GEAR HYDRAULIC MACHINE Russian patent published in 1995 - IPC

FIELD: mechanical engineering. SUBSTANCE: driving and driven gears with journals are received in mutually intersected bores of the housing. The journals are set in bearing bushings mated by way of the flat cuts which are parallel to the gear axes. Semi- open grooves are formed in the outer sides of the bushings from the side of the gear faces and arranged from their external diametrically opposite sides with respect to the pole of the gear engaging. The chambers are separated from the grooves and coupled with the outlet passage of the housing through C-shaped throttle slots which are defined by outer surfaces of the bushings and bores made in the housing for the bushing. The ends of the chambers which are in communication with the output passageway intersect the planes which pass through the gear axes and are perpendicular to the plane passing through the axes of the driving and driven gears. The other ends of the chambers are arranged from the side of the inlet passage within angular extension of semi- opened grooves. EFFECT: improved design. 2 dwg