EP 0223656 B1 19900103 - MECHANISM, ENGINE OR PUMP WITH AT LEAST TWO DIFFERENT SWEPT VOLUMES
Title (en)
MECHANISM, ENGINE OR PUMP WITH AT LEAST TWO DIFFERENT SWEPT VOLUMES
Publication
Application
Priority
FR 8515352 A 19851016
Abstract (en)
[origin: US4724742A] The invention relates to a hydraulic motor having an undulating cam and at least one large and one small selectable operating cylinder capacity. In the motor, cylinder feed orifices (41a, 42a) are distributed around the circumference of a circle about the axis of rotation (5), and the small cylinder capacity corresponds to an irregular angular distribution of active cylinder orifices (41a) which continue to be fed. This configuration makes it possible to provide a constant velocity motor with at least two different cylinder capacities and which is mechanically long-lasting.
IPC 1-7
IPC 8 full level
F03C 1/24 (2006.01); F03C 1/247 (2006.01); F03C 1/30 (2006.01); F03C 1/40 (2006.01); F04B 1/10 (2006.01); F04B 1/107 (2006.01); F04B 1/113 (2006.01)
CPC (source: EP US)
F03C 1/045 (2013.01 - EP US)
Designated contracting state (EPC)
DE GB
DOCDB simple family (publication)
FR 2588616 A1 19870417; FR 2588616 B1 19880108; DE 3668037 D1 19900208; EP 0223656 A1 19870527; EP 0223656 B1 19900103; FI 85179 B 19911129; FI 85179 C 19920310; FI 864184 A0 19861016; FI 864184 A 19870417; IN 169761 B 19911221; JP S62168972 A 19870725; US 4724742 A 19880216
DOCDB simple family (application)
FR 8515352 A 19851016; DE 3668037 T 19861014; EP 86402276 A 19861014; FI 864184 A 19861016; IN 907DE1986 A 19861014; JP 24428286 A 19861016; US 91946786 A 19861016