Electrical box

Details Electrical box Electrical box

1979-12-06

1982-02-09

Rubinson, Gene Z.

Electricity: conductors and insulators

Boxes and housings

With grounding means

174 53, 220 32, H02G 308

Patent

active

043151000

ABSTRACT:
An electrical box adapted to receive an electrical fitting. There are openings formed in the box to align with openings formed in the fitting. Separate threaded portions are positionable within the openings and can move apart upon insertion of a screw. But the threaded portion grips the screw when the screw is rotated. The speed of installation is greater than is possible with prior art boxes.

REFERENCES:
patent: 3210458 (1965-10-01), Palmer
patent: 3352341 (1967-11-01), Schertz
patent: 3876821 (1975-04-01), Pringle
patent: 4071158 (1978-01-01), 220
patent: 4130335 (1978-12-01), Kinney

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