Receptacles – Outlet or junction box type
Patent
1985-12-13
1987-05-19
Pollard, Steven M.
Receptacles
Outlet or junction box type
220 34, 220 35, F16B 3900
Patent
active
046660550
ABSTRACT:
An electrical outlet box formed of nonmetallic material which has a pair of integral bosses that angularly align, engage and retain wiring device mounting screws therein. The bosses each have a through bore for receiving the screws comprising in sequence a frustoconical surface, a cylindrical surface having a diameter slightly larger than the crest diameter of the mounting screw threads, and a self-tapping surface defining 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.
REFERENCES:
patent: 2867349 (1959-01-01), Parker, Jr.
patent: 3967049 (1976-06-01), Brandt
patent: 4012580 (1977-03-01), Arnold
patent: 4071159 (1978-01-01), Robinson et al.
patent: 4105862 (1978-08-01), Hoehn
patent: 4214667 (1980-07-01), Lass
patent: 4265365 (1981-05-01), Boteler
patent: 4304958 (1981-12-01), Neff et al.
patent: 4580689 (1986-04-01), Slater
Sample of Carlon Electrical Box.
Bicks Mark S.
Goodman Alfred N.
Harvey Hubbell Incorporated
Pollard Steven M.
Presson Jerry M.
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