Pump mounted thrust bearing
US5957656A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 13, 1998 |
| Grant date | Sep 28, 1999 |
| Priority date | — |
| Expiry date | Jul 13, 2018 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05C2203/08
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A thrust bearing assembly for a surface mounted centrifugal pump utilizes the pump liquid for lubrication of a thrust bearing and radial bearings. The thrust bearing mounts to the rearward end of the intake chamber. A communication passage extends between the thrust chamber and the intake chamber. A circulation tube leads from the intake chamber to the rearward end of the thrust chamber. A portion of the water being delivered to the intake chamber is diverted through the circulation tube, where it circulates through the thrust bearing and back to the intake of the pump. The shaft passes through the thrust chamber to an electrical motor. A mechanical seal seals the shaft at the rearward end of the thrust chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.