Ladder-type cable tray system
US5465929A · kind A · utility
Assignees
Inventor
Key dates
| Filing date | Aug 19, 1993 |
| Grant date | Nov 14, 1995 |
| Priority date | — |
| Expiry date | Aug 19, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T403/553
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A ladder-type cable tray system comprising a first cable tray section and a second cable tray section. Each cable tray section includes first and second rails extending lengthwise of the section at opposite sides of the section and a plurality of rungs extending between the rails at intervals spaced lengthwise of the section. Each of the first and second rails has a tubular portion forming a hollow beam extending the length of the rail. The tubular portion has open ends at opposite ends of the rail and a rung-supporting portion integrally formed as one piece with the tubular portion and depending therefrom. The system further comprises fasteners for securing the rungs to the rung-supporting portions of the first and second rails in a position wherein the rungs span the rung-supporting portions, and a plurality of splices for connecting the first and second cable tray sections end to end. The splices include a first splice sized and shaped for a snug telescoping fit within adjacent open ends of the tubular portions of the first rails of the two cable tray sections, and a second splice sized and shaped for a snug telescoping fit within adjacent open ends of the tubular portions of th…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.