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:
Feb. 27, 2007
Filed:
Apr. 11, 2005
Lior Shiv, Hillerode, DK;
Izhak Rafaeli, Haifa, IL;
Ze′ev Ganor, Herzelia, IL;
Nir Karasikov, Haifa, IL;
Hanna Dodiuk-kenig, Haifa, IL;
Lior Shiv, Hillerode, DK;
Izhak Rafaeli, Haifa, IL;
Ze′ev Ganor, Herzelia, IL;
Nir Karasikov, Haifa, IL;
Hanna Dodiuk-Kenig, Haifa, IL;
Nanomotion Ltd., Yokneam, IL;
Abstract
A piezoelectric vibrator comprising: a thin rectangular piezoelectric plate formed of a material having a Young's modulus having two short edge surfaces and two long edge surfaces and two large planar face surfaces which plate has transverse resonant vibration modes parallel to its short edges and longitudinal resonant vibration modes parallel to its long edges and is formed with at least one cavity; and at least one electrode on each of the planar surfaces that is electrifiable to excite at least one vibration mode of the plate, wherein the at least one cavity is not filled with a material having a Young's modulus substantially equal to the Young's modulus of the material from which the plate is formed, such that the presence of the at least one cavity shifts a resonant frequency of at least one vibration mode of the plate with respect to the resonant frequency that characterizes the at least one vibration mode in the absence of the at least one cavity.