Mounting fastener for electrical wiring boxes
US5170014A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 21, 1989 |
| Grant date | Dec 8, 1992 |
| Priority date | — |
| Expiry date | Mar 21, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02G3/18
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electrical outlet box is molded of plastic and includes push-in type screw receiving openings each of which is defined by rigid first and second walls having opposed semi-cylindrical faces mounted in spaced and axially aligned relationship to produce a generally cylindrical passage open at an outer end. Threads are formed about the interior of the cylindrical passage. The first wall is supported and carried substantially entirely by a resilient support wall lying in a plane generally perpendicular to the axis of the cylindrical passage. The support wall is mounted in cantilever fashion at a location spaced radially from the axis of the cylindrical passage so that the first wall can resiliently deflect away from the second wall when a screw is pushed axially into the passageway.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.