发明授权
- 专利标题: Vacuum pump
- 专利标题(中): 真空泵
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申请号: US12522317申请日: 2008-01-09
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公开(公告)号: US08851829B2公开(公告)日: 2014-10-07
- 发明人: Barrie Dudley Brewster , Martin Ernst Tollner , Paul David Flower
- 申请人: Barrie Dudley Brewster , Martin Ernst Tollner , Paul David Flower
- 申请人地址: GB Crawley, West Sussex
- 专利权人: Edwards Limited
- 当前专利权人: Edwards Limited
- 当前专利权人地址: GB Crawley, West Sussex
- 代理机构: Westman, Champlin & Koehler, P.A.
- 优先权: GB0701609.0 20070129
- 国际申请: PCT/GB2008/050022 WO 20080109
- 国际公布: WO2008/093134 WO 20080807
- 主分类号: F04D29/059
- IPC分类号: F04D29/059 ; F04D19/04 ; F16C27/04 ; F16C19/16 ; F04D29/66
摘要:
A pump insert (50) for supporting a rotor (14) of a pump comprises an annular resilient support (52) for engaging the body (26) of the pump, the support (52) extending about a rolling bearing (10) having an inner race (12) for engaging the rotor (14), an axially preloaded outer race (16) fixed to the support (52), and a plurality of rolling elements (18) located between the races. During assembly, the rolling bearing (10) can be accurately positioned within the support (52) so that there is a very low tolerance stack-up when the insert (50) is fitted to the rotor (14). Consequently, the position of the rotor (14) will hardly change, if at all, when the rolling bearing (10) is replaced during servicing of the pump.
公开/授权文献
- US20100135784A1 VACUUM PUMP 公开/授权日:2010-06-03