Patents by Inventor Ralph W. Hughes, Jr.

Ralph W. Hughes, Jr. 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).

  • Tap process for hard workpieces
    Patent number: 7313853
    Abstract: A process and apparatus for producing screw threads in hard material workpieces with a series of taps. The present invention employs a threaded bore formed in a bracket assembly to align and position multiple taps on a rotary machine. The taps are used in sequence to cut threads progressively deeper into a substrate. The present invention provides a method of aligning and orienting each progressive tap to begin its cut at the same initial starting point.
    Type: Grant
    Filed: October 24, 2005
    Date of Patent: January 1, 2008
    Assignee: Kennametal Inc.
    Inventors: Ralph W. Hughes, Jr., Troy F. Walters
  • Tap process for hard workpieces
    Patent number: 7305747
    Abstract: A process and apparatus for producing screw threads in hard material workpieces with a series of taps. The present invention employs a threaded bore formed in a bracket assembly to align and position multiple taps on a rotary machine. The taps are used in sequence to cut threads progressively deeper into a substrate. The present invention provides a method of aligning and orienting each progressive tap to begin its cut at the same initial starting point.
    Type: Grant
    Filed: October 24, 2005
    Date of Patent: December 11, 2007
    Assignee: Kennametal Inc.
    Inventors: Ralph W. Hughes, Jr., Troy F. Walters
  • Tap process for hard workpieces
    Patent number: 7293338
    Abstract: A process and apparatus for producing screw threads in hard material workpieces with a series of taps. The present invention employs a threaded bore formed in a bracket assembly to align and position multiple taps on a rotary machine. The taps are used in sequence to cut threads progressively deeper into a substrate. The present invention provides a method of aligning and orienting each progressive tap to begin its cut at the same initial starting point.
    Type: Grant
    Filed: October 24, 2005
    Date of Patent: November 13, 2007
    Assignee: Kennametal Inc.
    Inventors: Ralph W. Hughes, Jr., Troy F. Walters
  • Tap process for hard workpieces
    Patent number: 7281307
    Abstract: A process and apparatus for producing screw threads in hard material workpieces with a series of taps. The present invention employs a threaded bore formed in a bracket assembly to align and position multiple taps on a rotary machine. The taps are used in sequence to cut threads progressively deeper into a substrate. The present invention provides a method of aligning and orienting each progressive tap to begin its cut at the same initial starting point.
    Type: Grant
    Filed: October 24, 2005
    Date of Patent: October 16, 2007
    Assignee: Kennametal Inc.
    Inventors: Ralph W. Hughes, Jr., Troy F. Walters
  • Tap process for hard workpieces
    Patent number: 7143490
    Abstract: A process and apparatus for producing screw threads in hard material workpieces with a series of taps. The present invention employs a threaded bore formed in a bracket assembly to align and position multiple taps on a rotary machine. The taps are used in sequence to cut threads progressively deeper into a substrate. The present invention provides a method of aligning and orienting each progressive tap to begin its cut at the same initial starting point.
    Type: Grant
    Filed: March 12, 2003
    Date of Patent: December 5, 2006
    Assignee: Kennametal Inc.
    Inventors: Ralph W. Hughes, Jr., Troy F. Walters
  • High speed milling cutter
    Patent number: 5967706
    Abstract: A milling cutter using a wedge to secure an insert within a pocket of the milling cutter wherein the wedge is tapered in both the axial direction and the radial direction. A screw urges the wedge within a tapered cavity to press the insert within the pocket along the axial wedge angle while rotation of the cutter creates centrifugal forces urging the wedge radially outward, thereby forcing the wedge against the radial wedge surface to further compress the insert within the pocket. The insert pocket may be extended to radially encompass the insert, thereby providing additional support against centrifugal forces for the insert.
    Type: Grant
    Filed: September 8, 1998
    Date of Patent: October 19, 1999
    Assignee: Kennametal Inc.
    Inventor: Ralph W. Hughes, Jr.