EP 0935715 A1 19990818 - DEVICE FOR HOLDING IN POSITION THE ROD OF A PRESSURE CYLINDER
Title (en)
DEVICE FOR HOLDING IN POSITION THE ROD OF A PRESSURE CYLINDER
Title (de)
HALTEVORRICHTUNG EINER HYDRAULISCHEN ARBEITSZYLINDERSTANGE
Title (fr)
DISPOSITIF DE MAINTIEN EN POSITION DE LA TIGE D'UN VERIN HYDRAULIQUE
Publication
Application
Priority
- FR 9701994 W 19971106
- FR 9613778 A 19961107
Abstract (en)
[origin: US5913810A] The maintenance device consists of a hydraulic insulation unit (2) mounted between the supply circuits of a cylinder (1). The insulation unit (2) comprises a sluice (9) which has, at each of its two openings, an anti-return valve, one of which, the primary valve (11) is hydraulically connected to the outlet chamber (6) of the shaft (7) of the cylinder (1) and opens toward said chamber; and a safety valve (13) opening in the same direction, with the latter valve closing at a different rate than the primary valve closes. The invention is useful for maintaining the shaft of any cylinder in position, particularly a charged cylinder, and it is of interest to manufacturers of hydraulic devices, particularly lifting cylinders, as well as those who use them.
IPC 1-7
IPC 8 full level
F15B 13/01 (2006.01)
CPC (source: EP US)
F15B 13/01 (2013.01 - EP US)
Citation (search report)
See references of WO 9820260A2
Designated contracting state (EPC)
AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
US 5913810 A 19990622; AT E258274 T1 20040215; CA 2270579 A1 19980514; CN 1103411 C 20030319; CN 1244236 A 20000209; DE 69727307 D1 20040226; DE 69727307 T2 20041118; EP 0935715 A1 19990818; EP 0935715 B1 20040121; ES 2216132 T3 20041016; FR 2755481 A1 19980507; FR 2755481 B1 19981224; RU 2191298 C2 20021020; UA 46875 C2 20020617; WO 9820260 A2 19980514; WO 9820260 A3 20021003
DOCDB simple family (application)
US 96618697 A 19971107; AT 97913266 T 19971106; CA 2270579 A 19971106; CN 97199511 A 19971106; DE 69727307 T 19971106; EP 97913266 A 19971106; ES 97913266 T 19971106; FR 9613778 A 19961107; FR 9701994 W 19971106; RU 99112128 A 19971106; UA 99063105 A 19971106