Patents by Inventor Steve Hoffert

Steve Hoffert 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: 9599366
    Abstract: A flameless heater produces hot dry air utilizing hydraulic heat-transfer fluid as a heat transfer medium. The heater is powered preferably by a natural gas engine. The process begins with the natural gas engine producing rotary power which drives a hydraulic pump which directs the heat-transferring fluid through a dynamic heat generator to heat the fluid via an internal friction process. The heated fluid is subsequently circulated through a heat exchanger where a hydraulically-powered fan blows ambient air through to be heated. The heat exchanger also extracts heat from the exhaust and coolant system portions of the engine to further heat the air. The produced dry hot air may be used for general heating. It is envisioned that engines which utilize other fuel sources such as diesel, gasoline, steam, or the like could be utilized with equal effectiveness.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: March 21, 2017
    Inventor: Steve Hoffert
  • Publication number: 20150176859
    Abstract: A flameless heater produces hot dry air utilizing hydraulic heat-transfer fluid as a heat transfer medium. The heater is powered preferably by a natural gas engine. The process begins with the natural gas engine producing rotary power which drives a hydraulic pump which directs the heat-transferring fluid through a dynamic heat generator to heat the fluid via an internal friction process. The heated fluid is subsequently circulated through a heat exchanger where a hydraulically-powered fan blows ambient air through to be heated. The heat exchanger also extracts heat from the exhaust and coolant system portions of the engine to further heat the air. The produced dry hot air may be used for general heating. It is envisioned that engines which utilize other fuel sources such as diesel, gasoline, steam, or the like could be utilized with equal effectiveness.
    Type: Application
    Filed: March 14, 2013
    Publication date: June 25, 2015
    Inventor: Steve Hoffert