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Patent Searching and Data


Title:
EARTH TREMOR DETECTING POWER SOURCE BREAKER
Document Type and Number:
Japanese Patent JP2009059554
Kind Code:
A
Abstract:

To provide an earth tremor detecting power source breaker which solves a problem that an ordinary household has no countermeasure for a feared frequent earthquake and which can make a sensitivity adjustment after installation in a simple way so that the same can easily be used for every family and for all electric appliances and gas units respectively and which has a reduced cost by making simple a structure of an electric circuit.

The earth tremor detecting unit is provided with a magnet of a same polarity on a bottom side and a magnet of different polarity on an upper side in order that the magnet can be suspended in a nonmagnetic pipe by utilizing a repulsive force of the same polarity of magnets. If the detecting unit tremors, the suspended magnets move up and down and right and left and this principle is utilized. A conductive piece for establishing a circuit electrically is housed in a mini-pipe, and one electric on-off switch is provided and if a tremor occurs and it is detected, a contact circuit of the on-off switch is formed. Furthermore, a sensitivity adjustment after installation is made by a nut for a height position adjustment provided on a screwed holder of a suction magnet on the upper side.


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Inventors:
Kajita, Hisayoshi
Application Number:
JP2007000225267
Publication Date:
March 19, 2009
Filing Date:
August 31, 2007
Export Citation:
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Assignee:
KAJITA HISAYOSHI
International Classes:
H01H35/14