Receptacles – Outlet or junction box type
Patent
1987-02-05
1987-11-17
Pollard, Steven M.
Receptacles
Outlet or junction box type
220 34, 220 35, F16B 3900
Patent
active
047068310
ABSTRACT:
An electrical outlet box formed of metallic material has an integral boss that angularly aligns, engages and retains wiring device mounting screws. The boss has a bore for receiving the screw comprising in sequence a cylindrical surface having a diameter slightly larger than the crest diameter of the mounting screw threads, and a self-tapping surface defining generally a regular hexagon in transverse cross section. The hexagon has a diameter across its corners slightly larger than the crest diameter of the screw threads, and a diameter across its flat sides slightly larger than the root diameter of the screw threads and slightly smaller than the crest diameter of the screw threads. A slot extends laterally from the bore and into the boss.
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Sample of Carlon Electrical Box.
'Hubbell Incorporated
Bicks Mark S.
Goodman Alfred N.
Pollard Steven M.
Presson Jerry M.
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