EP 1074750 A2 20010207 - Pressure fluid actuator with damping and speed control device
Title (en)
Pressure fluid actuator with damping and speed control device
Title (de)
Druckmittelzylinder mit Enddämpfung und Geschwindigkeitssteuervorrichtung
Title (fr)
Vérin à fluide avec amortissement et dispositif de réglage de vitesse
Publication
Application
Priority
IT MI991751 A 19990804
Abstract (en)
The pressure fluid actuator (10) comprises a tubular body (11) and closing heads (12,13) to define a piston chamber (14) in which a piston (15) may reciprocate. The piston (15), at both ends, is provided with a damping bush (25) which may protrude into a flow damping chamber (18,19) in each closing head (12,13) connected to a fluid inlet/outlet port (16,17); a conduit (25A) comprising a flow throttling valve (23) is branched between each side of the piston chamber (14) and the damping chamber (18,19) in each closing head (12,13). The flow damping bush (25) comprises a longitudinally extending fluid supply duct (32) provided with a pressure actuated unidirectional flow control valve (30,32) which prevent the pressure fluid to flow from the piston chamber (14) into the damping chamber (18,19) during damping at the end of a piston stroke, while allowing flow circulation into the piston chamber (14) when the bush (25) is within the damping chamber (18,19) at the beginning of a piston stroke. <IMAGE>
IPC 1-7
IPC 8 full level
F15B 15/22 (2006.01)
CPC (source: EP)
F15B 15/222 (2013.01); F15B 15/223 (2013.01)
Citation (applicant)
- EP 0005407 A1 19791114 - CLIMAX FRANCE SA [FR]
- EP 0082829 A1 19830629 - MECMAN AB [SE]
- EP 0648941 A1 19950419 - MIGLIORI LUCIANO [IT]
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
EP 1074750 A2 20010207; EP 1074750 A3 20030604; CA 2314958 A1 20010204; IT 1313145 B1 20020617; IT MI991751 A0 19990804; IT MI991751 A1 20010204
DOCDB simple family (application)
EP 00116651 A 20000802; CA 2314958 A 20000803; IT MI991751 A 19990804