Patents by Inventor Stephen Christiansen

Stephen Christiansen 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).

  • Patent number: 10975872
    Abstract: A condensate recovery system is adapted for use with an existing drain. A condensate collection vessel, which may be funnel-shaped, is inserted into the existing drain includes an upper opening to receive condensate and an outer wall. At least a portion of the outer wall is spaced apart from the inner wall of the drain such that if the collection vessel overflows, the excess liquid flows into the drain. A float switch is operative to detect when the vessel has been filled with condensate, and a pump is operative to drain the vessel in response to the float switch detecting that the vessel has been filled with condensate. A time delay relay (TDR) may be activated for a predetermined period of time before shutting off the pump. The output of the pump may be used to replenish an evaporative cooling tower or other purposes.
    Type: Grant
    Filed: May 21, 2018
    Date of Patent: April 13, 2021
    Inventor: Stephen Christiansen
  • Publication number: 20180340537
    Abstract: A condensate recovery system is adapted for use with an existing drain. A condensate collection vessel, which may be funnel-shaped, is inserted into the existing drain includes an upper opening to receive condensate and an outer wall. At least a portion of the outer wall is spaced apart from the inner wall of the drain such that if the collection vessel overflows, the excess liquid flows into the drain. A float switch is operative to detect when the vessel has been filled with condensate, and a pump is operative to drain the vessel in response to the float switch detecting that the vessel has been filled with condensate. A time delay relay (TDR) may be activated for a predetermined period of time before shutting off the pump. The output of the pump may be used to replenish an evaporative cooling tower or other purposes.
    Type: Application
    Filed: May 21, 2018
    Publication date: November 29, 2018
    Inventor: Stephen Christiansen