Electrically controlled mechanical positioning device

Details Electrically controlled mechanical positioning device Electrically controlled mechanical positioning device

1981-10-15

1984-03-20

Wong, Peter S.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310332, H04R 1700, H01L 4108

Patent

active

044383630

ABSTRACT:
To provide for extremely fast response of positioning of a positioned element (3) operating within a guide bore (2) formed in a housing (1), upon application of a force, for example by loading of a spring (14), the element (3) is a hollow body (4) within which a stack assembly (5) of piezoelectric disks (6) is located, the piezoelectric disks expanding or contracting under application of electrical energy from a cable (11) against an elastomer disk or cushion (9) which, consequently, will elastically expand the side walls of the body (4) to clamp the element (3) in the guide bore (2) and permit release, for example, at time of maximum applied force to result in abrupt, sudden high operating force and acceleration of the positioned element. Positioning times of between 10 to 100 microseconds can be obtained.

REFERENCES:
patent: 2587482 (1952-02-01), Keller
patent: 3598506 (1971-08-01), O'Neill
patent: 3608409 (1971-09-01), Schmidt
patent: 3766415 (1973-10-01), Dame et al.
patent: 3903435 (1975-09-01), Bouygues et al.
patent: 4113387 (1978-09-01), Shutt
patent: 4219755 (1980-08-01), O'Neill et al.

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