Method of making an external shell of a pump wheel of a hydrodynamic flow unit
US4825521A · kind A · utility
16Cited by
6References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 28, 1987 |
| Grant date | May 2, 1989 |
| Priority date | — |
| Expiry date | Apr 28, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49243
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An external shell of a pump wheel of a hydrodynamic flow unit manufactured from a sheet metal pressed part has, in its outlet-side region, an integral connecting sleeve with a cylindrical centering surface and a centered fastening surface extending thereform, and wherein the connecting sleeve is formed by upsettingly deforming, with the fastening surface being given a cylindrical shape and the centering surface being machined to its required diameter after upsettingly deforming.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.