Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Patent
1990-05-09
1991-08-20
Budd, Mark O.
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
310320, 310317, H01L 4108
Patent
active
050417541
ABSTRACT:
A crystal resonator device having a plurality of coupled resonators in which the relative phase and magnitude of the resonator excitation currents is controlled by electrical circuit means such as reactance components connected in series with one or more of the resonators to thereby minimize or otherwise control the acceleration sensitivity of the device.
REFERENCES:
patent: 2859346 (1958-09-01), Firestone
patent: 2886787 (1959-05-01), Broadhead
patent: 3739299 (1973-06-01), Adler
patent: 3882332 (1975-05-01), Frymoyer
patent: 3980905 (1976-09-01), Miller
patent: 4833358 (1989-05-01), Suzuki et al.
"Communications Systems Benefit from Monolithic Crystal Filters", by R. Smythe, Electronics, 1-31-72, pp. 48-51.
Budd Mark O.
Dougherty Thomas M.
Piezo Technology Inc.
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