Patent ID: 7681597
Filing Date: 2010-03-23
Classification: G05D,Y10T

Abstract:
1. A device for dynamic flow regulation comprising in one body a feed chamber, a discharge chamber, a piston which is disposed between the feed chamber and the discharge chamber and which is exposed on one side to the pressure of the feed chamber and on the other side to the pressure of the discharge chamber, the piston being displaceable between a first position, which is offset toward the feed chamber, the piston narrowing the flow between the feed chamber and discharge chamber in the first position, and a second position, which is offset toward the discharge chamber, the piston not narrowing the flow between the feed chamber and the discharge chamber in the second position, and a recuperating spring that acts on the piston toward the first position, wherein the piston is penetrated by a passage extending from the feed chamber to the discharge chamber, that a flow limiting means provides a reduced resistance to the flow passing through the passage provided that the flow does not exceed a maximum flow, and that the recuperating spring is dimensioned such that its effect substantially corresponds to the force that tends to displace the piston from the first position into the second position when the maximum flow allowed by the flow limiting means is withdrawn.