HDPE covers for wastewater treatment lagoons, and HDPE patches thereon in service for further attachments
US11478994B1 · kind B1 · utility
0Cited by
1References
2Claims
0Family size
Inventors
Key dates
| Filing date | Sep 7, 2021 |
| Grant date | Oct 25, 2022 |
| Priority date | — |
| Expiry date | Sep 7, 2041 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2007/008
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The invention relates to covers for wastewater treatment lagoons, which are typically covered by expansive stretches of sheet-form, high density polyethylene (HDPE). The invention more particularly relates to improvements in attaching HDPE patches at distributed locations thereon, which patches provide locally increased thickness to the cover in service as seats for attachment of further attachments to the cover, such as for example and without limitation HDPE straps for retention of HDPE grout-filled ballast pipes, and so on.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.