Back to results
US 11,998,717 B2Granted
Piezoelectric motor and injection device
AssigneePiezo Sonic Corporation.
InventorKouhei Tada
Life of this patent
Estimating the term…
Abstract
A piezoelectric motor includes: a stator having an elastic body, a piezoelectric element and a sliding member adhesively attached to the elastic body; a rotor having an annular member, which includes a disc spring portion and a basic body portion in contact with the sliding member, and a fixture portion to which the annular member is fixed; and a shaft that rotates with the rotor, wherein the disc spring portion of the annular member is fixed to the fixture portion which is fixed to the shaft.
Claims15
A piezoelectric motor comprising:
- a stator having an elastic body, and a piezoelectric element and a sliding member adhesively attached to the elastic body;
- a rotor having an annular member, which includes a disc spring portion and a basic body portion in contact with the sliding member, and a fixture portion to which the annular member is fixed;
- and
- a shaft that rotates with the rotor,
- wherein the disc spring portion of the annular member is fixed to the fixture portion which is fixed to the shaft.
2 more elements
A piezoelectric motor comprising:
- a stator having an elastic body, and a piezoelectric element and a sliding member adhesively attached to the elastic body;
- a rotor having a disc spring portion, and a basic body portion in contact with the sliding member;
- and
- a shaft that rotates with the rotor,
- wherein an annular groove is formed between the disc spring portion and the shaft.
2 more elements
Dependencies are inferred from the claim text.