EP 0106808 B1 19891108 - RADIAL PISTON MACHINE WITH A VARIABLE DISPLACEMENT
Title (en)
RADIAL PISTON MACHINE WITH A VARIABLE DISPLACEMENT
Publication
Application
Priority
IT 4872782 A 19820630
Abstract (en)
[origin: EP0106808A2] The hydraulic motor has a rotary casing (58) concentric with a shaft (59) and has pistons (61) in radial cylinders (60). The pistons are driven by pressurised oil flowing through passages (64). A cam (62) is free to rotate eccentrically in a bore (66) of the shaft, via a sliding coupling and countershaft (65), integral with the cam. The countershaft has a concentric threaded extension (67) engaged in a threaded hole (68) in the bore spigot (69) of a cap (70) on a moving component (10). The outer surface of the cap has a long pitch thread engaged in an enlarged bore (72) of the shaft. The interior (76) of the cap is pressurised with oil and has a counter-piston (77) seating on a countershaft (78) with a servo-mechanism (80,84-86).
IPC 1-7
IPC 8 full level
F04B 49/12 (2006.01)
CPC (source: EP US)
F04B 1/07 (2013.01 - EP US); F04B 49/126 (2013.01 - EP US)
Designated contracting state (EPC)
CH DE FR GB LI
DOCDB simple family (publication)
EP 0106808 A2 19840425; EP 0106808 A3 19850109; EP 0106808 B1 19891108; DE 3380826 D1 19891214; IT 1189306 B 19880204; IT 8248727 A0 19820630
DOCDB simple family (application)
EP 83830132 A 19830628; DE 3380826 T 19830628; IT 4872782 A 19820630