COMPLIANCE CHAMBER WITH LINEAR MOTOR FOR MARINE ACOUSTIC VIBRATORS
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United States of America Patent
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Issued Date -
Jul 14, 2016
app pub date -
Nov 12, 2015
filing date -
Nov 12, 2015
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Abstract
Provided are marine acoustic vibrators and methods of using marine acoustic vibrators. An example marine acoustic vibrator comprises a sound radiating surface operable to produce a resonance frequency, wherein the sound radiating surface at least partially defines a marine acoustic vibrator internal volume, wherein the marine acoustic vibrator internal volume comprises a marine acoustic vibrator internal gas having a marine acoustic vibrator internal gas pressure; a compliance chamber, wherein the compliance chamber comprises a compliance chamber internal volume, and a spring function system; a linear motor operable to adjust the compliance chamber internal volume; wherein pressure variations in the marine acoustic vibrator internal volume generated by actuation of the sound radiating surface induce the spring function system and the linear motor to adjust the compliance chamber internal volume such that the pressure variations in the marine acoustic vibrator internal volume are reduced.
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