EP 1435461 A1 20040707 - Pneumatic cylinder with cushioning means
Title (en)
Pneumatic cylinder with cushioning means
Title (de)
Pneumatikzylinder mit Dämpfungsmitteln
Title (fr)
Vérin pneumatique avec dispositif d'amortissement
Publication
Application
Priority
DE 10261412 A 20021230
Abstract (en)
A pneumatic cylinder comprising a cylinder tube (1), a piston (3) sliding within the cylinder tube (1), at least one piston packing ring (13a;13b) disposed on the outer peripheral surface of the piston (3) for defining at least one pressure chamber (6a;6b), at least one port (5a;5b) for supplying and discharging compressed air to and from said pressure chamber (6a;6b) separated by the piston (3), a respective air outlet (7a;7b) for communicating with the pressure chamber (6a;6b) associated with a port (5a;5b) and positioned with an axial cushioning distance (X) to the end of the cylinder tube (1), cushioning means for stopping the piston (3) in a cushioning manner by restraining the discharged air flow from the pressure chamber (6a;6b), wherein said cushioning means comprise at least one piston channel (9a;9b) with a cushioning nozzle (8a;8b) arranged in the piston (3) in order to discharge compressed air within the pressure chamber (6a;6b) only through the cushioning nozzle (8a;8b) when the piston packing ring (13a;13b) passes over the air outlet (7a;7b) on the discharge side just before the piston (3) reaches the end of its stroke, wherein furthermore the piston channel (9a;9b) connects the pressure chamber (6a;6b) with the air outlet (7a;7b). <IMAGE>
IPC 1-7
IPC 8 full level
F15B 15/22 (2006.01)
CPC (source: EP)
F15B 15/224 (2013.01)
Citation (search report)
- [XY] US 6186043 B1 20010213 - CALLIES ROBERT EDWIN [US]
- [X] DE 29700256 U1 19970313 - SCHAEFF KARL GMBH & CO [DE]
- [X] US 3592106 A 19710713 - BAUGHMAN GAYLORD G
- [X] US 3626812 A 19711214 - TRICK ROBERT E
- [AY] US 3961564 A 19760608 - RICH BELDON R, et al
- [AY] US 4455923 A 19840626 - MUELLER RICHARD [DE]
- [AY] US 4257499 A 19810324 - DESCHNER RICHARD E
- [AY] US 5193433 A 19930316 - REIMER JENS [SE]
- [AY] DE 19903511 A1 20000803 - ZAHNRADFABRIK FRIEDRICHSHAFEN [DE]
- [AY] US 6279451 B1 20010828 - HIRANO AKIHIRO [JP], et al
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR
DOCDB simple family (publication)
DOCDB simple family (application)
EP 03104805 A 20031218; DE 10261412 A 20021230