HYDRAULIC RAM Russian patent published in 2014 - IPC F04F7/02 

FIELD: engines and pumps.

SUBSTANCE: hydraulic ram comprises feed pipe 1, impact valves 10 and 11, two hydraulic cylinders 8 and 9, and overflow pipe 32. Besides, this ram comprises vacuum pumps 28 and 29 and membranes 13 and 14 to be separated hydraulic cylinders 8 and 9 intercommunicated via overflow pipe 32 with valve 34. Ends of pipe 32 are equipped with bellows 33. Impact valves 10 and 11 of both membrane cylinders 8 and 9 are connected by rocker 19 with rods 17 and 18 articulated with vertical strut 21. Membranes 13 and 14 with stiff pin are coupled with impact valves 10 and 11 fitted in vertical pipes 6 and 7 secured at feed pipe 1.

EFFECT: controlled operation, higher reliability and efficiency.

3 cl, 1 dwg