Patents by Inventor Brian Hemmersbach

Brian Hemmersbach 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).

  • Lubricant injection for a screw compressor
    Patent number: 10876531
    Abstract: A screw compressor, refrigerant circuit, lubrication method are disclosed. The screw compressor includes a suction inlet that receives a working fluid to be compressed. A compression mechanism is fluidly connected to the suction inlet. A discharge outlet is fluidly connected to the compression mechanism that outputs the working fluid following compression by the compression mechanism. The screw compressor includes a slide valve that is movable between a first position and a second position. The first position corresponds to a high volume ratio and the second position corresponds to a low volume ratio. The slide valve includes a plurality of lubricant passageways selectively connectable to a lubricant source. A first of the plurality of lubricant passageways is configured to be selected to provide lubricant at the high volume ratio, and a second of the plurality of lubricant passageways is configured to be selected to provide lubricant at the low volume ratio.
    Type: Grant
    Filed: December 26, 2018
    Date of Patent: December 29, 2020
    Assignee: TRANE INTERNATIONAL INC.
    Inventors: Keith Adam Novak, Alberto Scala, Timothy S. Hagen, Brian Hemmersbach
  • LUBRICANT INJECTION FOR A SCREW COMPRESSOR
    Publication number: 20200208638
    Abstract: A screw compressor, refrigerant circuit, lubrication method are disclosed. The screw compressor includes a suction inlet that receives a working fluid to be compressed. A compression mechanism is fluidly connected to the suction inlet. A discharge outlet is fluidly connected to the compression mechanism that outputs the working fluid following compression by the compression mechanism. The screw compressor includes a slide valve that is movable between a first position and a second position. The first position corresponds to a high volume ratio and the second position corresponds to a low volume ratio. The slide valve includes a plurality of lubricant passageways selectively connectable to a lubricant source. A first of the plurality of lubricant passageways is configured to be selected to provide lubricant at the high volume ratio, and a second of the plurality of lubricant passageways is configured to be selected to provide lubricant at the low volume ratio.
    Type: Application
    Filed: December 26, 2018
    Publication date: July 2, 2020
    Inventors: Keith Adam Novak, Alberto Scala, Timothy S. Hagen, Brian Hemmersbach