Electricity: conductors and insulators – Boxes and housings
Reexamination Certificate
2001-08-21
2003-04-15
Dinkins, Anthony (Department: 2831)
Electricity: conductors and insulators
Boxes and housings
C174S053000, C174S135000, C174S060000, C220S004020, C363S142000, C439S023000, C439S029000
Reexamination Certificate
active
06548755
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a power supply adapter, and more particularly relates to a power supply adapter with a foldable plug which has bendable structure and dual power outputs.
2. Description of the Prior Art
As shown by
FIG. 1
, the conventional mobile phone power supply adapter includes a cord
11
extending from one end of the adapter casing
1
. The other end of cord
11
is connected with a lighter plug
12
which may be inserted into a known cigarette lighter. A cord
13
extends from the other end of the adapter casing
1
and is connected with a power output plug
14
which may be inserted into a power input socket of a mobile phone. Currently, cigarette lighter becomes a standard accessory in cars and is also commonly available in airplanes.
In addition to the automobile lighter, power socket specially designed for mobile phones and notebooks is also equipped under the seats of airplane. As shown in
FIG. 2
, a cord
21
extends from one end of the power supply adapter casing
2
. Then the cord
21
is connected to a plug section
22
, which is inserted into a standard double-hole socket. The plug section
22
includes two metal prongs
221
,
222
and a buckle
223
on the front ring end thereof. A cord
23
extends from the other end of the power supply adapter casing
2
and is connected to a mobile phone plug
24
for insertion into a power input socket of a mobile phone (not shown). However, the front end of the plug section
22
is connected to a connector
25
before plugging in and using a cigarette lighter for power supply. The front end of connector
25
is a cigarette lighter socket
251
, while the rear end is a double-hole socket
252
. There is two contact holes
253
,
254
and an opening area
255
one the double-hole socket
252
. When the plug section
22
is connected into the double-hole socket
252
, the metal prongs
221
,
222
are precisely inserted into the contact holes
253
,
254
of the double-hole socket
252
, and the buckle
223
fastens the opening area
255
.
The power connecting device becomes extraordinarily long after the foregoing process is completed. Users may encounter unexpected difficulties. The power connecting device may be easily obstructed by the nearby objects.
Moreover, some users may use more than two electrical appliances (such as mobile phone and portable computer) at the same time and therefore, two different adapters are required. In other words, it is very inconvenient that users have to bring and use extra adapters constantly.
SUMMARY OF THE INVENTION
Thus, an object of the present invention is to provide a power supply adapter with a foldable plug, which can be folded up to an appropriate angle according to application situation.
Another object of the invention is to provide an adapter with improved structure, which can effectively reduce the length of whole connection, and minimize the space requirement at use.
Another object of the present invention is to provide a power supply adapter with extended cable and connector for connecting and charging a mobile phone or another electrical appliances. The adapter is further formed with a battery receptacle thereon for charging a mobile phone battery.
The present invention will be apparent in its contents of technique after reading the detailed description of the preferred embodiments of the present invention in reference to the accompanying drawings, wherein:
REFERENCES:
patent: 2070211 (1937-02-01), Mehr
patent: 3033913 (1962-05-01), Dietze
patent: 3256428 (1966-06-01), Schwartz
patent: 5658152 (1997-08-01), Selker
patent: 6362421 (2002-03-01), Layton, Jr.
patent: 6433274 (2002-08-01), Doss et al.
patent: 6452108 (2002-09-01), Major
patent: 6486397 (2002-11-01), Lee
Dinkins Anthony
Formosa Electronic Industries Inc.
Patel Dhiru R
Rosenberg , Klein & Lee
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