Patents by Inventor Harold I. Hill

Harold I. Hill 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).

  • Thermomechanical analysis apparatus
    Patent number: 4896973
    Abstract: A thermomechanical analysis apparatus includes a probe assembly supported in substantially weightless contact with a sample material over a range of displacement of the probe by means of a linear motor controlled from a constant current source. The probe assembly is automatically weighed by measuring and storing the value of the current needed to raise the probe, that value is thereafter employed during the analysis mode to maintain the probe assembly in a substantially weightless condition.
    Type: Grant
    Filed: February 21, 1985
    Date of Patent: January 30, 1990
    Assignee: The Perkin-Elmer Corporation
    Inventors: Harold I. Hill, Michael J. O'Neill, Thomas M. Murray
  • Assembly for positioning a thermogravimetric furnace
    Patent number: 4537572
    Abstract: An apparatus for positioning a thermogravimetric furnace includes a furnace mounting bracket which is rotatable about and linearly translatable along a single axis. In addition, simultaneous rotational and linearly movement of the furnace is excluded.
    Type: Grant
    Filed: February 2, 1984
    Date of Patent: August 27, 1985
    Assignee: The Perkin-Elmer Corporation
    Inventors: Harold I. Hill, Stanley D. Norem, Roger Targowski
  • Mounting apparatus
    Patent number: 4419020
    Abstract: An apparatus for use in combination with a differential thermal analyzer includes a support member which provides at least two tangential points of contact for each of the two support columns of the instrument. Additional points of contact can also be provided by a spring clip to further secure the proper spacing of the columns.
    Type: Grant
    Filed: March 31, 1981
    Date of Patent: December 6, 1983
    Inventors: Harold I. Hill, Roger W. Targowski
  • Temperature sensor for a resistance furnace
    Patent number: 4390290
    Abstract: An apparatus for reducing the leakage current error from a resistance furnace includes a grounded electrically conductive member, an electrically insulating, thermally conductive member adjacent thereto, which thermally conductive member is contacted by a thermocouple junction.
    Type: Grant
    Filed: March 31, 1981
    Date of Patent: June 28, 1983
    Assignee: The Perkin-Elmer Corporation
    Inventors: Michael J. O'Neill, Harold I. Hill