Acoustics – Sound-modifying means – Mechanical vibration attenuator
Reexamination Certificate
2007-11-20
2007-11-20
Martin, Edgardo San (Department: 2837)
Acoustics
Sound-modifying means
Mechanical vibration attenuator
C181S209000
Reexamination Certificate
active
10956589
ABSTRACT:
Disclosed is a method and apparatus for reducing vibrations in an electrical device, wherein the apparatus comprises a plurality of stacked metal plates, wherein the stacked metal plates move frictionally opposed to one another upon excitation of the device, and wherein movement of the stacked metal plates produces damping of the vibrations. The apparatus further comprises a clamp retaining the stacked metal plates, and a plurality of retaining mechanisms, wherein the clamp adjusts a force holding the stacked metal plates together, and wherein the clamp controls an amount of friction produced by the movement of the stacked metal plates. Also, the surfaces of the stacked metal plates comprise a machined surface finish, wherein the machined surface finish controls an amount of friction produced by the movement of the stacked metal plates. Moreover, the stacked metal plates are dimensioned and configured to control a frequency response of the vibrations.
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Martin Edgardo San
Randolph William
United States of America as Represented by the Secretary of the
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