US PATENT SUBCLASS 340 / 856.4
.~.~ Acoustic or vibratory (e.g., sonic, fluidic, etc.)


Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use



340 /   HD   COMMUNICATIONS: ELECTRICAL

853.1  DF  WELLBORE TELEMETERING OR CONTROL (E.G., SUBSURFACE TOOL GUIDANCE, DATA TRANSFER, ETC.) {14}
856.3  DF  .~ Including particular sensor {1}
856.4.~.~ Acoustic or vibratory (e.g., sonic, fluidic, etc.)


DEFINITION

Classification: 340/856.4

Acoustic or vibratory (e.g., sonic, fluidic, etc.):

(under subclass 856.3) Subject matter in which the sensor includes an element a portion of which either generates or is responsive to mechanical vibration.

SEE OR SEARCH THIS CLASS, SUBCLASS:

855.6, for this subject matter combined with subsurface digital processing circuitry.

SEE OR SEARCH CLASS

181, Acoustics,

101+, for acoustic geophysical or subsurface exploration not restricted to an electrical device.

367, Communications, Electrical: Acoustic Wave Systems and Devices, 81+, for an electrical wellbore telemetering system in which the signal is transmitted in the form of an acoustic wave.