Patents by Inventor Loftus A. Fitzwater, III

Loftus A. Fitzwater, III 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).

  • Direct-acting pressure regulator
    Patent number: 6971403
    Abstract: A pressure regulator having a housing with an inlet port and an outlet port. A plug is located within the housing and dividing the housing into an upper chamber and a lower chamber, with the upper and lower chamber being connected by a vent. The plug includes a fluid path between the inlet port and the bore. A yoke is adapted selectively close the fluid path in the plug. A diaphragm is located in the upper chamber and is connected to the yoke. A biasing member biases the yoke to open the fluid path through the plug. The diaphragm is configured to move the yoke to open the fluid path when pressure in the lower chamber and vented to the upper chamber through the vent is above a predetermined amount. The pressure regulator can also include a second biasing member used to positively close the fluid path through the plug.
    Type: Grant
    Filed: March 10, 2003
    Date of Patent: December 6, 2005
    Assignee: S. H. Leggitt Company
    Inventors: Paul W. Heald, Christopher G. Turney, Loftus A. Fitzwater, III, Mark E. Hood, Charles M. Olds, Brian K. Yutzy
  • Direct-acting pressure regulator
    Patent number: 6668855
    Abstract: A pressure regulator having a housing with an inlet port and an outlet port. A plug is located within the housing and dividing the housing into an upper chamber and a lower chamber, with the upper and lower chamber being connected by a vent. The plug includes a fluid path between the inlet port and the bore. A yoke is adapted selectively close the fluid path in the plug. A diaphragm is located in the upper chamber and is connected to the yoke. A biasing member biases the yoke to open the fluid path through the plug. The diaphragm is configured to move the yoke to open the fluid path when pressure in the lower chamber and vented to the upper chamber through the vent is above a predetermined amount. The pressure regulator can also include a second biasing member used to positively close the fluid path through the plug.
    Type: Grant
    Filed: July 3, 2001
    Date of Patent: December 30, 2003
    Assignee: S. H. Leggitt Company
    Inventors: Paul W. Heald, Christopher G. Turney, Loftus A. Fitzwater, III, Mark E. Hood, Charles M. Olds