Global Patent Index - EP 1519006 A1

EP 1519006 A1 20050330 - Swash plate type hydraulic pump or motor

Title (en)

Swash plate type hydraulic pump or motor

Title (de)

Schrägscheiben-Pumpe oder -Motor

Title (fr)

Pompe ou moteur avec plateau en bias

Publication

EP 1519006 A1 20050330 (EN)

Application

EP 04023085 A 20040928

Priority

JP 2003338588 A 20030929

Abstract (en)

A swash plate type hydraulic pump or motor has a first swash plate (30) and a second swash plate (40) which cause a first piston (8) and a second piston (9), respectively, to move reciprocally, opposing each other, so as to expand and contract a volume chamber (10) according to rotation of a cylinder block (4). A rod shape valve body (60) is disposed pushed into a through hole (12) of a shaft axis of the cylinder block (4) so as to be free to rotate relative to the cylinder block (4). A pair of supply and discharge ports (61) that open and supply high pressure and low pressure, respectively, are formed in an outer circumferential surface of the valve body (60). A cylinder port (11) is formed connecting the volume chamber (10) and an inner circumferential surface of the through hole of the cylinder block. The cylinder port (11) is arranged in a position opposite to the supply and discharge port (61). <IMAGE>

IPC 1-7

F01B 3/00; F04B 1/20; F04B 1/22

IPC 8 full level

F01B 3/00 (2006.01); F03C 1/06 (2006.01); F03C 1/24 (2006.01); F03C 1/26 (2006.01); F04B 1/20 (2006.01); F04B 1/22 (2006.01)

CPC (source: EP US)

F01B 3/0035 (2013.01 - EP US); F04B 1/205 (2013.01 - EP US); F04B 1/22 (2013.01 - EP US)

Citation (search report)

Designated contracting state (EPC)

DE FR

DOCDB simple family (publication)

EP 1519006 A1 20050330; EP 1519006 B1 20061220; DE 602004003761 D1 20070201; DE 602004003761 T2 20070405; JP 2005105900 A 20050421; JP 4124716 B2 20080723; US 2005095144 A1 20050505

DOCDB simple family (application)

EP 04023085 A 20040928; DE 602004003761 T 20040928; JP 2003338588 A 20030929; US 95068604 A 20040928