Patents by Inventor Jason Maxim Hall

Jason Maxim Hall 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).

  • Turbomachine shaft and journal bearing assembly
    Patent number: 10125818
    Abstract: A turbomachine comprising a turbomachine shaft for rotation about an axis and for supporting a turbine wheel at one end of the turbomachine shaft; and a bearing housing having a wall defining a bore in which the turbomachine shaft is received with a substantially annular clearance, the turbomachine shaft being supported for rotation in the bore by at least one journal bearing located within the annular clearance. A surface of the turbomachine shaft which radially underlies the or each journal bearing has a surface roughness (Ra) of less than 0.15 microns and the or each journal bearing comprises a bronze alloy incorporating bismuth in an amount of up to around 6 wt %.
    Type: Grant
    Filed: December 18, 2015
    Date of Patent: November 13, 2018
    Assignee: CUMMINS LTD.
    Inventors: Michael Burkinshaw, Craig Lancaster, Jason Maxim Hall
  • A TURBOMACHINE SHAFT AND JOURNAL BEARING ASSEMBLY
    Publication number: 20170370409
    Abstract: A turbomachine comprising a turbomachine shaft for rotation about an axis and for supporting a turbine wheel at one end of the turbomachine shaft; and a bearing housing having a wall defining a bore in which the turbomachine shaft is received with a substantially annular clearance, the turbomachine shaft being supported for rotation in the bore by at least one journal bearing located within the annular clearance. A surface of the turbomachine shaft which radially underlies the or each journal bearing has a surface roughness (Ra) of less than 0.15 microns and the or each journal bearing comprises a bronze alloy incorporating bismuth in an amount of up to around 6 wt %.
    Type: Application
    Filed: December 18, 2015
    Publication date: December 28, 2017
    Applicant: Cummins Ltd
    Inventors: Michael Burkinshaw, Craig Lancaster, Jason Maxim Hall