Electrical junction and switch boxes
US4071159A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 30, 1976 |
| Grant date | Jan 31, 1978 |
| Priority date | — |
| Expiry date | Jun 30, 1996 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S411/918
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A molded synthetic resin open-sided box mountable in walls and ceilings for enclosing terminals and connections for electrical conductors extended through walls of the box, and providing access through a switch plate secured over the open side of the box. The box has integrally molded break-out windows extending between several of the intersecting walls of the box. Each of these break-out windows includes a removable panel retained in a surrounding opening by frangible interconnecting strips or bridge webs on opposite sides of the panel. Mounting screw holes are formed in the synthetic resin of the box at locations adjacent the open side thereof, and spring metal screw retaining clips are mounted in the box adjacent these holes so that parts of the clips project into the path of the shank of a screw extended into the holes to engage the threads on the shank.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.