Global Patent Index - EP 0943798 A3

EP 0943798 A3 2000-06-28 - Axial piston machine with hydrostatic relief of the cylinder bores

Title (en)

Axial piston machine with hydrostatic relief of the cylinder bores

Title (de)

Axialkolbenmaschine mit hydrostatischer Entlastung der Zylinderbohrungen

Title (fr)

Machine axiale à pistons avec compensation hydrostatique des alésages des cylindres

Publication

EP 0943798 A3 (DE)

Application

EP 99105278 A

Priority

  • DE 19811312 A
  • DE 19815614 A

Abstract (en)

[origin: EP0943798A2] The axial piston machine has a drum (6) rotating round an axis (47), with cylinders (26) in which pistons (29) supported by a swash plate (3) move. The bore walls have recesses for the hydraulic relief of the sliding motion of the pistons in the cylinders, in the form of elongated relief grooves running spirally or in a zigzag. Alternatively, the borings may be of oval cross section and the pistons of circular cross section, forming intermediate relief cavities

IPC 1-7 (main, further and additional classification)

F04B 1/20; F01B 3/00; F04B 53/16

IPC 8 full level (invention and additional information)

F01B 3/00 (2006.01); F04B 1/20 (2006.01)

CPC (invention and additional information)

F04B 1/2007 (2013.01); F01B 3/0041 (2013.01)

Citation (search report)

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

EP 0943798 A2 19990922; EP 0943798 A3 20000628; EP 0943798 B1 20040818

INPADOC legal status


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2005-08-10 [26N] NO OPPOSITION FILED

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2005-06-03 [ET] FR: TRANSLATION FILED

2004-12-14 [REG SE TRGR] TRANSLATION OF GRANTED EP PATENT

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- Document: DE 59910234 P 20040923

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2000-06-28 [RIC1] CLASSIFICATION (CORRECTION)

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