Liquid pump

Details Liquid pump Liquid pump

F - Mech Eng,Light,Heat,Weapons

04

B

F04B 49/16 (2006.01) F04B 9/117 (2006.01) F04B 53/16 (2006.01) B08B 3/02 (2006.01)

Patent

CA 2559597

A housing of a pump apparatus includes an undivided cavity, an inlet valve through which liquid can enter the cavity, and an outlet valve through which the liquid can exit the cavity. A primary piston is configured to reciprocate in the cavity to draw the liquid into the cavity through the inlet valve during an intake stroke of the piston and discharge the liquid out of the cavity through the outlet valve during a delivery stroke. A reservoir structure is configured to add, to the total volume of the cavity, an extra volume that is a smooth positive function of liquid pressure in the cavity.

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