Patent ID: 6010112
Filing Date: 2000-01-04
Classification: F15B,F16K

Abstract:
A driving device for operating a shut-off device to be employed in a pipeline, said driving device comprising:a piston/cylinder unit including a cylinder, and a piston connectable to a slide valve plate of the shut-off device, said piston being movable within said cylinder and dividing an interior thereof into a working chamber and a displacement chamber;said piston/cylinder unit having a cylinder head having therein an opening that opens into said working chamber and a chamber that connects to said opening;a closing valve on said cylinder head and having a valve disc operable to close connection of said chamber to said opening; anda pressure medium reservoir having an outlet opening connected to said chamber such that pressure medium from said reservoir arrives from said reservoir into said chamber, whereby upon opening of said valve disc the pressure medium passes virtually directly to said opening and into said working chamber, resulting in said piston closing the slide valve plate in a very short period of time.