Patent ID: 8531790

Claim:
A linear actuator assembly comprising: a first linear actuator, the first linear actuator including a rod extending from a base, the base including a piezoelectric component to selectively oscillate the rod; an elongated cylindrical guide spaced in parallel alignment with the rod of the first linear actuator; a movable carriage, the carriage including a first notch to receive the rod of the first linear actuator and a second notch to receive the guide, and the carriage in direct and continuous contact with the first linear actuator and the guide at the first notch and the second notch, respectively, when the carriage moves linearly back and forth along a travel axis; a first spring coupled to the carriage to urge the first linear actuator into contact with the first notch of the carriage; and a second spring coupled to the carriage to urge the guide into contact with the second notch of the carriage, and wherein the first spring and the second spring are flat cantilever springs coupled to the carriage remote from the first notch and the second notch, respectively.