EP 1971775 A1 20080924 - HYDRAULIC MACHINE, IN PARTICULAR HYDRAULIC MOTOR, WITH A RECIPROCATING MOVEMENT, AND DIFFERENTIAL PISTON FOR SUCH A MACHINE
Title (en)
HYDRAULIC MACHINE, IN PARTICULAR HYDRAULIC MOTOR, WITH A RECIPROCATING MOVEMENT, AND DIFFERENTIAL PISTON FOR SUCH A MACHINE
Title (de)
HYDRAULISCHE MASCHINE, INSBESONDERE HYDROMOTOR, MIT EINER HUBBEWEGUNG UND DIFFERENZIALKOLBEN FÜR SOLCH EINE MASCHINE
Title (fr)
MACHINE HYDRAULIQUE, EN PARTICULIER MOTEUR HYDRAULIQUE, A MOUVEMENT ALTERNATIF, ET PISTON DIFFERENTIEL POUR UNE TELLE MACHINE
Publication
Application
Priority
- FR 2006002675 W 20061207
- FR 0600313 A 20060113
Abstract (en)
[origin: WO2007080251A1] Hydraulic machine, in particular hydraulic motor, comprising a casing, a differential piston (4) having a region of large cross section and a region of smaller cross section, which can slide with a reciprocating movement respectively in the casing and in a housing coaxial to, and of smaller diameter than, the casing, the piston separating two chambers of the casing and being provided at the location of its large cross section and its small cross section with sealing lips (48, 49) which are oriented in opposite directions and which face one another. The sealing lips (48, 49) are provided on detachable circular rings (50, 51), and the piston (4) is moulded in one piece.
IPC 8 full level
F04B 9/107 (2006.01); F04B 9/105 (2006.01); F04B 13/02 (2006.01); F04B 49/10 (2006.01)
CPC (source: EP US)
F03C 1/26 (2013.01 - EP US); F04B 5/00 (2013.01 - EP US); F04B 9/107 (2013.01 - EP US); F04B 53/02 (2013.01 - EP US); F04B 53/22 (2013.01 - EP US)
Citation (search report)
See references of WO 2007080251A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
FR 2896280 A1 20070720; AT E480711 T1 20100915; DE 602006016868 D1 20101021; EP 1971775 A1 20080924; EP 1971775 B1 20100908; ES 2352353 T3 20110217; US 2010269685 A1 20101028; US 8136441 B2 20120320; WO 2007080251 A1 20070719
DOCDB simple family (application)
FR 0600313 A 20060113; AT 06841882 T 20061207; DE 602006016868 T 20061207; EP 06841882 A 20061207; ES 06841882 T 20061207; FR 2006002675 W 20061207; US 16043106 A 20061207