Prestressed piezoelectric accelerometer

Details Prestressed piezoelectric accelerometer Prestressed piezoelectric accelerometer

1980-02-07

1982-11-16

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

H01L 4108

Patent

active

043596584

ABSTRACT:
Accelerometer of the spring-mass type comprising, in a housing, a balanced vibrating mass, a spring constituted by at least one hollow piezoelectric element situated between the mass and the housing, as well as a fastening element traversing the mass and secured to the housing.
In addition, a prestressing element situated between the fastening element and a recess provided in the mass urges the latter towards the housing. The piezoelectric element surrounding the mass is then compressed. The point of application of the prestressing force and the center of gravity of the mass are in the same median plane of the piezoelectric spring, which plane is transversal and perpendicular to the axis of the housing.

REFERENCES:
patent: 3075099 (1963-01-01), Shoor
patent: 3206626 (1965-09-01), Burley
patent: 3229128 (1966-01-01), Faulk
patent: 3233465 (1966-02-01), Tolliver
patent: 3389276 (1968-06-01), Gradin et al.
patent: 4104921 (1978-08-01), Nissl

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