Lid retainer for monitoring well
US6026906A · kind A · utility
Inventor
Key dates
| Filing date | Dec 31, 1997 |
| Grant date | Feb 22, 2000 |
| Priority date | — |
| Expiry date | Dec 31, 2017 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE02D29/1409
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An improved lid retainer for a ground-water monitoring well of the type having a housing, a water-tight lid, and a lid fastener for fastening the lid to the housing. The lid retainer has a lid fastener receiving member which cooperates with the lid fastener, a flexible horizontal brace member and a flexible vertical brace member, each connected to the lid fastener receiving member and adapted to be contourable to the shape of the inner surface of the housing of the monitoring well and to provide support therefor. Each brace member has an attachment structure, such as an aperture, for attaching the lid retainer to the housing by suitable fasteners. Preferred fasteners include concrete anchors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.