Device for preventing the theft of electrical appliances
US5288239A · kind A · utility
Inventor
Key dates
| Filing date | Nov 12, 1992 |
| Grant date | Feb 22, 1994 |
| Priority date | — |
| Expiry date | Nov 12, 2012 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01R13/60
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A device for preventing the unauthorized removal of electrical appliances having a cord terminating in a plug with two prongs having aligned holes therethrough, comprises an enclosure adapted to be opened and closed and having holes through a side wall thereof of a size to permit the insertion of the prongs through the holes but to prevent insertion of the plug through the holes. The enclosure is locked against unauthorized opening. A spring clip within the enclosure is removably engageable within the holes through the prongs and releasably retains the prongs within the enclosure. The enclosure comprises two portions hingedly interconnected, and the lock releasably retains these two portions closed together. The enclosure comprises polygonal channels which, when closed together, form a polygonal enclosure of closed polygonal cross-sectional configuration, preferably rectangular, for example square.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.