EP 1679284 B1 20080702 - Telescopic lifting column
Title (en)
Telescopic lifting column
Title (de)
Teleskopische Hebesäule
Title (fr)
Colonne de levage téléscopique
Publication
Application
Priority
EP 05075090 A 20050111
Abstract (en)
[origin: EP1679284A1] The invention relates to a telescopic lifting column (1). The lifting column (1) comprises a plurality of tube bodies (2,3,4) which are arranged concentrically inside one another and are axially movable in each case with respect to each other. Furthermore, the lifting column (1) comprises a hydraulic actuator unit (20) which is arranged in the tube bodies (2,3,4) so as to be operating in the axial direction. The hydraulic actuator unit (20) comprises a first hydraulic cylinder-piston unit (30) and a second hydraulic cylinder-piston unit (40) connected with the first (30), the first cylinder-piston unit (30) being connected to a first end of the telescopic lifting column (1) and the second cylinder-piston unit (40) being connected to a second end of the telescopic lifting column (1). The first cylinder-piston unit (30) is of the type having a first variable operating chamber (36) and a second variable operating chamber (37). The second cylinder-piston unit (40) is of the type having a single variable operating chamber (47) which is in communication with the second operating chamber (37) of the first cylinder-piston unit (30).
IPC 8 full level
B66F 3/28 (2006.01); F15B 11/036 (2006.01); F15B 15/14 (2006.01); F15B 15/16 (2006.01)
CPC (source: EP)
B66F 3/28 (2013.01); F15B 15/1404 (2013.01)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
EP 1679284 A1 20060712; EP 1679284 B1 20080702; AT E399738 T1 20080715; DE 602005007849 D1 20080814; DK 1679284 T3 20081020
DOCDB simple family (application)
EP 05075090 A 20050111; AT 05075090 T 20050111; DE 602005007849 T 20050111; DK 05075090 T 20050111