Electricity: circuit makers and breakers – Special application – Change of inclination or of rate of motion responsive
Patent
1990-10-31
1992-09-22
Pellinen, A. D.
Electricity: circuit makers and breakers
Special application
Change of inclination or of rate of motion responsive
200 6145R, 200 6152, 200 6153, H01H 3514
Patent
active
051499266
ABSTRACT:
An acceleration sensor has a spherical inertial mass (2) formed of a magnetic material. A magnet (3) has a holding part (3a) for normally holding the inertial mass (2) seated thereat. A switch changeover member (5) is actuatable by the inertial mass (2) when the inertial mass (2) moves out of the holding part (3a) onto one surface (3b) of the magnet (3) upon exertion of acceleration having a predetermined or larger magnitude on the inertial mass (2), for changing the position of a switch (4). A magnetic member (6) is secured to the other surface (3c) of the magnet (3), with one end thereof located in the holding part (3a), and the other end thereof shaped to cover an opposed end of the magnet (3), in a manner such that magnetic lines of force are generated in a manner being concentrated around the holding part (3a) of the magnet (3) and on the opposed end of same. Alternatively, the inertial mass (2) is normally mechanically held at a holding part (3a, 5e), and the magnetic member (6) has one end thereof shaped to cover an opposed and of the magnet (3), in a manner such that magnetic lines of force are generated in a manner being concentrated solely on the opposed end of the magnet.
REFERENCES:
patent: 3927286 (1975-12-01), Fohl
patent: 4326111 (1982-04-01), Jackman
patent: 4533801 (1985-08-01), Jackman
Le D.
Nippon Seiko Kabushiki Kaisha
Pellinen A. D.
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