Patents by Inventor Frank H. Winstel

Frank H. Winstel 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).

  • Apparatus for recovery of heat from exhaust gases of dryer
    Patent number: 4028817
    Abstract: Apparatus and method for recovery of heat from exhaust gases of dryers and return of heat to the dryer system. Fresh air is drawn through a plurality of tubes in heat exchange relation to heated exhaust gases and introduced into the drying system without intermingling of contaminated exhaust gases with the heated fresh air. The apparatus and method have particular utility in gas-fired commercial and industrial laundry dryers.
    Type: Grant
    Filed: September 29, 1975
    Date of Patent: June 14, 1977
    Assignee: Auto-Heat, Inc.
    Inventor: Frank H. Winstel