Patents by Inventor David S. Bartran

David S. Bartran 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: 4563098
    Abstract: A gradient compensated temperature probe including a probe body and a temperature responsive element in the probe body at a measuring location couplable to a conventional temperature sensing circuit. The probe further includes a heating element spaced apart from the temperature responsive element for heating the probe to compensate for a temperature gradient along the probe. The probe further includes a bridge circuit, the legs of which each include a temperature dependent resistor located in the probe body between the heating element and the temperature responsive element. A comparator detects a temperature difference between the two temperature dependent resistors to control the application of power to the heating element to provide temperature gradient compensation for the probe.
    Type: Grant
    Filed: August 12, 1983
    Date of Patent: January 7, 1986
    Inventor: David S. Bartran