Patents by Inventor Dallas C. Fox

Dallas C. Fox 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).

  • Expansion device for a refrigeration system
    Patent number: 5655387
    Abstract: A refrigerant expansion device for expanding refrigerant flowing within a refrigerant line from a condenser to an evaporator in a refrigeration system. The refrigerant expansion device includes a tubular restrictor having a cylindrical main portion and a tapered nozzle portion wherein the nozzle portion includes an outlet end having an orifice. A solder ring is disposed about the tapered nozzle portion and may be press fit onto the restrictor for secure engagement therewith. During the expansion device fabrication, the tubular restrictor is inserted into the refrigerant line to a predetermined position. The exterior of the refrigerant line is then heated at the predetermined position such that heat is transferred through the refrigerant line and melts the solder ring thereby brazing the restrictor to the refrigerant line at the predetermined position.
    Type: Grant
    Filed: September 5, 1996
    Date of Patent: August 12, 1997
    Assignee: Whirlpool Corporation
    Inventors: Thompson J. Matambo, Dallas C. Fox
  • Method of assembling an expansion device for a refrigeration system
    Patent number: 5581883
    Abstract: A refrigerant expansion device for expanding refrigerant flowing within a refrigerant line from a condenser to an evaporator in a refrigeration system. The refrigerant expansion device includes a tubular restrictor having a cylindrical main portion and a tapered nozzle portion wherein the nozzle portion includes an outlet end having an orifice. A solder ring is disposed about the tapered nozzle portion and may be press fit onto the restrictor for secure engagement therewith. During the expansion device fabrication, the tubular restrictor is inserted into the refrigerant line to a predetermined position. The exterior of the refrigerant line is then heated at the predetermined position such that heat is transferred through the refrigerant line and melts the solder ring thereby brazing the restrictor to the refrigerant line at the predetermined position.
    Type: Grant
    Filed: February 27, 1995
    Date of Patent: December 10, 1996
    Assignee: Whirlpool Corporation
    Inventors: Thompson J. Matambo, Dallas C. Fox
  • Telephone attachment
    Patent number: D267174
    Type: Grant
    Filed: August 11, 1980
    Date of Patent: December 7, 1982
    Inventors: Dallas C. Fox, Richard J. Raterman