Global Patent Index - EP 0106808 B1

EP 0106808 B1 19891108 - RADIAL PISTON MACHINE WITH A VARIABLE DISPLACEMENT

Title (en)

RADIAL PISTON MACHINE WITH A VARIABLE DISPLACEMENT

Publication

EP 0106808 B1 19891108 (FR)

Application

EP 83830132 A 19830628

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

F04B 49/00

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