Patent ID: 7677155

Claim:
A statically-sealed fuel pump comprising: a pump body; a fuel reservoir within said pump body, wherein said fuel reservoir is capable of holding fuel; a bellows attached to said pump body, wherein said bellows is a stretchable membrane sufficiently in a sealing relationship with said pump body to act as a static seal; a movable piston adjacent to said bellows and translatable within said pump body, wherein said piston is in contact with said fuel reservoir and transmits work to said fuel within said fuel reservoir; and a check valve contained within said pump body and connected to said fuel reservoir and to said bellows; wherein said bellows is sufficiently in a sealing relationship with said piston to act as a static seal; and wherein said check valve permits any fuel in said fuel reservoir that migrates past said piston to flow in a unidirectional manner from said bellows back into said fuel reservoir as the bellows contracts.