The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 25, 2025
Filed:
Jan. 29, 2021
Lg Innotek Co., Ltd., Seoul, KR;
Sang Young Lee, Seoul, KR;
Myoung Seok Sung, Seoul, KR;
LG INNOTEK CO., LTD., Seoul, KR;
Abstract
Disclosed are an ultrasonic linear motor and a method of driving the same. The ultrasonic linear motor includes a vibrator including an elastic portion and a first piezoelectric element and a second piezoelectric element which are disposed on two surfaces of the elastic portion, a moving shaft coupled to the vibrator and moved according to a displacement of the vibrator, a mover inserted into and coupled to the moving shaft, and a controller which applies a first driving pulse and a second driving pulse to the first piezoelectric element and the second piezoelectric element, wherein a frequency of the first driving pulse and a frequency of the second driving pulse are set to a frequency between a resonant frequency at which an impedance is minimum and an anti-resonant frequency at which the impedance is maximum.