Abstract: An improved acoustic baffle for use with underwater hydrophone or acoustic transducer equipment on submarines and the like for attenuating acoustic energy of a noise character emanating from the submarine carrying the hydrophone equipment thereby rendering the hydrophone immune to undesired ambient noise conditions, incorporates a laminated assembly of compliant or spring like elements. One embodiment is characterized by a ribbed member for effecting a spacing of a plurality of rubber tubing type sound absorbing elements. An alternative embodiment incorporates a plurality of metallic springs for controlled compliancy of the baffle. The assembled elements are attached to a steel plate and before being placed in operation, a hydrophone or acoustic transducer is mounted on the opposite side of the steel plate.

Abstract: A fluid sampling device for selectively sampling multiple fluids including a support frame. A plurality of fluid inlet devices extend through the support frame and each of the fluid inlet devices include a longitudinal aperture extending therethrough. An opening device that is responsive to a control signal selectively opens the aperture for passing the fluid therethrough. A closing device that is responsive to another control signal selectively closes the aperture for terminating further fluid flow therethrough.