Abstract: The present invention relates to a pressure control valve including a valve housing which houses a valve seat in a housing opening, a valve closure member which is movable into abutment on the valve seat and adapted to interconnect or isolate pressure fluid channels connected to the valve seat, a bore in a guide element for the accommodation of the valve closure member which is axially movably supported on the wall of the valve housing. The valve closure member is attached in the guide element by way of a simplified press fit in conformity with the demands of automation. The assembly of the valve coil is simplified in addition.

Abstract: A device and a method for remote maintenance of an electronically controllable prosthesis (1) are provided. The prosthesis comprises a controller in which operating and/or movement data characterizing the prosthesis are detected and are then transmitted to a remote maintenance device (20) with a storage and evaluation unit (20). Remote maintenance of the prosthesis using the detected data is possible via a remotely located remote control unit (23) that can access the storage and evaluation unit via the telephone network. Corrected operational data are transmitted from the storage and evaluation unit (20 back to the controller of the prosthesis.

Abstract: The present invention relates to a pressure control valve which includes a valve tappet that is guided in a valve housing and accommodates a compression spring, and a valve closure member which is shaped on the valve tappet and corresponds with a valve seat establishes a connection between a pressure supply conduit extending from a pressure fluid source and a pressure return line when the pressure reaches a defined preset nominal value. To reduce operating noises of the valve tappet, at least one polygonal friction element which engages with the valve tappet is movable into abutment on radial friction surfaces of the valve tappet.

Abstract: A locking and opening device for an injection moulding die, particularly for processing highly liquid melted plastic material, provides a technically simple, low cost mechanism to lock the die and limit elements located above workbench level or mould level, when the device is arranged vertically. To achieve this, clamping pins hold one moulding die in a closed position in relation to an overlying moulding die and which can be axially displaced into a closed or open position by means of a sliding element associated with each clamping pin.

Abstract: The contaminated soil is first treated by spreading a nutrient for aerobic microbial flora of the N/P type in oleophilic form, then by the addition of straw and of a hydrophilic nutrient of the N/P/K type which are buried by mechanical mixing. A biological process takes place which brings the hydrocarbon content below 500 mg/kg of soil after some months. The oleophilic nutrient N/P is preferably a microemulsion of a solution of N/P salts in a fat-soluble hydrocarbon solvent.