Hydraulic pressing device and method for operating the same
AssigneeGustav Klauke GmbH
InventorEgbert Frenken
Life of this patent
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Abstract
A method for operating a hydraulic pressing device, for example, a pipe clamping device, that includes a stationary part and a moving part. The hydraulic pressing device also includes an automatically actuating return valve. The moving part of the hydraulic pressing device is displaced relative to the stationary part until a predetermined pressure is reached. At that point, the moving part returns automatically and completely back into its initial position, which is released as a result of the predetermined pressure being reached. The moving part is biased into its initial position by means of a return spring and, on removal of the restoring force, returns automatically back into its initial, closed condition.
Claims2
Method for operating a hydraulic pressing device comprising a stationary part, a v=moving part and a return valve, wherein the moving part is displaceable starting from a initial position relative to the stationary part against action of a return spring acting on the moving part, until a predetermined pressure acting on the moving part is reached, said method comprising:
- opening the return valve when the predetermined pressure is reached;
- and the moving part completely back into the initial position as a result of opening the return valve.
Method for operating a hydraulic pressing device comprising a stationary part, a moving part and a automatically returning return valve, the moving part being biased into an initial position by means of a return spring, and the return valve having an initial, closed condition, said method comprising:
- opening the return valve during a return stroke of the moving part;
- holding open the return valve using the force of the return spring;
- removing the force of the return spring;
- and returning the return valve back to its initial, closed condition as a result of opening the return valve.
Dependencies are inferred from the claim text.