Pump impellers and manufacture thereof by co-injection molding
US4512720A · kind A · utility
5Cited by
7References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 12, 1983 |
| Grant date | Apr 23, 1985 |
| Priority date | — |
| Expiry date | Apr 12, 2003 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C2045/1664
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A pump inpeller and a method for its manufacture wherein the impeller is made of two different synthetic plastics using a co-injection molding process. One plastic, used to fabricate a core section of the impeller, is a rigid thermoplastic material. The other plastic, used to fabricate the vanes section, is a thermoplastic elastomer. The latter is injected after the rigid thermoplastic material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.