Plaster frame
US4803603A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 16, 1988 |
| Grant date | Feb 7, 1989 |
| Priority date | — |
| Expiry date | Feb 16, 2008 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21V21/04
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A plaster frame or base for recessed lighting fixtures has hanger bar receiving corners which are bendable to accommodate parallel or perpendicular axis orientation relative to ceiling joists or suspension grids. The frame spans the space between a pair of hanger bars and its corners have a plurality of mountings to accommodate different types of hanger bar such as flat horizontal, flat vertical, and adjustable interlocking hanger bars. The frame is preferably a rectangular metal plate with a flat base having upstanding side flanges, a fixture receiving aperture through the base between the flanges having a depending skirt or collar to surround and mount the fixture, mountings on the base for a junction box adjacent the aperture, and bendable hanger bar securing corners. The plate is sufficiently narrow to fit through the conventional ceiling aperture for the fixture.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.