Electrical plug
US4552428A · kind A · utility
Inventor
Key dates
| Filing date | Jun 2, 1982 |
| Grant date | Nov 12, 1985 |
| Priority date | — |
| Expiry date | Jun 2, 2002 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01R2103/00
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An improved electrical plug includes a plug body of insulating material with front and rear end faces, a plurality of conducting prongs fixedly disposed in the plug body with the front portions projecting through the front end face of the plug body, a plurality of blind channels formed within the plug body through the rear end face adjacently parallel to the conducting prongs for receiving the insulated conductors therein, and a plurality of manually driving knobs coupled with the plug body in conjunction with the conducting prongs. Each of the driving knobs has a screw member secured to the inner side thereof, and a rectangular serrated member movably attached to the end of the screw member with the pointed teeth facing the blind channel, so that, by turning the driving knobs, the teeth perforate the insulation of the conductors without twisting the conductors, and firm electrical connections can be easily and quickly made without requiring any tools and skill.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.