Accession Number : ADD017836

Title :   Multi-Stage Fluid Flow Control Device.

Descriptive Note : Patent, Filed 30 Jun 94, patented 17 Oct 95,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Shiffler, Mark E

Report Date : 17 Oct 1995

Pagination or Media Count : 8

Abstract : A fluid flow control device is defined by a plurality of flow control stages mounted on a rod. Each of the flow control stages includes a support brace providing sliding support of the rod, an end plate fixably mounted on the rod, and an elastomeric element mounted on the rod between the support brace and the end plate. The elastomeric element defines an annular cavity around an inside perimeter of the tube. The elastomeric element expands between the end plate and support brace in accordance with axial movement of the rod in order to adjust the size of the annular cavity. (AN)

Descriptors :   *FLUID CONTROL, *PATENTS, *ANNULAR FLOW, ELASTOMERS, RODS, NOISE REDUCTION, FLOW NOISE, FLOW SEPARATION, AXIAL FLOW, CAVITATION

Subject Categories : Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE