公开(公告)号：US11506212B2

公开(公告)日：2022-11-22

申请号：US16753623

申请日：2018-10-05

Applicant: Edwards Limited

Inventor： Peter Meares ,  Andrew William Snell ,  Richard Glyn Horler

IPC: F16C19/52 ,  F16C33/38 ,  F04D19/04 ,  F16C19/06 ,  F04D29/059

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.

公开(公告)号：US20200248701A1

公开(公告)日：2020-08-06

申请号：US16753623

申请日：2018-10-05

Applicant: Edwards Limited

Inventor： Peter Meares ,  Andrew William Snell ,  Richard Glyn Horler

IPC: F04D19/04 ,  F16C19/06

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.