Title: Automatic alarm for landslide or earthquake
Application Number: 98114526 Application Date: 1998.06.05
Publication Number: 1238506 Publication Date: 1999.12.15
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: G08B19/00
Applicant(s) Name: Yang Zhuwen Address: 445300
Inventor(s) Name:
Attorney & Agent:
Abstract:
     An automatic alarm device for landslide or earthquake is composed of a wooden box D fixed to wall of house, a conical weight of stainless steel A suspended from top of D by galvanized iron wire C, a galvanized iron tube B not in contact with A and C curing installation, an alarm unit H outside the wooden box, which may be electric bell, police whistle, or lamp light connected parallelly, a miniature relay J,and a circuit switch for stopping alarm. The alarm circuit is composed of J, H and K. The sensor is composed of A, B, C and D. It is powered by 220 V AC.
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