Receptacle and plug therefor

Electrical connectors – With insulation other than conductor sheath – Plural-contact coupling part

Reexamination Certificate

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Details

C439S650000

Reexamination Certificate

active

10698187

ABSTRACT:
An electrical receptacle defines a receptacle formation of a mating formation pair to prevent a standard plug from establishing electrical connection while permitting an otherwise standard plug defining a corresponding plug formation to be sufficiently inserted to establish an electrical connection. The mating formation pair may include a projection on the receptacle adapted for receipt by a corresponding recess on a compatible plug. Alternatively, the mating formation pair is defined by an opening of the receptacle and a conductor of the plug, each having a cross-sectional height that is reduced from that of a standard receptacle and plug. The mating formation pair is particularly desirable for installation including a receptacle controlled by a dimmer to prevent electrical connection by a standard plug connected to a non-dimmable electrical load.

REFERENCES:
patent: 4293733 (1981-10-01), Royer
patent: 4403824 (1983-09-01), Scott
patent: 4583799 (1986-04-01), Wiley
patent: 4775802 (1988-10-01), Dods
patent: 5045833 (1991-09-01), Smith
patent: 5454729 (1995-10-01), Wen-Te
patent: 5476396 (1995-12-01), De Castro
patent: 5601455 (1997-02-01), Bagga
patent: 5785551 (1998-07-01), Libby
patent: 6120320 (2000-09-01), Veiga et al.
patent: 6227883 (2001-05-01), Lee
patent: 6468095 (2002-10-01), Kerr et al.
patent: 6592392 (2003-07-01), Po-Heng
patent: 6674003 (2004-01-01), Torres
patent: 490 086 (1930-01-01), None
patent: 94 06 135 (1994-09-01), None
patent: 05 65081 (1993-08-01), None
“NEMA Plug Configurations”, Grainger® Catalogue, W.W. Grainger, Inc., 1 page, undated.

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