Patents by Inventor Aloys Quatmann

Aloys Quatmann has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 9080923
    Abstract: Method for checking the leakproffness of safety valves. Method for testing the leadkproofness of two controllable valves (V1, V2), wherein the vales are arranged at opposite ends of a test volume (10). An inlet pressure pe is present upstream of the test volume, in front of valve V1, and an outlet pressure pa is present downstream of the test volume, behind the valve V2. A control device controls the valves to open and close, and the control device is coupled to at least two pressure switches (26, 27) which are both operatively connected to the test volume (10) in order to monitor the pressure. The first pressure switch is set to a first triggering threshold d1, wherein d1=pe/x, where x>3. The second pressure switch is set to a second triggering threshold d2, wherein d2=pe(1?1/x). A valve is controlled in order to open the valve for a period of time tL1 and then to close said valve. The process then waits for a measurement period tM1 and a first pressure switch is checked.
    Type: Grant
    Filed: June 26, 2012
    Date of Patent: July 14, 2015
    Assignee: Elster GmbH
    Inventors: Aloys Quatmann, Ulrich Engelmann, Oliver Borgmann
  • Publication number: 20140174158
    Abstract: Method for checking the leakproffness of safety valves. Method for testing the leadkproofness of two controllable valves (V1, V2), wherein the vales are arranged at opposite ends of a test volume (10). An inlet pressure pe is present upstream of the test volume, in front of valve V1, and an outlet pressure pa is present downstream of the test volume, behind the valve V2. A control device controls the valves to open and close, and the control device is coupled to at least two pressure switches (26, 27) which are both operatively connected to the test volume (10) in order to monitor the pressure. The first pressure switch is set to a first triggering threshold d1, wherein d1=pe/x, where x>3. The second pressure switch is set to a second triggering threshold d2, wherein d2=pe(1?1/x). A valve is controlled in order to open the valve for a period of time tL1 and then to close said valve. The process then waits for a measurement period tM1 and a first pressure switch is checked.
    Type: Application
    Filed: June 26, 2012
    Publication date: June 26, 2014
    Applicant: Elster GmbH
    Inventors: Aloys Quatmann, Ulrich Engelmann, Oliver Borgmann