EP 0524437 A1 19930127 - Hydraulic piston motor.
Title (en)
Hydraulic piston motor.
Title (de)
Flüssigkeitskolbenmotor.
Title (fr)
Moteur hydraulique à piston.
Publication
Application
Priority
SE 9101950 A 19910625
Abstract (en)
Hydraulic piston motor comprising a housing, at least one cam disk with an internal cam curve (8), at least one cylinder block (6) with a number of cylinders (5), and so-called roller cage pistons, running in said cylinders. According to the invention each roller cage piston consists of a roller cage part (2) and a piston part (3) forming an integral unit. The roller cage part is formed as a hydrostatic bearing with a bearing surface which is in the form of a cylindrical segment and is adapted to rollers running against said cam curve (8). At its inner end the piston part is formed with two flanges (19, 20) with an intermediate piston ring slot (21). Those surfaces of the flanges which are facing the cylinder wall together exhibit a double-curved convex surface, which allows an angular deviations, of the order of magnitude of 1 DEG , between the cylinder (5) and the roller cage piston (1). A seal is arranged in the piston ring slot. <IMAGE> <IMAGE>
IPC 1-7
IPC 8 full level
F03C 1/047 (2006.01); F04B 1/04 (2006.01)
CPC (source: EP)
F03C 1/047 (2013.01); F04B 1/0408 (2013.01)
Citation (search report)
- [X] FR 2358566 A1 19780210 - CYPHELLY IVAN J [CH]
- [X] FR 2215543 A1 19740823 - HITACHI CONSTRUCTION MACHINERY [JP]
- [YD] EP 0102915 A2 19840314 - HAEGGLUND & SOENER AB [SE]
- [YD] WO 8701783 A1 19870326 - FLUTRON AB [SE]
- [Y] US 3978771 A 19760907 - BURNIGHT THOMAS R, et al
Designated contracting state (EPC)
DE FR GB IT NL
DOCDB simple family (publication)
EP 0524437 A1 19930127; EP 0524437 B1 19960605; DE 69211238 D1 19960711; DE 69211238 T2 19970123; SE 503563 C2 19960708; SE 9101950 D0 19910625; SE 9101950 L 19921226
DOCDB simple family (application)
EP 92110445 A 19920620; DE 69211238 T 19920620; SE 9101950 A 19910625