Hazardous location-rated plug
US5358429A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 27, 1993 |
| Grant date | Oct 25, 1994 |
| Priority date | — |
| Expiry date | Aug 27, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01R13/5202
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electrical plug for an associated electrical device for use in hazardous locations, comprising a metal housing; a nonconductive plug base holding at least two conductive terminal prongs connected to conductor wires passing through the housing and connected at their other end to the electrical device; and a plastic sleeve for preventing contact between the conductor wires and the metal housing, providing a bearing surface for the plug base and an elastomeric gasket compressed therebetween, cooperating with a reversible clamp to mechanically grip the conductor wires and prevent their separation from the terminal prongs, and providing simple measurement of a predetermined length of wire between the clamp and each terminal. A rubber grommet provides a moisture-resistant seal along the back end of the plug housing. A label plate may be affixed to the exterior surface of the plug housing by means of peened over posts that do not interfere with the integrity of the plug housing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.