Vibration wave driven motor

Details Vibration wave driven motor Vibration wave driven motor

1993-07-06

1995-09-05

Dougherty, Thomas M.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310366, H02N 200, H01L 4108

Patent

active

054481279

ABSTRACT:
A vibration wave driven motor having an electro-mechanical energy conversion member for generating a vibration wave in an elastic member. This conversion member has first and second surfaces opposite to each other, and first and second surfaces respectively formed on the first and second electrodes to receive an applied electrical signal. The first electrode is formed in a position such as to face one side of the elastic member and has an electrical signal input terminal provided on the second surface side of the conversion member. This input terminal and the first electrode are electrically connected by, for example, a conductor formed in a through hole. It is thereby possible to supply an electric current to each electrode with reliability while maintaining the conversion member and the elastic member in desired close contact with each other.

REFERENCES:
patent: 2472179 (1949-06-01), Tibbbetts
patent: 4504760 (1985-03-01), Yamamoto et al.
patent: 4513219 (1985-04-01), Katsuma et al.
patent: 4633122 (1986-12-01), Padice
patent: 4983874 (1991-01-01), Yamaguchi
"Flexure Mode Oscillators", Author unknown, Marconi Review, vol. XVI, No. 111, Oct. 15, 1953 pp. 145 and 150 only.

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