Supports – Brackets – Specially mounted or attached
Reexamination Certificate
2000-04-21
2001-11-20
King, Anita (Department: 3632)
Supports
Brackets
Specially mounted or attached
C248S214000
Reexamination Certificate
active
06318686
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to a bracket for an electric pole which a circuit breaker or a lightning arrester can be mounted thereto, and particularly to a bracket which is vertically fixed to a fixing device for fixing high-tension wire of an electric pole so that it prevents birds from building a nest on the electric pole and accordingly leakage of electricity or stoppage of electric current may be prevented.
BACKGROUND OF THE INVENTION
Generally, a high-tension wire for transferring high-tension power is set over an electric pole placed in outdoor and
FIG. 5
shows a conventional telegraph pole in part. In
FIG. 5
, there is a fixing device
9
which is horizontally installed on an electric pole
10
and a second fixing device
9
′ under the fixing device
9
. The fixing device
9
supports three high-tension wires
11
and the second fixing device
9
′ is installed with a circuit breaker
12
or a lightning arrester (not shown) which is electrically connected with the high-tension wires
11
. The circuit breaker
12
is connected with a transformer
14
placed below thereof so that it may break overvoltage.
Recent times, birds such as magpies and swallows build nests with branches of a tree or pieces of iron wire on electric poles
10
over which high-tension wires
11
are set, especially on the second fixing device
9
′ that is suitable place to build nests. The pieces of iron wire used for building a nest cause a short circuit by transmitting electricity among the high-tension wires
11
or an interruption of electric power by short circuit.
Accordingly, up to now various devices have been worked out to prevent these accident: a worker removes birds' nests directly, puts a convex cover on the horizontal fixing device in order not to build a nest on an electric pole, or installs shining means by the reflected light of the sun or rotating means such as vane to prevent birds from approaching.
Another device puts a container filled with fluid or emulsion polymer on a fixing device of the electric pole which creates an unpleasant feeling in birds that come around the container, thereby causing them to fly away.
However, birds are used to building a new nest on the same electric pole. Accordingly, there was a problem to repeat removal work that should mobilize lots of manpower and equipments.
Moreover, as time passed, birds build nests again on the electric poles with evading the hinderers installed. Therefore, the fundamental problem can not be solved.
SUMMARY OF THE INVENTION
In view of the drawbacks with the conventional art, the present invention was created to solve those drawbacks and to provide a bracket for an electric pole which prevents an electric leakage or an interruption of electric power due to a birds' nest.
REFERENCES:
patent: 1029207 (1912-06-01), Megahan
patent: 1865134 (1932-06-01), Plimpton
patent: 1896740 (1933-02-01), Cosseboom
patent: 3794751 (1974-02-01), Farmer et al.
patent: 3868615 (1975-02-01), Haibein et al.
patent: 5534858 (1996-07-01), Tinkham
patent: 6070584 (2000-06-01), Bergstrom
patent: 09322699 (1997-12-01), None
Agarwal, P.C. Dinesh
King Anita
Sy Holly N.
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