Acceleration sensor

Details Acceleration sensor Acceleration sensor

1993-06-08

1994-12-20

Hoff, Marc S.

Electricity: circuit makers and breakers

Special application

Change of inclination or of rate of motion responsive

200 6153, 200275, H01H 3514

Patent

active

053747933

ABSTRACT:
The acceleration sensor is formed of a cylinder; an inertial member slidably mounted in the cylinder so as to be movable in the longitudinal direction of the cylinder; a conductive member fixed at least on an end surface of the inertial member facing one longitudinal end of the cylinder; a pair of electrodes fixed relative to the cylinder at one longitudinal end of the cylinder and which, when the conductive member of the inertial member makes contact with the electrodes, are caused to conduct via the conductive member; and an attracting member fixed relative to the cylinder near the other longitudinal end of the cylinder, for magnetically attracting the inertial member. The electrodes are formed by a metal sheet whose basal ends are held by an electrode holding member and whose front ends are protruding in the travel area of the inertial member, and one of planes of the metal sheet is disposed so that it faces to the inertial member. In the acceleration sensor, the edge portions of the sheet metal forming the electrode are bent in the direction opposite to the inertial member.

REFERENCES:
patent: 4642891 (1987-02-01), Weik et al.
patent: 4827091 (1989-05-01), Behr
patent: 4933515 (1990-06-01), Behr et al.
patent: 5053588 (1991-10-01), Bolender
patent: 5210384 (1993-05-01), Shimozono et al.

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