Earthquake alarm

Signals and indicators – Combined functions – Alarms with indicators

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

116203, 116162, G08B 700, G10K 100

Patent

active

056828349

ABSTRACT:
The present invention relates to an earthquake alarm that functions as an awakening and early warning mechanism which provides an audio and visual warning to a possible earthquake. The device is comprised of a free-standing arm which rests against an adjustable rod which can be manipulated to make the arm more or less sensitive to vibrations, The arm, which is pivotally mounted within a case, swings downwardly through a slot in the case when vibrations comparable to the vibrations of an earthquake cause the arm to be dislodged from its upright position. The arm is entrapped between two tabs that extend outwardly from a rotatably attached beam. The beam comprises a third tab which is secured against one distal end of a rocker arm, the opposite distal end of the rocker arm being engaged in the extended teeth of a spring loaded wheel. A vibration sufficient to cause the arm to be dislodged from its upright position and swing downwardly causes the beam to rotate in conjunction with the arm thereby releasing the rocker arm. A spring located underneath the wheel spins causing the rocker arm to repeatedly strike a bell. To reset the device, an individual is required to rewind the spring in order to reposition the arm in an upright position.

REFERENCES:
patent: 315838 (1885-04-01), Reiff
patent: 746147 (1903-12-01), Peters
patent: 1443402 (1923-01-01), Weitzman
patent: 2085860 (1937-07-01), Lambert
patent: 2469528 (1949-05-01), Suma, Sr.
patent: 2632887 (1953-03-01), Rusnak
patent: 4058134 (1977-11-01), Komatsu et al.
patent: 4124841 (1978-11-01), Kettunen
patent: 4297690 (1981-10-01), Baker
patent: 4484186 (1984-11-01), Wood et al.
patent: 4764761 (1988-08-01), Maguire, III
patent: 4764762 (1988-08-01), Almour
patent: 5278540 (1994-01-01), Caban-Domenech
patent: 5408862 (1995-04-01), Elkins

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Earthquake alarm does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Earthquake alarm, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Earthquake alarm will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-1825037

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.