Patents by Inventor Nigel Hardie

Nigel Hardie 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).

  • Slurry valve clutch mechanism
    Patent number: 7921870
    Abstract: A clutch mechanism for a slurry valve, wherein the slurry valve has a valve seat for seating a valve closure member carried on a valve stem, a drive member threadably engaged with the valve stem, the drive member being rotatable relative to the valve stem to axially move the valve stem and closure member relative to the valve seat to open and close the slurry valve, and a driving means for rotating the drive member, the clutch mechanism comprising: a clutch body having an internally threaded bore for threadably receiving the valve stem; and clamping means actuable with the clutch body for clamping the clutch body to the driving means so as to lock the valve stem and drive member together and allow them to rotate in unison to grind scale from the valve seat and valve closure member when they are positioned against each other.
    Type: Grant
    Filed: February 9, 2006
    Date of Patent: April 12, 2011
    Assignee: Tyco Flow Control Pacific Pty Ltd.
    Inventors: Nigel Hardie, Michael Taylor, Paul Delaney
  • Slurry Valve Clutch Mechanism
    Publication number: 20080315138
    Abstract: A clutch mechanism for a slurry valve, wherein the slurry valve has a valve seat for seating a valve closure member carried on a valve stem, a drive member threadably engaged with the valve stem, the drive member being rotatable relative to the valve stem to axially move the valve stem and closure member relative to the valve seat to open and close the slurry valve, and a driving means for rotating the drive member, the clutch mechanism comprising: a clutch body having an internally threaded bore for threadably receiving the valve stem; and clamping means actuable with the clutch body for clamping the clutch body to the driving means so as to lock the valve stem and drive member together and allow them to rotate in unison to grind scale from the valve seat and valve closure member when they are positioned against each other.
    Type: Application
    Filed: February 9, 2006
    Publication date: December 25, 2008
    Applicant: TYCO FLOW CONTROL PACIFIC PTY LTD
    Inventors: Nigel Hardie, Michael Taylor, Paul Delaney