Trunking sections and coupling therefor
US7344163B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Aug 19, 2003 |
| Grant date | Mar 18, 2008 |
| Priority date | — |
| Expiry date | Aug 19, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/53917
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A section of trunking (20) has sides (22) which define a channel (34). Edge portions (32) of sides (22) are shaped so as to form further channels (34); Lid (26) has surface (29) and edge portions (30) which extend over channels (34) so as to form enclosed volumes. Screws (36) are used to fix lid (36) onto trunking section (20). Any water leaking through holes (38) and down the threads of screws (36) will be retained within channel (34) and will eventually dissipate between the side portion (30) of lid (26) and side (22) of trunking section (20). Trunking sections (20) are coupled by coupling (50) which is formed from surfaces (52, 54, 56, 58, 60, 62 64 and 66) which themselves engage internal surfaces of the trunking sections and their respective lids. Coupling (50) is provided with pairs of threaded holes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.