Electrical wiring box and cable clamp
US4316999A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 23, 1980 |
| Grant date | Feb 23, 1982 |
| Priority date | — |
| Expiry date | Jul 23, 2000 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02G3/085
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Electrical wiring box arrangements comprise a wiring box with end, side, and rear walls and a cable clamp. The wiring box wall structure is provided with knock-out regions, a first cable-engaging means, and means for attaching the cable clamp to a wall having knock-out regions. The cable clamp comprises a flexible flat sheet, attachable at one end to the box wall structure interior to the box. The opposite end of the cable clamp is provided with a foot portion, formed at an acute dihedral angle with the main body of the clamp. A non-metallic sheathed electrical cable inserted through a knock-out opening in the box wall structure, deflects the unattached end of the clamp inwardly into the box, engaging the cable against removal from the knock-out opening in an outward direction by the action of the first cable-engaging means and the heel of the clamp foot portion bearing oppositely against the cable sheath.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.