| 摘要 |
The invention provides that a cable tray accessory has tongues on sidewalls thereof which are adapted to locate in the return flanges of return flange cable tray. The tongues have tapered ends, but at the extremities are "noses" which, upon insertion of the tongues in the return flanges by a pushing and rocking action, lock against the underside of the return flanges, locking the tongues to the cable tray. |
