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. 23, 1993
Filed:
Mar. 08, 1991
Jean Hermann, Neuchatel, CH;
Abstract
A piezoelectric resonator containing two rectangular parallelepipedal slices including N and M base structures, respectively, wherein N and M are integers. The two rectangular parallelepipedal slices each include at least one base structure shaped as a thin crystal slice of piezoelectric material in the form of a rectangular parallelepiped. A non-resonant arm connects the two rectangular parallelepipedal slices in juxtaposition in a single plane. An embedding zone is connected to the arm through a connection zone so as to fix the resonator outside a center thereof. Electrodes are disposed on opposite surfaces of the two rectangular parallelepipedal slices and are polarized to excite preferentially the Nth harmonic of a fundamental contour vibration mode in each base structure, and to produce respective extension modes in the two rectangular parallelepipedal slices in a direction perpendicular to an axis of the non-resonant arm.