Patents by Inventor Pk Haridass Krishnamoorthy

Pk Haridass Krishnamoorthy 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).

  • Siphonable check valve and method of making same
    Patent number: 7503343
    Abstract: A check valve for connection in a fuel tank filler tube. The valve has a tubular body with a plurality of radially inwardly extending projections on the inner surface of the tubular body or mounting adaptor. A valve seat is disposed downstream of the ribs, and an aperture is formed in the side of the tubular body. When the end of a siphoning hose is inserted into the check valve, the projections deflect the hose through the aperture to facilitate further insertion of the hose into the tank.
    Type: Grant
    Filed: September 26, 2005
    Date of Patent: March 17, 2009
    Assignee: Eaton Corporation
    Inventors: Pk Haridass Krishnamoorthy, Steven H. Verzyl, Robert P. Benjey
  • Assembling a siphonable filler tube with a check valve on a fuel tank
    Patent number: 7458391
    Abstract: A fuel filler tube assembly including a one-way valve or check valve. The tube assembly is adaptable for pre-assembly on either a metal or plastic fuel tank and employs a common check valve with an adapter tube for plastic tanks. The valve employs a flapper with spaced ribs for deflecting a siphon hose away from the valve seal; and, the ribs are spaced to maintain the flow stream of he fuel during refueling and facilitating opening of the flapper.
    Type: Grant
    Filed: October 28, 2004
    Date of Patent: December 2, 2008
    Assignee: Eaton Corporation
    Inventors: Pk Haridass Krishnamoorthy, Charles J. Martin, Maxim V. Zorine, Steven H. Verzyl, Robert P. Benjey
  • Siphonable check valve and method of making same
    Publication number: 20060037648
    Abstract: A check valve for connection in a fuel tank filler tube. The valve has a tubular body with a plurality of radially inwardly extending projections on the inner surface of the tubular body or mounting adaptor. A valve seat is disposed downstream of the ribs, and an aperture is formed in the side of the tubular body. When the end of a siphoning hose is inserted into the check valve, the projections deflect the hose through the aperture to facilitate further insertion of the hose into the tank.
    Type: Application
    Filed: September 26, 2005
    Publication date: February 23, 2006
    Applicant: Eaton Corporation
    Inventors: Pk Haridass Krishnamoorthy, Steven Verzyl, Robert Benjey
  • Siphonable check valve and method of making same
    Patent number: 6959727
    Abstract: A check valve for connection in a fuel tank filler tube. The valve has a tubular body with a plurality of radially inwardly extending vanes or ribs in the inlet end about a portion of the circumference. The ribs are tapered in the flow direction to deflect the end of a siphoning hose to an offset opening. A valve seat and poppet with a tapered surface are disposed downstream of the ribs, clearance apertures are formed in the side of the tubular body downstream of the valve seat. The tapered surface of the poppet, upon being opened by insertion of the end of a siphoning hose deflects the hose outwardly through the clearance apertures to facilitate further insertion into the tank. The poppet is biased normally closed by a spring.
    Type: Grant
    Filed: April 30, 2002
    Date of Patent: November 1, 2005
    Assignee: Eaton Corporation
    Inventors: Pk Haridass Krishnamoorthy, Steven A. Verzyl, Robert P. Benjey
  • Siphonable check valve and method of making same
    Publication number: 20030201014
    Abstract: A check valve for connection in a fuel tank filler tube. The valve has a tubular body with a plurality of radially inwardly extending vanes or ribs in the inlet end about a portion of the circumference. The ribs are tapered in the flow direction to deflect the end of a siphoning hose to an offset opening. A valve seat and poppet with a tapered surface are disposed downstream of the ribs, clearance apertures are formed in the side of the tubular body downstream of the valve seat. The tapered surface of the poppet, upon being opened by insertion of the end of a siphoning hose deflects the hose outwardly through the clearance apertures to facilitate further insertion into the tank. The poppet is biased normally closed by a spring.
    Type: Application
    Filed: April 30, 2002
    Publication date: October 30, 2003
    Applicant: EATON CORPORATION
    Inventors: Pk Haridass Krishnamoorthy, Steven A. Verzyl, Robert P. Benjey
  • Assembling a siphonable filler tube with a check vlave on a fuel tank
    Publication number: 20030116202
    Abstract: A fuel filler tube assembly including a one-way valve or check valve. The tube assembly is adaptable for pre-assembly on either a metal or plastic fuel tank and employs a common check valve with an adapter tube for plastic tanks.
    Type: Application
    Filed: December 21, 2001
    Publication date: June 26, 2003
    Applicant: EATON CORPORATION
    Inventors: Pk Haridass Krishnamoorthy, Charles J. Martin, Maxim V. Zorine, Steven A. Verzyl, Robert P. Benjey