Patents by Inventor Wilbert Leonard Porter

Wilbert Leonard Porter 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).

  • Force balancing capacitance manometer
    Patent number: 6412349
    Abstract: An apparatus for measuring the differential pressure between at least two fluids including (a) first and second pressure enclosures; (b) first and second pressure deformable members where the first deformable member is sealingly connected to the first pressure enclosure and second deformable member is sealingly connected to the second pressure enclosure and the pressure deformable members are rigidly linked so as to move as one unit; (c) a frame for locating the first and second pressure enclosures in fixed relationship to one another; (d) a position sensing device for determining the displacement of the pressure deformable members relative to the frame; (e) a force balancing device including a first portion rigidly connected to the frame and a moveable second portion connected to the pressure deformable members; (f) a transducer for transducing the displacement of the first and second pressure deformable members into a force acting on the moveable second portion of the force balancing device in a direction t
    Type: Grant
    Filed: March 26, 1999
    Date of Patent: July 2, 2002
    Assignee: Helix Technology Corporation
    Inventors: Daniel Granville Bills, Wilbert Leonard Porter
  • Force balancing capacitance manometer
    Patent number: 5902932
    Abstract: An apparatus for measuring the differential pressure between at least two fluids including (a) first and second pressure enclosures; (b) first and second pressure deformable members where the first deformable member is sealingly connected to the first pressure enclosure and second deformable member is sealingly connected to the second pressure enclosure and the pressure deformable members are rigidly linked so as to move as one unit; (c) a frame for locating the first and second pressure enclosures in fixed relationship to one another; (d) a position sensing device for determining the displacement of the pressure deformable members relative to the frame; (e) a force balancing device including a first portion rigidly connected to the frame and a moveable second portion connected to the pressure deformable members; and (f) a transducer for transducing the displacement of the first and second pressure deformable members into a force acting on the moveable second portion of the force balancing device in a directi
    Type: Grant
    Filed: January 9, 1998
    Date of Patent: May 11, 1999
    Assignee: Granville-Phillips Company
    Inventors: Daniel Granville Bills, Wilbert Leonard Porter