Electricity: circuit makers and breakers – Special application – Change of inclination or of rate of motion responsive
Patent
1977-02-11
1979-09-18
Scott, James R.
Electricity: circuit makers and breakers
Special application
Change of inclination or of rate of motion responsive
200 6145M, 200 6193, H01H 3510
Patent
active
041684109
ABSTRACT:
An anti-theft alarm device for household items is disclosed. The device employs a motion sensor unit subject to magnetic control such that the alarm may be disabled, set to go off or reset after being sounded. The magnetic control is applied by a magnetic probe to a conductive ball sensor normally maintained on a nonconductive area between conducting surfaces of opposite polarity. When magnetic attraction is removed the ball is free to respond to motion and complete an alarm circuit. A mounting casing is provided, which may be used to mount the motion sensing unit and alarm circuit in a compact apparatus. Additional mounting hardware is provided to enable mounting the motion sensing unit on angulated or curved surfaces. The magnetic control functions may be set by radio control.
REFERENCES:
patent: 1341267 (1920-05-01), East
patent: 1656704 (1928-01-01), Golombowski
patent: 2091148 (1937-08-01), Hughes et al.
patent: 2898415 (1959-08-01), Clurman
patent: 2898416 (1959-08-01), Clurman et al.
patent: 2997557 (1961-08-01), Gillmor et al.
patent: 3108252 (1963-10-01), Torres
patent: 3161737 (1964-12-01), Hall
patent: 3161738 (1964-12-01), Hall
patent: 3217120 (1965-11-01), Bowen et al.
patent: 3295101 (1966-12-01), Ellis
patent: 3927286 (1975-12-01), Fohl
Cummings, T. F.; IBM Tech. Disc. Bull.; "Ball Switch", vol. 15, No. 7, 12-1972, pp. 2207, 2208.
LandOfFree
Motion sensing alarm switch does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Motion sensing alarm switch, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Motion sensing alarm switch will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-898809