Patents by Inventor Andrew William Snell

Andrew William Snell 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).

  • Bearing cage retainer
    Patent number: 11506212
    Abstract: The present invention provides bearing cage retainer for a rolling element rotor bearing in a vacuum pump. The bearing cage retainer being configured to have an operational arrangement in which, at the maximum longitudinal axial displacement limit of the outer race in the direction of the retainer, the bearing cage retainer is disengaged from the bearing cage, and a failure configuration characterised by the dislocation of the bearing cage by a longitudinal axial displacement of the bearing cage relative to the outer race in the direction of the retainer and in which the bearing cage retainer engages said bearing cage and the bearing cage maintains the separation of the rolling elements within the bearing.
    Type: Grant
    Filed: October 5, 2018
    Date of Patent: November 22, 2022
    Assignee: Edwards Limited
    Inventors: Peter Meares, Andrew William Snell, Richard Glyn Horler
  • BEARING CAGE RETAINER
    Publication number: 20200248701
    Abstract: The present invention provides bearing cage retainer for a rolling element rotor bearing in a vacuum pump. The bearing cage retainer being configured to have an operational arrangement in which, at the maximum longitudinal axial displacement limit of the outer race in the direction of the retainer, the bearing cage retainer is disengaged from the bearing cage, and a failure configuration characterised by the dislocation of the bearing cage by a longitudinal axial displacement of the bearing cage relative to the outer race in the direction of the retainer and in which the bearing cage retainer engages said bearing cage and the bearing cage maintains the separation of the rolling elements within the bearing.
    Type: Application
    Filed: October 5, 2018
    Publication date: August 6, 2020
    Inventors: Peter Meares, Andrew William Snell, Richard Glyn Horler