Temporary trench cover and rail
US6666621B1 · kind B1 · utility
2Cited by
6References
12Claims
0Family size
Inventor
Key dates
| Filing date | Nov 7, 2002 |
| Grant date | Dec 23, 2003 |
| Priority date | — |
| Expiry date | Nov 7, 2022 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE04G21/3204
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A trench cover for temporarily covering a trench and a rail member used in constructing the trench cover. The cover includes a pair of longitudinally extending rails, the rails being spaced apart and substantially parallel to each other. Each rail includes a web extending between an upper flange and a lower lip. The flange, web and lip form a C-shaped channel. The C-shaped channels of the cover's pair of rails face each other. A substantially flat cover member having longitudinally extending side edges is positioned within the C-shaped channels of the rails and attached to the rails.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.