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:
Sep. 30, 2025
Filed:
May. 10, 2023
Zevex, Inc., Salt Lake City, UT (US);
Larry Clayton, Farmington, UT (US);
Zevex, Inc., Salt Lake City, UT (US);
Abstract
An ultrasonic handpiece assembly has a horn, a rear mass attached to a rear end of the horn, a needle attached to a front end of the horn, a stack of piezoelectric elements arranged coaxially about the horn, and an L-T spring arranged coaxially about the horn behind the stack. The horn includes a low gain section in front of the stack and a high gain section in front of the low gain section. The assembly has a first L-T mode, a T mode, a second L-T mode, and an L mode at different resonant frequencies. The low gain horn section includes a circumferential groove located at a vibrational node of the L-T mode. Frequency separation between the first L-T mode and T mode results in torsional vibration of the first L-T mode interacting constructively with torsional vibration of the T mode, thereby increasing torsional stroke in the T mode.