Method and apparatus for the manufacture of duckbill valves
US5897828A · kind A · utility
6Cited by
7References
10Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | May 14, 1997 |
| Grant date | Apr 27, 1999 |
| Priority date | — |
| Expiry date | May 14, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T83/364
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A method and apparatus for manufacture of duckbill valves in which the opposed lips of the valve are split by applying a high fluid pressure inside the valve. This pressure causes the valve to balloon and burst. Preferably, the valve is supported over all of its outer surface except the end to be split by a die. The system is particularly suited to duckbill valves made of thermoplastic elastomer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.