Patent ID: 7343845
Filing Date: 2008-03-18
Classification: F15B,G05D,Y10T

Abstract:
1. A fluid operated position regulator for power devices comprising a regulator housing, in which at least one servo means, which is able to be shifted by controlled fluid actuation with the performance of a positioning movement, is arranged, said servo means being able, in a fashion dependent on its position, to place, in different manners, a supply connection, a venting connection and a power connection provided for the connection of the power device, in a fluid circuit with each other, wherein for setting its position the servo means has two fluid actuating faces facing in opposite directions of the servo motion and of equal effective sizes, each such fluid actuating face delimiting a control chamber and the two control chambers being provided with a common control pressure connection with which they are respectively connected for fluid flow by way of an intermediately placed choke means and the two control chambers are connected downstream from the respectively associated choke means with a venting connection, said two venting connections being provided with an electrically actuated control valve means, said control valve means constituting a single structural unit with the regulator housing and being able to respectively selectively open or close the two venting connections, such closing being adapted to simultaneously close of both venting connections.