Abstract: A fluid-dispensing pump 1 includes a cylinder 11, a piston 12 which can reciprocate inside the cylinder 11, a coupling tube 13 for coupling the nozzle head 2 and the piston 12, a coil spring 17 for giving momentum to the piston 12 in a direction of sending it up via the coupling tube 13, an inflow valve mechanism 14 for introducing a fluid stored inside the fluid-storing portion 4 into the cylinder 11, an outflow valve mechanism 15 for dispensing the fluid from the nozzle head 2, and a leakage prevention mechanism 18, which prevents a fluid having flowed into the cylinder 11 from leaking out to a fluid flow path 131 of the coupling tube 13 when a pressure is not applied to the nozzle head 2.

Abstract: A fluid discharge pumping apparatus includes: a drive mechanism; a cylinder; an outflow valve mechanism and an inflow valve mechanism coupled to the cylinder; a piston member inside the cylinder; and a piston-supporting member attached to the piston member driven by the drive mechanism to move the piston member. The inflow valve mechanism opens when the interior of the cylinder is depressurized, whereas the outflow valve mechanism opens when the interior of the cylinder is pressurized.