Cable tray
US6313405A · kind A · utility
54Cited by
16References
41Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 31, 1999 |
| Grant date | Nov 6, 2001 |
| Priority date | — |
| Expiry date | Aug 31, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02G3/0456
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A cable tray including a pair of generally parallel or concentric spaced-apart metal side rails and a plurality of spaced apart rungs secured to and extending between the rails at intervals spaced along the rails. The rails and rungs define a cable fill area therebetween. The spacing of the rungs is set according to a pi spacing factor. The rails can have laterally projecting top flange members that extend outwardly in a direction away from the cable fill area and can have lower flange members that extend inwardly in a direction into the cable fill area. The top flanges have a plurality of spaced apart apertures therethrough.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.