Patents by Inventor Matt N. Hummel

Matt N. Hummel 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).

  • Patent number: 4480174
    Abstract: An electric heater for heating oil contained in the sump well of a compressor includes a thermally conductive shell having first and second opposed inner surfaces. A ceramic core having a D-shaped cross-section throughout is positioned in the shell and is provided with longitudinal channels which are disposed substantially the same distance from the outer curved surface of core. An electric resistance heating element is disposed in the channels and is energizable by a source of power for developing heat under the control of a thermostat disposed in the shell. A resilient pad of ceramic fiberglass material having low thermal conductivity is disposed between the flat surface of the core and the thermostat and urges the curved surface of the core and the thermostat into contact with the opposed inner surfaces of the shell while substantially blocking heat transfer therethrough from the heating element to the thermostat.
    Type: Grant
    Filed: July 12, 1982
    Date of Patent: October 30, 1984
    Assignee: Acra Electric Corporation
    Inventor: Matt N. Hummel
  • Patent number: 4311900
    Abstract: A heater band formed of an extruded metal channel member and a heater plate assembly received within a slot extending along the length of the channel. The heater plate assembly and the extrusion are compressed together to provide a heater band having a dense cross section resulting in improved heat transfer characteristics. The heater band in accordance with the present invention has a longer life and higher heating capabilities than heater bands known to the prior art.
    Type: Grant
    Filed: January 18, 1980
    Date of Patent: January 19, 1982
    Assignee: Acra Electric Corporation
    Inventor: Matt N. Hummel
  • Patent number: 4204316
    Abstract: A heater band formed of an extruded metal channel member and a heater plate assembly received within a slot extending along the length of the channel. The heater plate assembly and the extrusion are compressed together to provide a heater band having a dense cross section resulting in improved heat transfer characteristics. The heater band in accordance with the present invention has a longer life and higher heating capabilities than heater bands known to the prior art.
    Type: Grant
    Filed: August 3, 1978
    Date of Patent: May 27, 1980
    Assignee: Acra Electric Corporation
    Inventor: Matt N. Hummel