Main switch with extended multiple individual conducting plates

Details Main switch with extended multiple individual conducting plates Main switch with extended multiple individual conducting plates

2000-05-09

2001-05-08

Friedhofer, Michael (Department: 2832)

Electricity: circuit makers and breakers

Multiple circuit control

Reciprocating contact

C200S051060, C200S051110

Reexamination Certificate

active

06229105

ABSTRACT:

BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates to a main switch with extended multiple individual conducting plates, more particularly to a switch having extending conducting with multiple clips.
2. Prior Art
A conventional extension receptacle has a number of receptacle modules. Each receptacle module is controlled by an individual switch to connect or to cut the power supply. As shown in
FIG. 13
, an electrical extension receptacle comprises an extension cored receptacle A having a number of receptacle modules A
1
. Each of the receptacle modules A
1
is accompanied by a switch A
2
(various types of switches are used, i.e. switches include an indicator, or an overload protector) to control the electric power supplied to the receptacle module A
1
. As shown in
FIG. 14
, a positive terminal A
21
of the switches A
2
are respectively connected to each other by a copper wire A
6
, and then connected to one end A
31
of an overload protector A
3
. Whereas the other end A
32
of the overload protector A
3
is connected to a positive end of the incoming power supply. The other end A
22
of the switches A
2
are respectively bridged to the positive end A
11
of the corresponding receptacle modules A
1
by respective copper wires A
5
. A negative end A
23
of the switches A
2
are respectively bridged to a negative end A
12
of the corresponding receptacle modules A
1
by respective copper wires A
41
. Whereas the negative end A
23
of the first switch A
2
is connected to each negative end A
12
of the receptacle modules A
1
by a long copper wire A
4
, which connects to the incoming negative end of the power supply. The above mentioned receptacle modules A
1
of the extension cord receptacle A use the corresponding switches A
2
to individually control power being supplied. In order to have a good connection at each connecting unit between the switches A
2
and the receptacle modules A
1
, welding is used.
However, that assembly has some shortcomings, such as:
1. the process of welding may cause bad connections,
2. the assembly procedure is complicated, and
3. the labor cost is high.
SUMMARY OF THE INVENTION
It is the primary object of the present invention to provide a main switch with extending conducting plats to form direct contact points to simplify welding procedures.
It is another object of the present invention to provide a main switch with extending multiple individual conducting plates which is capable of being expanded to have more receptacle connections.
It is a further object of the present invention to provide a main switch with extending multiple conducting plates which is convenient in use and inexpensive to manufacture.


REFERENCES:
patent: 4080518 (1978-03-01), Marrero
patent: 5659209 (1997-08-01), Huen
patent: 5857870 (1999-01-01), Carter
patent: 6054657 (2000-04-01), Liao

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