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1. WO1996002754 - PISTON/SLIDE SHOE ARRANGEMENT

Publication Number WO/1996/002754
Publication Date 01.02.1996
International Application No. PCT/DK1995/000274
International Filing Date 28.06.1995
Chapter 2 Demand Filed 05.02.1996
IPC
F04B 1/12 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
CPC
F04B 1/124
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
122Details or component parts, e.g. valves, sealings or lubrication means
124Pistons
F04B 1/126
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
122Details or component parts, e.g. valves, sealings or lubrication means
124Pistons
126Piston shoe retaining means
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)
  • JEPSEN, Hardy, Peter [DK/DK]; DK (UsOnly)
  • KRISTENSEN, Egon [DK/DK]; DK (UsOnly)
  • MARTENSEN, Lars [DK/DK]; DK (UsOnly)
Inventors
  • JEPSEN, Hardy, Peter; DK
  • KRISTENSEN, Egon; DK
  • MARTENSEN, Lars; DK
Common Representative
  • DANFOSS A/S; Patent Dept. DK-6430 Nordborg, DK
Priority Data
P 44 24 672.213.07.1994DE
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) PISTON/SLIDE SHOE ARRANGEMENT
(FR) AGENCEMENT DE PISTON/PATIN COULISSANT
Abstract
(EN)
A piston/slide shoe arrangement (1) of a hydraulic piston machine is disclosed, having a slide shoe (6), which is in articulated connection with a piston (4), with a friction-reducing plastics material (11) therebetween, wherein the plastics material, forming a channel (13), extends into a through-opening (12) in the slide shoe in a direction towards a sliding contact surface (7) of the slide shoe, which surface in operation lies against a swash plate (8). In such an arrangement, it is desirable when operating under adverse conditions to prevent the plastics material working its way out from the space between the piston and the slide shoe. For that purpose, the slide shoe (6) and the plastics material (11) are provided outside the through-opening (12) with at least one connecting element (16, 18) which takes up shear forces between slide shoe (6) and plastics material (11).
(FR)
L'invention concerne un agencement (1) de piston/patin coulissant d'une machine à piston hydraulique présentant un patin coulissant (6), lequel est relié articulé à un piston (4), entre lesquels se trouve une matière plastique (11) réduisant les frottements, ladite matière plastique, laquelle forme un canal (13), s'étend jusque dans une ouverture de passage (12) se trouvant dans le patin coulissant vers une surface de contact coulissante (7) du patin coulissant, laquelle surface, lors de son fonctionnement, repose contre un plateau cyclique (8). Par cet agencement l'on cherche, lors d'un fonctionnement dans des conditions difficiles, à empêcher la matière plastique de sortir de l'espace située entre le piston et le patin coulissant. Pour ce faire, le patin coulissant (6) et la matière plastique (11) sont dotés, à l'extérieur de l'ouverture de passage (12), d'au moins un élément de connexion (16, 18) absorbant les forces de cisaillement entre ledit patin coulissant (6) et la matière plastique (11).
Also published as
Latest bibliographic data on file with the International Bureau