Discs with blades
US4770574A · kind A · utility
6Cited by
4References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 24, 1987 |
| Grant date | Sep 13, 1988 |
| Priority date | — |
| Expiry date | Mar 24, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T409/303808
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
Slots are sawn into the edges of discs for pumps with a cup saw so as to produce blades having a curved cross-section. The blades may taper inwardly or outwardly or have no taper.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.