Propshaft assembly with vibration attenuation and assembly...

Metal working – Method of mechanical manufacture – Prime mover or fluid pump making

Reexamination Certificate

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Details

C029S889610, C029S407070, C464S127000, C464S180000

Reexamination Certificate

active

06874228

ABSTRACT:
A shaft structure and at least two non-identical inserts. The shaft structure has a cavity and vibrates in response to the receipt of an input of a predetermined frequency such that at least two second bending mode anti-nodes are generated in spaced relation to one another along the longitudinal axis of the shaft structure. Each of the inserts is disposed within the longitudinally extending cavity at a position that approximately corresponds to an associated one of the anti-nodes. A method for attenuating noise transmission from a vehicle driveline is also disclosed.

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