Boots – shoes – and leggings
Patent
1995-05-05
1997-09-16
Trammell, James P.
Boots, shoes, and leggings
364508, H03F 126
Patent
active
056687443
ABSTRACT:
A method for reducing noise generated by the operation of a noise-producing machine includes sensing the noise of the machine with a piezoelectric sensor, sending an activation signal, responsive to the sensed noise of the machine, to activate a piezoelectric actuator to reduce the noise of the machine, where the piezoelectric actuator is independent of a wave guide. Further, a parameter of the machine indicative of the speed of the machine is sensed with a second sensor, and the activation signal is corrected, responsive to the sensed parameter of the machine, to optimize the noise reduction of the piezoelectric material.
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Bao Xiao-Qi
Carney Kenneth B.
Coffey Fred S.
Olinger John L.
Varadan Vasundara V.
Eckert Inger H.
Gegenheimer C. Michael
Owens--Corning Fiberglas Technology, Inc.
Trammell James P.
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