Patents by Inventor Lee E. Huffman

Lee E. Huffman 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).

  • Control system and method for operating an asphalt paver screed burner system
    Patent number: 5895172
    Abstract: In one aspect of the present invention, an automatic screed temperature control is disclosed. The control senses the screed temperature and compares the screed temperature to a lower set point. In response to the screed temperature being less than the lower set point, the control causes fuel to dispense into the combustion chamber and subsequently causes the fuel to ignite in order to heat the screed. The screed is heated until the screed temperature becomes greater than an upper set point.
    Type: Grant
    Filed: June 30, 1997
    Date of Patent: April 20, 1999
    Assignee: Caterpillar Inc.
    Inventors: Conrad G. Grembowicz, Lee E. Huffman, Wade D. Samson
  • Method and apparatus for automatically controlling the temperature of an asphalt paver screed
    Patent number: 5607254
    Abstract: In one aspect of the present invention, an automatic screed temperature control is disclosed. The control senses the screed temperature and compares the screed temperature to a lower set point. In response to the screed temperature being less than the lower set point, the control causes fuel to dispense into the combustion chamber and subsequently causes the fuel to ignite in order to heat the screed. The screed is heated until the screed temperature becomes greater than an upper set point.
    Type: Grant
    Filed: May 19, 1995
    Date of Patent: March 4, 1997
    Assignee: Caterpillar Inc.
    Inventors: Conrad G. Grembowicz, Lee E. Huffman, Wade D. Samson