Contra-rotating vibrator

Details Contra-rotating vibrator Contra-rotating vibrator

1975-12-11

1978-04-18

Wyche, Benjamin W.

Machine element or mechanism

Mechanical movements

Rotary to or from reciprocating or oscillating

310115, 310 81, F16H 3300

Patent

active

040844455

ABSTRACT:
A device for producing linear vibratory motion includes, in the preferred embodiment, an electric motor of the contra-rotating type, i.e. one in which both the rotor and stator rotate about a common axis and in opposite directions. One or more pairs of eccentric weights are provided, one weight of each pair rotating with the rotor and the other with the stator. Gearing is provided to assure synchronized rotation of the rotor and stator and to determine the angle of the plane in which the weights are aligned and, hence, the plane along which the vibratory motion is directed.

REFERENCES:
patent: 1629206 (1927-05-01), Dollmann
patent: 1749883 (1930-03-01), Ledwinka
patent: 1889208 (1932-11-01), Masterson et al.
patent: 2153523 (1939-04-01), Roberts et al.
patent: 3398798 (1968-08-01), Shelton

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