EP 0284460 A1 19880928 - Pressurised fluid mechanism, pump or engine, with several displacement volumes.

Title (en)

Pressurised fluid mechanism, pump or engine, with several displacement volumes.

Title (de)

Druckflüssigkeitsmechanismus, Pumpe oder Motor mit mehreren Verdrängungsvolumen.

Title (fr)

Mécanisme à fluide sous pression, moteur ou pompe, à plusieurs cylindrées.

Publication

EP 0284460 A1 19880928 (FR)

Application

EP 88400431 A 19880224

Priority

FR 8702509 A 19870225

Abstract (en)

[origin: US4898076A] The invention relates to a pressurized fluid mechanism comprising a plurality of pistons (14) and a plurality of different cylinder capacities. A particular cylinder capacity is selected by means of two identical slide valves (17, 18) which serve selectively to neutralize either a first overall cylinder capacity (45a) or a second overall cylinder capacity (45c), or both or neither of said first and second cylinder capacities. One application of the invention is to providing an efficient and compact motor which is cheap to produce.

Abstract (fr)

L'invention est relative à un mécanisme à fluide sous pression à plusieurs pistons (14) et à plusieurs cylindrées. La sélection des cylindrées est obtenue au moyen de deux tiroirs identiques (17) et (18) qui permettent de neutraliser au choix, ou une première cylindrée globale (45a), ou une deuxième cylindrée globale (45c), ou encore de ne neutraliser aucune de ces deux cylindrées. Une application est la réalisation d'un moteur efficace, peu encombrant et ayant un petit prix de revient.

IPC 1-7

F03C 1/04

IPC 8 full level

F03C 1/24 (2006.01); F03C 1/247 (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)

Citation (search report)

[AD] FR 2481755 A1 19811106 - POCLAIN HYDRAULICS SA [FR]
[AD] FR 2127268 A5 19721013 - POCLAIN SA
[A] GB 2055987 A 19810311 - PARTEK AB

Designated contracting state (EPC)

DE GB

DOCDB simple family (publication)

EP 0284460 A1 19880928; EP 0284460 B1 19901128; DE 3861148 D1 19910110; FI 880881 A0 19880225; FI 880881 A 19880826; FR 2611816 A1 19880909; FR 2611816 B1 19890713; JP S63227965 A 19880922; US 4898076 A 19900206

DOCDB simple family (application)

EP 88400431 A 19880224; DE 3861148 T 19880224; FI 880881 A 19880225; FR 8702509 A 19870225; JP 3766088 A 19880222; US 15536288 A 19880212