Mounting fastener for elelctrical wiring boxes

Details Mounting fastener for elelctrical wiring boxes Mounting fastener for elelctrical wiring boxes

1990-04-26

1992-12-08

Picard, Leo P.

Electricity: conductors and insulators

Boxes and housings

With electrical device

220 32, H02G 308

Patent

active

051700131

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. In a first embodiment, 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. In a second embodiment, both the first and second walls are mounted by resilient support walls to allow deflection in the manner described.

REFERENCES:
patent: 3526703 (1970-09-01), Tucker
patent: 4315100 (1982-02-01), Haslbeck et al.
patent: 4529834 (1985-07-01), Nattel

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