Piezoelectric actuator with compensator

Details Piezoelectric actuator with compensator Piezoelectric actuator with compensator

2006-01-10

2006-01-10

Scherbel, David A. (Department: 3752)

Fluid sprinkling, spraying, and diffusing

With means to vibrate or jiggle discharge

By electric transducer

C239S102100, C239S585100, C239S533700, C239S533800, C239S533900, C239S533110

Reexamination Certificate

active

06983895

ABSTRACT:
A temperature compensated actuator device comprises a piezoelectric stack having first and second ends along a central axis and having a first thermal expansion coefficient; and a compensator arranged on one end of the piezoelectric stack. The compensator comprises a first member in form of a cylinder; a second member in form of a piston plate wherein the first member and the second member are arranged movably along the axis with respect to each other and define a hollow space between them; and a compensation member having a thermal expansion coefficient higher than the first thermal expansion coefficient for filling the hollow space.

REFERENCES:
patent: 6213414 (2001-04-01), Stier et al.
patent: 6400066 (2002-06-01), Sumrak et al.
patent: 6575138 (2003-06-01), Welch et al.
patent: 6585171 (2003-07-01), Boecking
patent: 6650032 (2003-11-01), Sumrak et al.
patent: 6676035 (2004-01-01), Lorraine et al.
patent: 6749127 (2004-06-01), Lorraine et al.
patent: 6755353 (2004-06-01), Lorraine et al.
patent: 6766965 (2004-07-01), D'Arrigo
patent: 6776354 (2004-08-01), Cooke
patent: 6843464 (2005-01-01), Stoecklein et al.

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