Electrical generator or motor structure – Educational or construction units or kits
Patent
1974-05-02
1976-03-16
Budd, Mark O.
Electrical generator or motor structure
Educational or construction units or kits
310 82, 310 96, 310 97, 310 95, H01l 4108
Patent
active
039448622
ABSTRACT:
A flexural mode quartz crystal vibrator formed from a quartz crystal plate having first and second opposed substantially planar surfaces, with a plurality of electrodes on both said surfaces is provided. The vibrator is characterized by the placement of electrodes on both of the opposed surfaces so that the electrodes on each surface do not overlap each other.
REFERENCES:
patent: 2081405 (1937-05-01), Mason
patent: 2262966 (1941-11-01), Rohde
patent: 2373431 (1945-04-01), Sykes
patent: 3128397 (1964-04-01), Shinada et al.
patent: 3408515 (1968-10-01), Morse
patent: 3614483 (1971-10-01), Berlincourt
patent: 3683213 (1972-08-01), Staudte
Ogata Toshiaki
Oguchi Kikuo
Shimoi Akio
Budd Mark O.
Kabushiki Kaisha Suwa Seikosha
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