Centrifugal pumps
US4380416A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 11, 1981 |
| Grant date | Apr 19, 1983 |
| Priority date | — |
| Expiry date | Feb 11, 2001 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05D2260/6022
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A centrifugal pump, of the type comprising a body, a shaft rotatable in the body via a bearing, an impeller fixed on the shaft and, between the impeller and the bearing, a mechanical seal assembly comprising a pair of engaging slide rings and an inner sleeve made of elastomeric material, fitted on the shaft, the said sleeve comprising a portion adjacent the impeller on which is fixed one of the slide rings and, at the end on the bearing side, a radial flare for holding the seal assembly in the assembled state prior to its mounting, said sleeve being extended axially, beyond said radial flare, by a lip member arranged to rub on the adjacent surface of the bearing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.