Electrical connectors – With circuit conductors and safety grounding provision – Direct grounding of coupling part member passing into aperture
Reexamination Certificate
2000-08-15
2001-12-11
Vu, Hien (Department: 2833)
Electrical connectors
With circuit conductors and safety grounding provision
Direct grounding of coupling part member passing into aperture
C439S222000, C439S166000, C439S171000, C439S649000, C439S653000
Reexamination Certificate
active
06328581
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention relates to an universal electric adapter, and more particularly to such a universal electric adapter, which comprises a plug member at one side adapted for connection to any of a variety of electric sockets, and a face panel at an opposite side adapted for receiving any of a variety of electric plugs.
FIG. 22
shows an electric adapter according to the prior art. This structure of electric adapter comprises a casing
6
, a set of metal contact plates
613
respectively installed in the back side of the casing
6
, a plug member
62
covered on the back side of the casing
6
, the plug member
62
having a set of metal prongs
621
respectively disposed in contact with the metal contact plates
613
, a grounding frame
612
and two metal contact frames
611
respectively installed in the front side of the casing
6
and disposed in contact with the metal contact plates
613
, and a socket member
61
covered on the front side of the casing
6
and adapted to receive an electric plug. This structure of electric adapter has numerous drawbacks including (1) complicated structure with numerous component parts; (2) high manufacturing cost; (3) possible contact failure between the metal contact plates and the metal contact frames/grounding frame, and (4) not suitable for use with an electric socket of German or French specification.
FIG. 23
shows another structure of universal electric adapter according to the prior art. This structure of electric adapter comprises a casing
6
having an electric socket (not shown) at the front side thereof, and an electric plug
614
of German specification fastened to the backside
615
thereof. This design is expensive, and requires much installation space.
SUMMARY OF THE INVENTION
The invention has been accomplished under the circumstances in view. According to one aspect of the present invention, the universal electric plug comprises a face panel at the front side thereof adapted to receive any of a variety of electric plugs, and a plug member at the rear side thereof adapted to receive any of a variety of electric socket. According to another aspect of the present invention, the face panel may be integral with a computer socket adapted to receive a computer plug. According to still another aspect of the present invention, the face panel is equipped with a safety cover to prevent an insertion of an external object by an accident.
REFERENCES:
patent: 5626495 (1997-05-01), Drewnicki
patent: 5836777 (1998-11-01), Chen
patent: 6010347 (2000-01-01), Lee
patent: 6227883 (2001-05-01), Lee et al.
Lee Chiu-Shan
Li Shen Su-Chen
Nguyen Truc
Rosenberg , Klein & Lee
Vu Hien
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