Beam-type accelerometer

Details Beam-type accelerometer Beam-type accelerometer

2006-04-04

2006-04-04

Kwok, Helen (Department: 2856)

Measuring and testing

Speed, velocity, or acceleration

Acceleration determination utilizing inertial element

C073S514340, C073S514360

Reexamination Certificate

active

07021141

ABSTRACT:
An accelerometer has a cantilever beam supported at one end and having an opposite free end with a longitudinal direction between the supported end and the free end, the beam being formed of a piezoelectric layer and a supporting layer. An inertial, sensing mass is mounted at the free end of the beam, and is located eccentrically relative to the longitudinal direction of the beam. The accelerometer has a primary direction of sensitivity to acceleration forces, and a secondary direction of sensitivity, which is orthogonal to the primary direction and in which the sensitivity is negligible. The secondary direction forms an angle relative to the longitudinal direction of the beam such that a line coinciding with a force proceeding through the center of gravity of the inertial mass, and which is directed in the secondary direction, also intersects the beam.

REFERENCES:
patent: 5425750 (1995-06-01), Moberg
patent: 0 355 289 (1990-02-01), None
patent: 2 175 090 (1986-11-01), None
patent: 2 224 599 (1990-05-01), None
patent: 5-273227 (1993-10-01), None
patent: 6-27137 (1994-02-01), None
patent: WO 89/00294 (1989-01-01), None

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