EP 1030065 B1 20040922 - Fluid power cylinder with fluid locking
Title (en)
Fluid power cylinder with fluid locking
Title (de)
Druckmittelbetriebener Arbeitszylinder mit fluidischer Wegsperrung
Title (fr)
Vérin avec verrouillage fluidique
Publication
Application
Priority
DE 29902773 U 19990217
Abstract (en)
[origin: EP1030065A1] The cylinder consists of a double-wall cylinder tube (1) with flow grooves, a guide part (2), a bottom closing part (3) and a piston rod (6) with piston (7) between a piston cavity (31) and an annular piston cavity (32). The bottom closing part contains a control cylinder cavity (8) with a control piston (15) kept in the blocking middle position by springs (13, 14) on either side.The unpressurized fluid in the piston cavities blocks the movement of the piston and its rod. When pressure is applied, the system is unblocked.
IPC 1-7
IPC 8 full level
F15B 13/01 (2006.01); F15B 15/20 (2006.01); F15B 15/26 (2006.01); F15B 20/00 (2006.01)
CPC (source: EP)
F15B 15/26 (2013.01); F15B 20/004 (2013.01)
Designated contracting state (EPC)
AT DE FR GB IT NL
DOCDB simple family (publication)
EP 1030065 A1 20000823; EP 1030065 B1 20040922; AT E277289 T1 20041015; DE 29902773 U1 19990512; DE 50007829 D1 20041028
DOCDB simple family (application)
EP 00100096 A 20000107; AT 00100096 T 20000107; DE 29902773 U 19990217; DE 50007829 T 20000107