Patents by Inventor Matthew V. Hartford

Matthew V. Hartford 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).

  • Seal assembly manufacturing methods
    Patent number: 7267602
    Abstract: Finishing a seal assembly as a unit is proposed, which prevents alignment of the end gaps of the annular body and the annular ring of the seal assembly, provides the ability to manufacture the seal assembly to very low tolerances, and establishes virtually perfect parallelism between the upper and lower surfaces of the seal assembly. A finishing process is characterized by lapping a seal assembly as an assembled unit with a lapper using gritted oil as a polishing medium.
    Type: Grant
    Filed: April 18, 2005
    Date of Patent: September 11, 2007
    Inventors: Maurice J. Moriarty, Matthew V. Hartford, Joseph D. Moriarty
  • Seal assembly manufacturing methods and seal assemblies manufactured thereby
    Patent number: 7207870
    Abstract: Finishing a seal assembly as a unit is proposed, which prevents alignment of the end gaps of the annular body and the annular ring of the seal assembly, provides the ability to manufacture the seal assembly to very low tolerances, and establishes virtually perfect parallelism between the upper and lower surfaces of the seal assembly. A finishing process is characterized by lapping a seal assembly as an assembled unit with a lapper using gritted oil as a polishing medium.
    Type: Grant
    Filed: April 18, 2005
    Date of Patent: April 24, 2007
    Inventors: Maurice J. Moriarty, Matthew V. Hartford, Joseph D. Moriarty
  • Seal assembly manufacturing methods and seal assemblies manufactured thereby
    Patent number: 6899595
    Abstract: Finishing a seal assembly as a unit is proposed, which prevents alignment of the end gaps of the annular body and the annular ring of the seal assembly, provides the ability to manufacture the seal assembly to very low tolerances, and establishes virtually perfect parallelism between the upper and lower surfaces of the seal assembly. A finishing process is characterized by lapping a seal assembly as an assembled unit with a lapper using gritted oil as a polishing medium.
    Type: Grant
    Filed: March 28, 2003
    Date of Patent: May 31, 2005
    Inventors: Maurice J. Moriarty, Matthew V. Hartford, Joseph D. Moriarty
  • Seal assembly manufacturing methods and seal assemblies manufactured thereby
    Publication number: 20030184017
    Abstract: Finishing a seal assembly as a unit is proposed, which prevents alignment of the end gaps of the annular body and the annular ring of the seal assembly, provides the ability to manufacture the seal assembly to very low tolerances, and establishes virtually perfect parallelism between the upper and lower surfaces of the seal assembly. A finishing process is characterized by lapping a seal assembly as an assembled unit with a lapper using gritted oil as a polishing medium.
    Type: Application
    Filed: March 28, 2003
    Publication date: October 2, 2003
    Inventors: Maurice J. Moriarty, Matthew V. Hartford, Joseph D. Moriarty