Communications: electrical – Condition responsive indicating system – Specific condition
Reexamination Certificate
2000-04-03
2001-05-15
Lefkowitz, Edward (Department: 2632)
Communications: electrical
Condition responsive indicating system
Specific condition
C324S095000, C324S149000
Reexamination Certificate
active
06232881
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention relates to a device for detecting electromagnetic waves capable of the detecting it that is used for a portable telephone or which dose harm to human body.
Conventional indicator for a portable telephone, as a detector which is able to inform a user visually when the portable telephone comes to the calling-up and message received conditions or a calling condition, is composed of first and second rectifier diodes connected to a top end of the portable telephone with alternating ends thereof as to the opposite direction; first and second conductive pins connected to the other ends of the rectifier diodes with each of other ends thereof; and a luminous element connected between the first and second conductive pins.
The conventional indicator for portable telephone includes two rectifier diodes such that its structure is complex, and it costs too much. In addition, it is possible to use as the indicator only when the indicator is provided to the top end of the antenna of the portable telephone.
SUMMARY OF THE INVENTION
In view of the foregoing, it is an object of this invention to provide a device for detecting electromagnetic waves that the structure is simple, and electromagnetic waves is detected easily so that it is possible to find the sending place of electromagnetic waves. It is another object of this invention to provide a device for detecting electromagnetic waves that is attached to the antenna attachment housing of the portable telephone and allows to inform visually a user that the portable telephone comes to the calling-up and massage received conditions.
The above and further objects and novel features of the invention will more fully appear from the following detailed description when the same is read in connection with the accompanying drawings. It is to be expressly understood, however, that the drawing is for the purpose of illustration only and is not intended as a definition of the limites of the invention.
REFERENCES:
patent: 4424483 (1984-01-01), Aslan
patent: 4431965 (1984-02-01), Aslan
patent: 4692685 (1987-09-01), Blaze
patent: 6064190 (2000-05-01), Suda
Jordan and Hamburg LLP
Lefkowitz Edward
LandOfFree
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