Machine element or mechanism – Mechanical movements – Rotary to or from reciprocating or oscillating
Patent
1977-07-15
1978-09-05
Wyche, Benjamin W.
Machine element or mechanism
Mechanical movements
Rotary to or from reciprocating or oscillating
F16H 3300
Patent
active
041110617
ABSTRACT:
A rotatable vibration generating mechanism includes a movable eccentric weight. Said weight is variably positioned to change the eccentricity of the mechanism by the controlled flow of fluid (liquid or air) when the mechanism is stationary or rotating. More than one weight may be used and a combination of movable parts may be used as a compound movable weight. The fluid pressure resisting the movement of the weight is recorded and thus the centrifugal force generated is known through calculation, since the weight, shape, geometric configuration, and positioning of the eccentric weight is known. The centrifugal force can be changed without changing the rotating speed through the use of valve means regulating fluid flow to change the position of the eccentric weight. Pressure sensitive controls may be adapted to the valve means to make the flow control automatic so that the centrifugal force can be held constant or limited through a specified vibrational speed range. A choice of a variety of fluid pressure source means may be used to force the movement of the weight.
REFERENCES:
patent: 3813950 (1974-06-01), Ebersole
patent: 3814532 (1974-06-01), Barrett et al.
patent: 3896677 (1975-07-01), Larson
Ratliff, Jr. Wesley S.
Wyche Benjamin W.
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