Flexible impeller removal and installation method
US6394753B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 7, 2001 |
| Grant date | May 28, 2002 |
| Priority date | — |
| Expiry date | Feb 7, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/53896
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
Flexible vane pumps (also referred to as rubber impeller pumps) are commonly used in the marine engine coolant market. Replacement of the flexible (rubber) impeller has proven to be difficult, particularly for larger pumps located in the confines of an engine compartment of a boat and for impellers encrusted with salt, sand or otherwise stuck to the pump shaft. To aid in extracting impellers, an end piece on the impeller has been added such that a tool having flanges can be inserted into a space between the end piece and the impeller. The end piece on the impeller can also be used as an end plate to engage a threaded shaft for jacking the impeller onto a pump shaft. An alignment cone can be added to the pump housing for aligning the impeller with the pump shaft and pump housing bore.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.