Accession Number : ADD004190

Title :   Fluid Dual Filter.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE AIR FORCE WASHINGTON D C

Personal Author(s) : Dison,James R ; Thomson,George A

Report Date : 26 Jul 1977

Pagination or Media Count : 4

Abstract : A fluid dual filter having a primary fine mesh filter element, a secondary coarser mesh element in parallel with the main or primary element and a plurality of bypass valves which are normally closed to block flow through the secondary filter element but which open at an elevated fluid pressure caused by blockage of the main filter element thereby allowing flow through the secondary filter element. The valves are located down-stream of the secondary filter element in order to prevent their contamination by any foreign matter in the fluid to be passed through the filter. (Author)

Descriptors :   *Patents, *Fluid filters, *Engine fuel systems components, Dual mode, Backup systems, Blocking, Bypass valves, Actuation, Liquids

Subject Categories : Pumps, Filters, Pipes, Tubing, Fittings & Vlvs

Distribution Statement : APPROVED FOR PUBLIC RELEASE