Patents by Inventor William W. Grafton

William W. Grafton 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).

  • Combination airconditioning/heat system for emergency vehicle
    Patent number: 6543240
    Abstract: An air conditioning arrangement for an emergency vehicle or the like including an evaporator unit comprising closely spaced first and second tubing arrays, with each array being operably associated with a respective refrigerant compressor. The tubing of each array is formed into coils involving a number of essentially parallel tubing runs connected by curved end members, with substantial portions of the tubing being provided with fins. A low voltage blower is positioned to cause air to be pulled across the tubing of the first and second tubing arrays and between the fin members.
    Type: Grant
    Filed: July 20, 2001
    Date of Patent: April 8, 2003
    Inventor: William W. Grafton
  • Combination airconditioning/heat system for emergency vehicle
    Publication number: 20030014992
    Abstract: An air conditioning arrangement for an emergency vehicle or the like including an evaporator unit comprising closely spaced first and second tubing arrays, with each array being operably associated with a respective refrigerant compressor. The tubing of each array is formed into coils involving a number of essentially parallel tubing runs connected by curved end members, with substantial portions of the tubing being provided with fins. A low voltage blower is positioned to cause air to be pulled across the tubing of the first and second tubing arrays and between the fin members.
    Type: Application
    Filed: July 20, 2001
    Publication date: January 23, 2003
    Inventor: William W. Grafton