Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Patent
1992-01-17
1994-05-10
Stephan, Steven L.
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
310367, 310368, H01L 4108
Patent
active
053110960
ABSTRACT:
A width-extensional mode quartz crystal resonator formed by etching from a quartz crystal plate which is cut along a plane defined in the O-xyz coordinate system of the quartz crystal lattice by rotating the original Z plane around the x axis by a rotation angle in the range of 23.degree.-28.degree.. The quartz crystal resonator has a thickness-to-width ratio R.sub.zx in the range of 0.45-0.65. A pair of exciting electrodes are disposed on the resonator along opposed side faces perpendicular to the widthwise direction. The width-extensional mode quartz crystal resonator may be etched from a quartz crystal plate to provide a small sized resonator. A width-extensional mode vibrational portion is supported at its lengthwise sides by a pair of first bridge portions extending from a first frame portion. A pair of second bridge portions extend from a second frame portion and support the first frame at central portions of its lengthwise sides.
REFERENCES:
patent: 3375379 (1968-03-01), Royer
patent: 3699484 (1972-10-01), Berlincourt
patent: 4126802 (1978-11-01), Herman
patent: 4148530 (1979-04-01), Calderara
patent: 4167686 (1979-09-01), Fukuyo
patent: 4245173 (1981-01-01), Zumsteg et al.
patent: 4350918 (1982-09-01), Sato
patent: 4633124 (1986-12-01), Kawashima
patent: 4900971 (1990-02-01), Kawashima
patent: 4924132 (1990-05-01), Ziegler
patent: 4926086 (1990-05-01), Bourgeois et al.
Nachrichten Elektronik, vol. 34, No. 6, Jun. 1980, Heidelberg pp. 201-202, T. Frensch "Schwingquarze mit zweimal gedrehter Schnittebene verbessen die Frequenzstabilitat von Ostillatoren".
Patent Abstracts of Japan, vol. 6, No. 147 (E-123) (1025) Aug. 6, 1982.
Adams Bruce L.
LaBalle C.
Seiko Electronic Components Ltd.
Stephan Steven L.
Wilks Van C.
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