Patents by Inventor Anders Ib Damborg Petersen

Anders Ib Damborg Petersen 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).

  • Pressure relief valve for pressure equalization between a closed space and the surrounding atmosphere
    Patent number: 5873384
    Abstract: A pressure relief valve includes a valve housing and a drop-shaped body with a conical valve surface that cooperates with a conical valve seat at an upwardly directed blow-off opening of the valve housing. The drop-shaped body is connected to a lifting disc in the housing. The inner configuration of the housing provides an annular passage around the lifting disc which is smaller in area when the lifting disc (and drop-shaped body) is in its uppermost, fully open positioning as compared to its lowermost, closed positioning.
    Type: Grant
    Filed: December 30, 1996
    Date of Patent: February 23, 1999
    Assignee: Emil Aarestrup S.o slashed.rensen
    Inventors: Hans-Henrik Raagaard Pedersen, Anders Ib Damborg Petersen
  • Pressure relief valve for pressure equalization between a closed space and the surrounding atmosphere
    Patent number: RE37989
    Abstract: A pressure relief valve includes a valve housing and a drop-shaped body with a conical valve surface that cooperates with a conical valve seat at an upwardly directed blow-off opening of the valve housing. The drop-shaped body is connected to a lifting disc in the housing. The inner configuration of the housing provides an annular passage around the lifting disc which is smaller in area when the lifting disc (and drop-shaped body) is in its uppermost, fully open positioning as compared to its lowermost, closed positioning.
    Type: Grant
    Filed: January 4, 2001
    Date of Patent: February 18, 2003
    Inventors: Hans-Henrick Raagaard Pedersen, Anders Ib Damborg Petersen