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US 4,651,768 AGranted
Servovalve for pipe flange connection
OwnerAlfred Epeinventor
Life of this patent
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OwnerAlfred Epeinventor
Estimating the term…
The flow controlling valve, particularly mounted in a pipe flange structure, comprises a cylindrical housing, a flow passage whose cross section is controllable, a valve seat, and a valve member and at least one auxiliary valve mounted in the housing. The valve seat is formed as a mushroom member whose mushroom head has an edge with an adjacent seating surface and whose stem is connected to at least one supporting cross piece extending across the flow passage. The valve member is a spring-loaded hollow piston guided in the housing whose interior space forms the flow passage which is mounted with its inner edge positionable on the seating surface of the mushroom head. The auxiliary valve has a spring-loaded auxiliary stopper member with an associated auxiliary valve seat which controls a flowing medium branching from the main flow by a metering element. The mushroom member is connected with its mushroom stem on a supporting cross piece or pieces which is or are elastically deformable and an outer section of the hollow piston forms a circular gap between it and the housing which serves as the metering element.
In a flow control servovalve, particularly for mounting in a pipe flange structure, comprising a housing, a flow passage whose cross section is controllable, a valve seat, a valve member and at least one auxiliary valve mounted in said housing, wherein said valve seat is formed as a mushroom member whose mushroom head has an edge with an adjacent seating surface and whose stem is connected to at least one supporting cross piece extending across said flow passage, wherein said valve member is a spring-loaded hollow piston guided in said housing whose interior space forms said flow passage and which is mounted with its inner edge positionable on said seating surface of said mushroom head, and wherein said auxiliary valve has a spring-loaded auxiliary stopper member with an associated auxiliary valve seat which controls a flowing medium branching from the main flow by a metering element, the improvement wherein:
The improvement according to claim 2 wherein said hollow piston has said outer section forming said metering element in the vicinity of an inner shoulder of said hollow piston and said outer section is provided with a circumferential toothed profile.
A flow control servovalve, particularly mounted in a pipe flange structure, comprising:
An in-line flow-control valve insertable between flanges of a pipeline, said flow-control valve comprising:
Dependencies are inferred from the claim text.