Non-return device
US9567737B2 · kind B2 · utility
5Cited by
5References
49Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 23, 2010 |
| Grant date | Feb 14, 2017 |
| Priority date | — |
| Expiry date | Nov 23, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7879
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A non-return device (10) for use with a waste trap is described. The non-return device comprises a sealing portion (12) having first and second sheet members (14, 16), a device inlet (18), a device outlet (20) and a transition portion (22) providing fluid communication between the device inlet and the sealing portion. The transition portion has a convex section of wall (24).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.