DISPLACEMENT HYDRAULIC MACHINE Russian patent published in 2013 - IPC F03C2/00 F04C2/63 

FIELD: engines and pumps.

SUBSTANCE: displacement machine comprises first and second pumping modules. Every said module comprises annular chamber 3, 4 with two pairs of pistons 7 each being arranged between those 7 of the other pair. Said pairs of pistons are rigidly coupled with separate half shafts articulated with drive shaft via gimbal joints and bevel gears to make planes of aligned yokes and adjacent joints located at 90 degrees. Every joint is coupled by one yoke with half shaft with pistons and, by another yoke, with shaft with bevel gear. Bevel gears of aforesaid first and second modules are engaged with drive shaft bevel gear so that planes of second module joint yokes are inclined to those of first module joint yokes at 45 degrees and located so that torsion angle of every joint approximates to 64 degrees. Inlet openings are communicated with common inlet channel Outlet openings are communicated with common outlet channel.

EFFECT: uniform delivery and fluid flow rate.

4 dwg