Socket which can be tightly connected with a plug

Details Socket which can be tightly connected with a plug Socket which can be tightly connected with a plug

2002-05-22

2003-07-15

Field, Lynn (Department: 2839)

Electrical connectors

Convertible by internal change to selectively cooperate with...

Coupling part

Reexamination Certificate

active

06592386

ABSTRACT:

BACKGROUND OF INVENTION
1. Field of the Invention
The present invention relates to an electric socket, and more specifically to an electric socket that can be connected firmly with a dismountable plug.
2. Description of the Prior Art
Electronic equipment has become a necessity for humans. Most electronic equipment whether it is located at home, offices, or hotels requires a power transformer which converts AC power from the socket on the wall to DC power. This kind of power transformer is used to reduce the dependence on batteries, or to provide a DC power to charge rechargeable batteries. In order to provide power, the power transformer must use power transformation circuitry inside a body of the power transformer and a plug installed onto the body. The plug is used to mate with the socket, which supplies power. However, there is a serious problem for people who often travel to different foreign countries. Power standards are not uniform worldwide.
It is difficult to use electronic equipment worldwide because of different voltages and frequencies in different countries. Similarly, the sockets installed on the wall may have different specifications. Power transformation circuitry has been developed to perform AC-to-DC power transformation worldwide. However, the power transformation circuitry does not work if used with an unsuitable socket.
Please refer to
FIG. 1
, which is a diagram of a prior art adapter (U.S. Pat. No. 6,109,977). The adapter
10
comprises a housing
14
and a pair of parallel prongs
12
rotatably installed on the housing
14
for connecting with a plug. As shown in
FIG. 1
, when the shape of the prongs
12
matches with the socket on the wall, the prongs
12
can be rotated to the position A for connecting with the socket on the wall.
Please refer to
FIG. 2
, which is a diagram of the prior art adapter
10
shown in FIG.
1
and different plugs
16
,
18
,
22
. For use with diverse socket standards in different countries, the prongs
12
can be transformed to another shape. When the prongs
12
are rotated to a position B, different plugs
16
,
18
,
22
can be connected. As shown in
FIG. 2
, when the prongs
12
are positioned at the position B, the user can connect the prongs
12
with one of the plugs
16
,
18
,
22
according to the specification of the socket on the wall. In this way, the adapter
10
is capable of plugging into different shapes of sockets on the wall using plugs
16
,
18
,
22
. However, the connection between the adapter
10
and the plugs
16
,
18
,
22
formed by plugging the prongs
12
into the holes
24
of the plugs
16
,
18
,
22
is not stable. Therefore, the adapter
10
may separate from the plugs
16
,
18
,
22
while plugged into the socket on the wall.
SUMMARY OF INVENTION
It is therefore a primary objective of the present invention to provide a dismountable plug with parallel prongs and protruded bases to solve the above-mentioned problem.
In a preferred embodiment, the present invention provides a plug that can be connected with a socket. The plug comprises a pair of parallel prongs and two protruded bases. One side of each protruded base has a receiving hole perpendicular to the parallel prongs. The socket has two slots corresponding to the two protruded bases. One side of each slot has a horizontal pin for inserting into a corresponding receiving hole. After the protruded bases are positioned on the slots of the socket, the plug can be rotated to insert the horizontal pins into the receiving holes. It is an advantage of the present invention that the dismountable plug can connect firmly with the socket for improving the durability of the dismountable plug.
These and other objectives of the present invention will no doubt become obvious to those of ordinary skill in the art after reading the following detailed description of the preferred embodiment, which is illustrated in the various figures and drawings.


REFERENCES:
patent: 5702259 (1997-12-01), Lee
patent: 6328581 (2001-12-01), Lee et al.
patent: 337384 (1998-07-01), None

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