displacer being sufficiently abrupt to deform said elastic buffer;
• and
• permitting said elastic buffer to relax to provide a pumping action.

A method of pumping a fluid, said method comprising the steps of:

• providing:
• a pump body and a displacer defining a pump chamber, with said pump chamber being fluid-connected to an inlet via a first opening and to an outlet via a second opening, which openings are not provided with check valves;
• and an elastic buffer bordering on said pump chamber;
• said displacer having a first side substantially facing toward said first opening and a second side substantially facing opposite to said first opening,
• driving said displacer at a location on said second side and substantially in the area of said first opening from a first end position in which said first opening is closed to a second end position in which said opening is free, said movement being sufficiently abrupt to deform said elastic buffer;
• and
• permitting said elastic buffer to relax to provide a pumping action.