EP 0963506 B1 20020410 - HYDROSTATIC MACHINE PISTON
Title (en)
HYDROSTATIC MACHINE PISTON
Title (de)
KOLBEN FÜR EINE HYDROSTATISCHE MASCHINE
Title (fr)
PISTON POUR MACHINE HYDROSTATIQUE
Publication
Application
Priority
- DE 19706075 A 19970217
- EP 9800551 W 19980202
Abstract (en)
[origin: DE19706075A1] The invention relates to a piston (10) for a hydrostatic machine (1) and a corresponding production method. In a conventional production method of this type, the piston (10) is shaped from a blank (40) into a shank section (42) and a ball and socket joint section (46) connected to the shank section (42) by means of neck section (44). According to the inventive embodiment, an additional blank (41) for an inner tube (41') is inserted into the blank (40) of the outer tube (40') before the latter is shaped. A hollow piston (10) comprising one or more hollow chambers (51, 52) between the inner (41') and the outer (40') tubes is formed after both blanks (40, 41) have been shaped.
IPC 1-7
IPC 8 full level
CPC (source: EP US)
F01B 3/0085 (2013.01 - EP US); F04B 1/124 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB IT SE
DOCDB simple family (publication)
DE 19706075 A1 19980820; DE 19706075 C2 20010517; DE 59803743 D1 20020516; EP 0963506 A1 19991215; EP 0963506 B1 20020410; JP 2001511863 A 20010814; JP 3926397 B2 20070606; US 6237467 B1 20010529; WO 9836156 A1 19980820
DOCDB simple family (application)
DE 19706075 A 19970217; DE 59803743 T 19980202; EP 9800551 W 19980202; EP 98906903 A 19980202; JP 53528398 A 19980202; US 33191899 A 19990629