Patent ID: 9341182
Filing Date: 2016-05-17
CPC Classification: F04B,F16K

Claim Text:
1. An electromagnetic pump comprising: a coil configured to conduct an alternating current; a cylinder; a piston, the piston comprising a cavity configured to receive fluid and an aperture defined in a first end thereof, the piston being arranged within the cylinder to define an interface between the piston and the cylinder, wherein the piston is configured to move linearly between a first piston position and a second piston position within the cylinder, and wherein the piston is positioned in the electromagnetic pump within a magnetic field generated by the coil when the coil conducts the current, wherein the magnetic field generated by the coil when the coil conducts the current forces the piston to move towards the second piston position; a biasing means configured to bias the piston towards the first piston position; a seal; and a single valve only, wherein the single valve comprises a single cap only configured to move between a first cap position and a second cap position, wherein when the single cap is in the second cap position, the single cap is positioned to allow fluid to pass through the aperture in the piston, and when the single cap is in the first cap position, the single cap is arranged to fluidly seal the aperture in the piston to prevent a flow of fluid through the aperture and to abut the seal to prevent a flow of fluid from an outlet conduit of the electromagnetic pump to the interface between the piston and the cylinder.