Inchworm actuator

Details Inchworm actuator Inchworm actuator

1993-06-07

1994-07-26

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310369, H01L 4108

Patent

active

053329422

ABSTRACT:
This invention relates to inchworm linear motors or piezoelectric linear actuators and in particular to designs which address difficulties associated with miniaturization, the primary one being that the clamping driver is typically oriented laterally to the drive direction and when the lateral dimension becomes very small there is not sufficient displacement of the clamping driver to allow a practical clamping. That is, the tolerance required for the device dimensions would then be prohibitively small. This problem is overcome by orienting the clamping drivers longitudinally, i.e. parallel, to the drive direction, thereby permitting the length of said clamping drivers to be significantly greater than for the prior art case of lateral orientation. An additional feature re-directs the longitudinal clamp-drive to a lateral direction for clamping of the driven element.

REFERENCES:
patent: 3138749 (1964-06-01), Stibitz
patent: 3902084 (1975-08-01), May, Jr.
patent: 4570096 (1986-02-01), Hara et al.
patent: 4798989 (1989-01-01), Miyazaki et al.
patent: 4874979 (1989-10-01), Rapp
patent: 5027027 (1991-06-01), Orbach et al.
patent: 5173605 (1992-12-01), Hayes et al.
patent: 5214342 (1993-05-01), Yang

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