Accession Number : ADD017568

Title :   Multi-Stage Fluid Flow Control Device.

Descriptive Note : Patent, Filed 27 Jun 94, patented 16 May 95,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Shiffler, Mark E ; Morris, Joseph H

Report Date : 16 May 1995

Pagination or Media Count : 9

Abstract : A fluid flow control device includes a support brace fixably mounted in a fluid flow tube. An actuator rod is slidably supported by the support brace. A plurality of conical washers are mounted in sliding engagement on the rod between a stop mechanism on the rod and the support brace. The conical washers are arranged along the rod in an abutting configuration such that adjacent conical washers abut alternately at an apex or base of the conical washers. In operation, the rod is moved so that a compressive force is applied to the conical washers. In this way, the conical washers expand in a radial fashion to reduce the fluid flow area between the device and the tube.

Descriptors :   *FLUID CONTROL, *FLUID FLOW, *PATENTS, SUPPORTS, ACTUATORS, RODS, CONICAL BODIES, WASHERS(SPACERS), COMPRESSIVE PROPERTIES, TUBES

Subject Categories : Hydraulic and Pneumatic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE