Drainage channel having improved coping for receiving grate
US5106231A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 15, 1991 |
| Grant date | Apr 21, 1992 |
| Priority date | — |
| Expiry date | Jul 15, 2011 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE01C11/227
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A drainage channel comprising a channel body which is U-shaped in cross-section and defines a concave base and integrally formed opposing first and second vertically spaced-apart side walls, the first and second side walls including respective crowns formed in upper free ends of the side walls. The upper free end of the side walls define a predetermined thickness between respective inner side wall surfaces and outer sidewall surfaces. The outer surfaces of the side walls define an elongate detent spaced below the upper free ends of the first and second side walls and extending along at least part of the length of the channel body and defining an area of reduced thickness below the relatively thicker free ends of the first and second side walls. A coping encloses the crown of a respective side of the channel body. The coping includes an inner leg for resting against the inner side wall surfaces of the channel and an outer leg for resting against the outer side wall surfaces of the channel. The outer leg has an elongate rib of enlarged dimension on a free end of the outer leg for being received by means of a snap fit over the relatively thick free end of the side wall into the detent…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.