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. 18, 1984
Filed:
Jun. 20, 1983
Takeshi Nakamura, Kyoto, JP;
Hiroshi Nishiyama, Kyoto, JP;
Satoshi Matsuda, Kyoto, JP;
Tsutomu Okada, Kyoto, JP;
Murata Manufacturing Co., Ltd., Kyoto, JP;
Abstract
A piezoelectric tuning fork vibrator used as an oscillator or a detection element in various electronic circuits, which is provided at a vibrator body with a slit to form tuning fork legs at both sides, one leg at the vibrator having at the outside surface a piezoelectric thin film and an electrode thereon, so that the one leg including the piezoelectric thin film and electrode, is made equal in width to the other leg. Hence, the both side tuning fork legs equal in width become equal in the resonance frequency and avoids leakage of vibration energy, whereby this piezoelectric vibrator is free from characteristic variation and has a high accuracy.