Patent ID: 7097077

Claim:
A fluid-dispensing pump for discharging therethrough a fluid stored inside a fluid-storing portion from a nozzle head, said fluid-dispensing pump being configured to be disposed between the fluid-storing portion and the nozzle head and comprising: a compressible hollow structure having an inflow opening and an outflow opening, through which the fluid passes, said compressible hollow structure being compressible between an extended position and a compressed position; an inflow valve mechanism connected to the inflow opening of the compressible hollow structure, said inflow valve mechanism being a one-way valve which opens when the compressible hollow structure is extended from the compressed position to the extended position; an outflow valve mechanism connected to the outflow opening of the compressible hollow structure, said outflow valve mechanism being a one-way valve which opens when the compressible hollow structure is compressed from the extended position to the compressed position; and a leakage prevention valve mechanism being disposed within the compressible hollow structure and between the inflow valve mechanism and the outflow valve mechanism, said leakage prevention valve mechanism comprising a valve which is movable with the compressible hollow structure, which is closed when the compressible hollow structure is at the extended position, and which is open when the compressible hollow structure is between the extended position and the compressed position.