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:
Mar. 07, 2023
Filed:
Sep. 17, 2018
Covidien Lp, Mansfield, MA (US);
Xiaosen Liu, College Station, TX (US);
Adrian I. Colli-Menchi, College Station, TX (US);
James A. Gilbert, Boulder, CO (US);
Daniel A. Friedrichs, Aurora, CO (US);
Keith W. Malang, Longmont, CO (US);
Edgar Sanchez-Sinencio, College Station, TX (US);
COVIDIEN LP, Mansfield, MA (US);
Abstract
An ultrasonic motion generator includes a non-resonant inverter, an ultrasonic transducer, and a comparator. The non-resonant inverter inverts direct current (DC) to alternating current (AC) having a first frequency. The ultrasonic transducer is electrically coupled with the non-resonant inverter and generates an ultrasonic motion based on the inverted AC. The comparator automatically detects a deviation of the first frequency from a resonant frequency of the ultrasonic transducer based on motion current passing through the ultrasonic transducer and generates an output signal based on the deviation to drive the non-resonant inverter.