Patents by Inventor Donald R. Froman

Donald R. Froman 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).

  • Method and apparatus for preventing splashing condensate from activating safety pressure switch in multi-poise condensing furnace
    Patent number: 5320087
    Abstract: A method and apparatus for preventing splashing condensate from activating the safety pressure switch in a multi-poise condensing furnace includes removing the existing tubing connected to upper and lower pressure taps provided on the collector box of the furnace. T connectors and secondary tubing are then fastened to each of the pressure taps and the existing tubing reconnected to a corresponding T connector.
    Type: Grant
    Filed: August 18, 1993
    Date of Patent: June 14, 1994
    Assignee: Carrier Corporation
    Inventor: Donald R. Froman