Continuous resonance marine vibrator
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United States of America Patent
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Oct 20, 2020
Grant Date -
Dec 20, 2018
app pub date -
May 18, 2018
filing date -
Jun 15, 2017
priority date (Note) -
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status (Latency Note)
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Abstract
The disclosure herein generally relates to a device for use in marine seismic surveying. A displacement apparatus has a base and an actuated head. The actuated head is coupled to an actuation means comprising a shaft, a cam, and a motor. The cam is coupled to the shaft at a radial position from the center of the cam. A vacuum piston is optionally coupled to the actuation means. A variable resonance spring, such as an air spring, is coupled to the actuated head in order to tune the apparatus to operate in resonance at a range of frequencies.
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