PUMP Russian patent published in 2019 - IPC F04B43/12 F04B47/00 

FIELD: oil industry.

SUBSTANCE: invention relates to pumps and is intended for use in oil industry, in particular, during fluid extraction from well, as well as in other industries and agriculture. Pump comprises housing shaft accommodating flexible material and pistons, working surfaces acting on flexible material. On shaft are installed from one and more guides, inside of which there are pistons, enclosed by bearings, which are in carrier, connected with drive.

EFFECT: simplified pump design, reduced prime cost, raised performance and efficiency.

1 cl, 3 dwg