Measuring and testing – Volume or rate of flow – By measuring vibrations or acoustic energy
Reexamination Certificate
2008-05-06
2008-05-06
Lefkowitz, Edward (Department: 2855)
Measuring and testing
Volume or rate of flow
By measuring vibrations or acoustic energy
Reexamination Certificate
active
07367239
ABSTRACT:
A piezocable-based sensor for measuring unsteady pressures inside a pipe comprises at least one cable extending around at least a portion of a circumference of the pipe. The cable includes a first electrical conductor, a piezoelectric material disposed around the first electrical conductor, and a second electrical conductor disposed around the piezoelectric material. The sensor provides a signal indicative of unsteady pressure within the pipe in response to displacement of the pipe. In various embodiments, a band is wrapped around the at least one cable for compressing the at least one cable toward the pipe. In other embodiments, the sensor includes a clamp attached to opposing ends of the at least one cable for holding the at least one cable in tension around the pipe.
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CiDRA Corporation
Lefkowitz Edward
Patel Punam
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