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US 11,581,826 B2Granted
Linear piezoelectric motor with longer travel
AssigneeETA SA Manufacture Horlogere Suisse
InventorsPascal Lagorgette, Pascal Meyer
Life of this patent
Estimating the term…
Abstract
A linear piezoelectric motor including a passive element having an elongated shape, and a piezoelectric actuator including a resonator including a pair of arms connected at one of their ends at a connection zone, the two other ends being called free, the passive element being capable of being moved linearly between the free ends by friction of the free ends against the passive element, the passive element and the resonator being inclined with respect to one another by a non-zero angle (α) of less than 90 degrees.
Claims6
A linear piezoelectric motor, comprising:
- a passive element having an elongated shape, and
- a piezoelectric actuator including a resonator comprising a first arm and a second arm connected at respective ends at a connection zone, the two other ends being free, the passive element being configured to move linearly between the free ends by friction of the free ends against the passive element,
- wherein a longitudinal axis of the first arm is substantially parallel to a longitudinal axis of the second arm, and
- the passive element and the resonator are inclined with respect to one another by a non-zero angle of less than 90 degrees.
1 more element
A linear piezoelectric motor, comprising:
- a passive element having an elongated shape, and
- a piezoelectric actuator including a resonator comprising a pair of arms connected at one of their ends at a connection zone, the two other ends being free, the passive element being configured to move linearly between the free ends by friction of the free ends against the passive element,
- each arm comprising a main branch connected at the free end by a connector zone, the connector zone being arranged to bring the free ends to a level different than that of the main branches.
Dependencies are inferred from the claim text.