Patents by Inventor Robert B. Coffman

Robert B. Coffman 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).

  • Variable air supply for fabric dryers
    Patent number: 4006534
    Abstract: A fabric dryer including a damper in the air flow system thereof which reduces air flow through a load in the initial stages of drying and increases air flow during the terminal stages of drying to promote a faster drying cycle with less consumption of fuel.
    Type: Grant
    Filed: August 22, 1975
    Date of Patent: February 8, 1977
    Assignee: Norman Dryer Co., Inc.
    Inventor: Robert B. Coffman