公开(公告)号：US12018695B2

公开(公告)日：2024-06-25

申请号：US18250435

申请日：2021-10-28

Applicant: Edwards Limited

Inventor： Andrew Cobbett ,  Keith Weston ,  Richard Glyn Horler

IPC: F04D29/063 ,  F04D19/04 ,  F16C33/66

CPC classification number: F04D29/063 ,  F04D19/042 ,  F04D19/048 ,  F16C33/664

Abstract: Oil feed nut for providing a lubricant to a bearing of a vacuum pump comprising a first end and an opposite second end and being configured to be connected to a shaft of the vacuum pump. Further, the oil feed nut comprising an oil feeding element extending between the first end and the second end, wherein the oil feeding element has an increasing diameter towards the second end to create an increasing rotational force acting on the lubricant in order to convey the lubricant towards the second end, and a bearing journal element having a cylindrical surface configured to be received in a back-up bearing of the vacuum pump. Therein, the back-up bearing is arranged in a cartridge of an oil reservoir.

公开(公告)号：US20230400035A1

公开(公告)日：2023-12-14

申请号：US18250435

申请日：2021-10-28

Applicant: Edwards Limited

Inventor： Andrew Cobbett ,  Keith Weston ,  Richard Glyn Horler

IPC: F04D29/063 ,  F04D19/04 ,  F16C33/66

CPC classification number: F04D29/063 ,  F04D19/042 ,  F04D19/048 ,  F16C33/664

Abstract: Oil feed nut for providing a lubricant to a bearing of a vacuum pump comprising a first end and an opposite second end and being configured to be connected to a shaft of the vacuum pump. Further, the oil feed nut comprising an oil feeding element extending between the first end and the second end, wherein the oil feeding element has an increasing diameter towards the second end to create an increasing rotational force acting on the lubricant in order to convey the lubricant towards the second end, and a bearing journal element having a cylindrical surface configured to be received in a back-up bearing of the vacuum pump. Therein, the back-up bearing is arranged in a cartridge of an oil reservoir.