Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Patent
1981-05-21
1983-08-09
Yasich, Daniel M.
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
374117, H01L 4108, H03H 925
Patent
active
043981151
ABSTRACT:
A quartz crystal plate (L) is used in determining the frequency of a frequency generator, and the frequency determined by said plate is variable as a function of temperature. The quartz plate constitutes the substrate for a surface acoustic wave device, e.g. a resonator or a delay line using comb transducers (1 & 2). The orientation in the quartz crystal of the plane over which the acoustic wave propagates, and the direction of propagation in said plane are defined in terms of a doubly rotated frame of reference as follows: the plate being a double rotation cutting plate defined by yxwl: .phi./.theta., one large surface of which is used for the propagation of a surface wave whose direction of propagation makes an angle .psi. with the second axis of rotation, where the first angle .phi. lies in the range 9.degree.24' to 13.degree.24', the second angle .theta. lies in the range 57.degree.24' to 61.degree.24', and the angle .psi. lies in the range 33.degree. to 37.degree..
REFERENCES:
patent: 3879992 (1975-04-01), Bartera
patent: 3987377 (1976-10-01), Kuroda et al.
patent: 4006435 (1977-02-01), Kerbel
patent: 4249418 (1981-02-01), Ebata
patent: 4345176 (1982-08-01), Grudkowski et al.
Publ., "Handbook of Piezoelectric Crystals for R. E. Designers", by J. P. Buchanan, (pp. 18-22), 12/1954, TK 656507 P5.
Publ. "Quartz Frequency Thermometer", by A. G. Smagin et al., May, Jun. 1970, Instr. & Exp. Tech. (USA-No. 3), pp. 932-934.
Coquerel Roger
Gagnepain Jean-Jacques
Hauden Daniel
Pegeot Claude
Centre National de la Recherche Scientifique "CNRS"
Quartz et Electronique
Yasich Daniel M.
LandOfFree
Temperature probe using a plate of quartz does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Temperature probe using a plate of quartz, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Temperature probe using a plate of quartz will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-589102