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1. WO1996002758 - HYDRAULIC AXIAL PISTON MACHINE

Publication Number WO/1996/002758
Publication Date 01.02.1996
International Application No. PCT/DK1995/000279
International Filing Date 30.06.1995
Chapter 2 Demand Filed 05.02.1996
IPC
F04B 1/20 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
1Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
12having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
20having rotary cylinder block
F04B 53/16 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
53Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/-F04B23/ or F04B39/-F04B47/203
16Casings; Cylinders; Cylinder liners or heads; Fluid connections
CPC
F04B 1/2035
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
1Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
12having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
20having rotary cylinder block
2014Details or component parts
2035Cylinder barrels
F04B 1/2042
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
1Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
12having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
20having rotary cylinder block
2014Details or component parts
2042Valves
F04B 53/168
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
53Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
16Casings; Cylinders; Cylinder liners or heads; Fluid connections
162Adaptations of cylinders
166Cylinder liners
168Mounting of cylinder liners in cylinders
F05C 2225/04
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
CINDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
2225Synthetic polymers, e.g. plastics; Rubber
04PTFE [PolyTetraFluorEthylene]
F05C 2253/12
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
CINDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
2253Other material characteristics; Treatment of material
12Coating
Applicants
  • DANFOSS A/S [DK/DK]; DK-6430 Nordborg, DK (AllExceptUS)
  • HANSEN, Ove, Thorbøl [DK/DK]; DK (UsOnly)
Inventors
  • HANSEN, Ove, Thorbøl; DK
Common Representative
  • DANFOSS A/S; Patent Dept. DK-6430 Nordborg, DK
Priority Data
P 44 24 607.213.07.1994DE
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) HYDRAULIC AXIAL PISTON MACHINE
(FR) MACHINE A PISTON AXIAL HYDRAULIQUE
Abstract
(EN)
A hydraulic axial piston machine (1) is disclosed, having a cylinder drum (2), which has at least one cylinder (5) in which a piston (9) is arranged to move back and forth, and having a control plate (3), which on rotation of the cylinder drum (2) and control plate (3) relative to one another connects the cylinder (5), in dependence on its position, to a fluid inlet and a fluid outlet (4), a pressure plate (6) being arranged between the cylinder drum (2) and the control plate (3) and having for each cylinder (5) a fluid path (14) between the control plate (3) and the cylinder drum (2). It is desirable for such a machine to be capable of operation also with a hydraulic fluid that has no or only slight lubricating properties. To that end, the cylinder (5) is lined with a bushing (10) of a friction-reducing plastics material which projects from the cylinder drum (2) and is inserted in the pressure plate (6).
(FR)
L'invention concerne une machine (1) à piston axial hydraulique comportant un tambour (2) à cylindre, lequel présente au moins un cylindre (5) dans lequel un piston (9) est agencé pour effectuer un mouvement de va-et-vient, et présentant une plaque de commande (3), laquelle, lors de la rotation du tambour (2) à cylindre et de la plaque de commande (3) l'une par rapport à l'autre, relie le cylindre (5), en fonction de sa position, à une entrée de fluide ainsi qu'à une sortie (4) de fluide, une plaque d'appui (6) étant agencée entre le tambour (2) à cylindre et la plaque de commande (3) et présentant pour chaque cylindre (5) un chemin (14) de fluide entre ladite plaque de commande (3) et ledit tambour (2) à cylindre. Il est souhaitable de permettre à cette machine de fonctionner également avec un fluide hydraulique ne présentant pas ou que peu de propriétés lubrifiantes. Por ce faire, le cylindre (5) est revêtu d'un manchon (10) en matière plastique réduisant les frottements, lequel dépasse du tambour (2) à cylindre et est inséré dans la plaque d'appui (6).
Also published as
Latest bibliographic data on file with the International Bureau