Patents by Inventor William B. Carnes

William B. Carnes 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).

  • Vacuum-assisted pump
    Patent number: 6616427
    Abstract: A self-priming centrifugal pump including a supplementary vacuum pump and a float valve. The vacuum pump serves to draw liquid to the pump for priming and the float valve shut of flow to the vacuum pump when liquid reaches a predetermined level to prevent entry of liquid into the vacuum pump. In some embodiments the float valve includes an o-ring valve seal and the vacuum pump includes an oil delivery system to distribute oil from an oil reservoir to improve lubrication.
    Type: Grant
    Filed: May 15, 2002
    Date of Patent: September 9, 2003
    Assignee: Roper Holdings, Inc.
    Inventors: William B. Carnes, Milton K. Leonard, Robert B. Ray
  • Vacuum-assisted pump
    Patent number: 6575706
    Abstract: A self-priming centrifugal pump including a supplementary vacuum pump and a float valve. The vacuum pump serves to draw liquid to the pump for priming and the float valve shut of flow to the vacuum pump when liquid reaches a predetermined level to prevent entry of liquid into the vacuum pump. In some embodiments the float valve includes an o-ring valve seal and the vacuum pump includes an oil delivery system to distribute oil from an oil reservoir to improve lubrication.
    Type: Grant
    Filed: April 22, 2002
    Date of Patent: June 10, 2003
    Assignee: Roper Holdings, Inc.
    Inventors: William B. Carnes, Milton K. Leonard
  • Vacuum-assisted pump
    Publication number: 20020168270
    Abstract: A self-priming centrifugal pump including a supplementary vacuum pump and a float valve. The vacuum pump serves to draw liquid to the pump for priming and the float valve shut of flow to the vacuum pump when liquid reaches a predetermined level to prevent entry of liquid into the vacuum pump. In some embodiments the float valve includes an o-ring valve seal and the vacuum pump includes an oil delivery system to distribute oil from an oil reservoir to improve lubrication.
    Type: Application
    Filed: May 15, 2002
    Publication date: November 14, 2002
    Applicant: Roper Holdings, Inc.
    Inventors: William B. Carnes, Milton K. Leonard, Robert B. Ray
  • Vacuum-assisted pump
    Publication number: 20020114707
    Abstract: A self-priming centrifugal pump including a supplementary vacuum pump and a float valve. The vacuum pump serves to draw liquid to the pump for priming and the float valve shut of flow to the vacuum pump when liquid reaches a predetermined level to prevent entry of liquid into the vacuum pump. In some embodiments the float valve includes an o-ring valve seal and the vacuum pump includes an oil delivery system to distribute oil from an oil reservoir to improve lubrication.
    Type: Application
    Filed: April 22, 2002
    Publication date: August 22, 2002
    Applicant: Roper Holdings, Inc.
    Inventors: William B. Carnes, Milton K. Leonard, Robert B. Ray
  • Vacuum-assisted pump
    Patent number: 6409478
    Abstract: A self-priming centrifugal pump including a supplementary vacuum pump and a float valve. The vacuum pump serves to draw liquid to the pump for priming and the float valve shut of flow to the vacuum pump when liquid reaches a predetermined level to prevent entry of liquid into the vacuum pump. In some embodiments the float valve includes an o-ring valve seal and the vacuum pump includes an oil delivery system to distribute oil from an oil reservoir to improve lubrication.
    Type: Grant
    Filed: February 26, 1999
    Date of Patent: June 25, 2002
    Assignee: Roper Holdings, Inc.
    Inventors: William B. Carnes, Milton K. Leonard, Robert B. Ray
  • Vacuum-assisted pump
    Patent number: RE39813
    Abstract: A self-priming centrifugal pump including a supplementary vacuum pump and a float valve. The vacuum pump serves to draw liquid to the pump for priming and the float valve shut of flow to the vacuum pump when liquid reaches a predetermined level to prevent entry of liquid into the vacuum pump. In some embodiments the float valve includes an o-ring valve seal and the vacuum pump includes an oil delivery system to distribute oil from an oil reservoir to improve lubrication.
    Type: Grant
    Filed: October 8, 2004
    Date of Patent: September 4, 2007
    Assignee: Roper Holdings, Inc.
    Inventors: William B. Carnes, Milton K. Leonard, Robert B. Ray