Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Patent
1982-02-11
1983-08-16
Budd, Mark O.
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
310331, 310321, H01L 4108
Patent
active
043993869
ABSTRACT:
A rotative motor includes a member mounted to rotate freely. A plurality of piezoelectric bimorph elements are radially secured at one end to a support in a two-staged shape comprising upper and lower arrays of the elements. A plurality of elastic members connect the free end of each one of the upper elements with the free end of a different one of the lower elements. Each pair of inter-connected elements is excited from a source of alternating current so that the free ends of the respective elements vibrate ninety degrees out of phase. The central point of each elastic member connected between the free ends of the one upper and one lower elements is in frictional contact with the rotatable member. The central point of each elastic member exhibits a closed loop path, imparting a rotary motion to the rotatable member.
REFERENCES:
patent: 2195417 (1940-04-01), Mason
patent: 3297889 (1967-01-01), Breskend
patent: 3781955 (1974-01-01), Lavrinenko et al.
patent: 4019073 (1977-04-01), Vishnevsky et al.
patent: 4339682 (1982-07-01), Toda et al.
Paper by G. Arlt, et al., presented to "Electromechanical Design", published in Oct. 1972.
Osaka Susumu
Toda Minoru
Bruestle Glenn H.
Budd Mark O.
RCA Corporation
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