Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Patent
1979-04-12
1981-02-03
Budd, Mark O.
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
310316, 310328, H01L 4108
Patent
active
042491002
ABSTRACT:
The vibration motor comprises adjoining working and feed-back piezoelectric cells, one of which is in contact with one of the stages of a concentrator of ultrasonic vibrations, whose other stage is pressed to one of the rotor surfaces. The working piezoelectric cell is connected with the output of an electric oscillator, the feed-back piezoelectric cell is coupled to the oscillator sync input. Provision is made in the vibration motor for a means for rotation frequency control of the rotor by changing the hold-down force pressing the driving stage of the concentrator of ultrasonic vibrations to the rotor surface and/or by maintaining the amplitude of ultrasonic vibrations of the driving stage of the concentrator at a preset level, or by varying the hold-down force of the driving stage of the concentrator of ultrasonic vibrations alongside with changing the amplitude of ultrasonic vibrations of the concentrator driving stage.
REFERENCES:
patent: 3447051 (1969-05-01), Attwood et al.
patent: 3666599 (1972-05-01), Obeda
patent: 3889166 (1975-06-01), Scurlock
patent: 4019073 (1977-04-01), Vishnevsky et al.
patent: 4065687 (1977-12-01), Mishiro
Beksha Gabrieljus-Vitautas L.
Kaminskas Vitautas A.
Klimavichjus Prantsishkus-Algirdas R.
Kondratiev Alexandr V.
Matsjukyavichjus Juozas J.
Budd Mark O.
Nissen J. Harold
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