Accession Number : AD0164867

Title :   Unbonded Flexure Seal Design.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE AIR FORCE WASHINGTON D C

Personal Author(s) : Eklund,Phillip R.

Report Date : 16 JUL 1974

Pagination or Media Count : 7

Abstract : The patent relates to a cryogenic compressor-displacer piston seal device consisting of an unbonded slip-on type flexure bushing member incorporating an inner lip in an interference fit and forming a small gas chamber with the piston. It contains a pair of outer lips in a line and slidable fit with the piston cylinder wall. Gas pressure directed into the small gas chamber deforms or flexes the flexure bushing seal member in an outward direction to force the outer lips thereof into a gas-tight relation with the cylinder wall. Radial expansion of the piston is automatically absorbed, and therefore compensated for by the inherent ability of the bushing member to simultaneously flex or deform.

Descriptors :   *Cryogenics, *Compressors, *Gas seals, *Patents, Pistons, Bushings, Expansion

Subject Categories : Adhesives, Seals and Binders

Distribution Statement : APPROVED FOR PUBLIC RELEASE