Duckbill valve and method for making a duckbill valve
US11073214B2 · kind B2 · utility
0Cited by
8References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 29, 2019 |
| Grant date | Jul 27, 2021 |
| Priority date | — |
| Expiry date | Mar 29, 2039 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2031/7506
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A duckbill valve includes a flexible and hollow body having a first shape upon being formed by injection molding. The body in the first shape has a first opening at a first end and a second opening at a second end. The body is configured to be inverted into a second shape. The second shape has a first opening at a first end and has a slit at a second end. The slit is defined by lips that are pressed together to form a seal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.