Rotary or linear electric motor whose armature is driven by mean

Details Rotary or linear electric motor whose armature is driven by mean Rotary or linear electric motor whose armature is driven by mean

1988-10-19

1989-11-28

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

H01L 4108

Patent

active

048840025

ABSTRACT:
Armature (4) is driven by piezo-electric vibration elements (1) which are made to resonate by means of high-frequency electrical oscillations in order to produce ultrasonic vibrations which are transmitted to a plurality of drive pins (2) arranged as brushes a friction surface (6) of the armature (4) is pressed against free ends (5) a of the pins, the individual drive pins bein disposed at an angle .alpha. relative to the perpendicular to the contact portion of the friction surface (6). The angle of inclination .alpha. is then substantially equal to the static-friction angle or is slightly larger than this static-friction angle between the drive pins and the friction surface. Suitably, the angle of inclination is selected to be between 10.degree. and 30.degree..

REFERENCES:
patent: 4325264 (1982-04-01), Sashida
patent: 4400641 (1983-08-01), Vishneusky et al.
patent: 4453103 (1984-06-01), Vishneusky
patent: 4548090 (1985-10-01), Sashida
patent: 4692650 (1987-09-01), Okumura et al.

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