EP 0433955 B1 19931110 - Fluid actuator with locking means.
Title (en)
Fluid actuator with locking means.
Title (de)
Verriegelbarer Hydraulikzylinder.
Title (fr)
Vérin hydraulique muni d'un mécanisme de blocage.
Publication
Application
Priority
DE 3942348 A 19891221
Abstract (en)
[origin: EP0433955A1] A fluid actuator with locking means has a housing (1) with at least one pressure connection (7), a displaceable working piston (3) guided in a sealed manner in the housing (1) and having a piston rod (6), a locking piston (11) supported on a locking spring (35), and a ball locking mechanism (23) having balls (25) which can be moved radially in a cage - in the locking position into a locking groove (26) and in the release position into an escape groove (22). The working piston (3) can be acted upon adjacently to a working space (18) on an effective working surface (19) and the locking piston (11) can be acted upon adjacently to a release space (13) on an effective releasing surface (14), via the pressure connection (7). Provided between the pressure connection (7) and the working space (18) of the working piston (3) is a restrictor (17) with a restricting function which can be switched off with a time delay, whereas the release space (13) of the locking piston (11) can be acted upon without restriction via the pressure connection (7), with the result that, upon pressurisation via the pressure connection (7), the locking piston (11) leaves the locking position first of all and only then does the pressure build-up in the working space (18) take place.
IPC 1-7
IPC 8 full level
F15B 15/26 (2006.01)
CPC (source: EP US)
F15B 15/261 (2013.01 - EP US)
Designated contracting state (EPC)
BE DE ES FR GB IT NL
DOCDB simple family (publication)
EP 0433955 A1 19910626; EP 0433955 B1 19931110; DE 3942348 A1 19910627; DE 3942348 C2 19921015; DE 59003465 D1 19931216; ES 2046660 T3 19940201; JP H04113006 A 19920414; US 5097748 A 19920324
DOCDB simple family (application)
EP 90124490 A 19901218; DE 3942348 A 19891221; DE 59003465 T 19901218; ES 90124490 T 19901218; JP 40493790 A 19901221; US 63135390 A 19901220