Lead magnesium niobate actuator for micropositioning

Details Lead magnesium niobate actuator for micropositioning Lead magnesium niobate actuator for micropositioning

1993-03-30

1994-10-25

Dougherty, Thomas M.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310344, H01L 4108

Patent

active

053592522

ABSTRACT:
An improved lead magnesium niobate actuator is disclosed comprising a cylindrical lead magnesium niobate crystal stack mounted in a cylindrical casing wherein a bias means, such as one or more belleville washers, is located between one end of the crystal stack and a partially closed end of the casing; and adjustment means are provided which bear against the opposite end of the crystal stack, whereby an adjustable compressive force is constantly applied against the crystal stack, whether the crystal stack is actuated in an extended position, or is in an unactuated contracted position. In a preferred embodiment, cooling ports are provided for the circulation of coolant in the actuator to cool the crystal stack, and provision is made for removal and replacement of the crystal stack without disconnecting the actuator from the external device being actuated.

REFERENCES:
patent: 3075098 (1963-01-01), Shoor
patent: 3167951 (1965-02-01), Wintriss
patent: 4460842 (1984-07-01), Waanders et al.
patent: 4588268 (1986-05-01), Aldrich
patent: 4657358 (1987-04-01), Anthony et al.
patent: 4679915 (1987-07-01), Kriz et al.
patent: 4781477 (1988-11-01), Nagasawa
patent: 4845399 (1989-07-01), Yasuda et al.
patent: 4899076 (1990-02-01), Kato
patent: 4932119 (1990-06-01), Ealey et al.
patent: 5074654 (1991-12-01), Alden et al.
patent: 5113108 (1992-05-01), Yamashita et al.
patent: 5166907 (1992-11-01), Newnham et al.
patent: 5205147 (1993-04-01), Wada et al.
patent: 5210653 (1993-05-01), Schell

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