Accession Number : ADD004767

Title :   Double Acting Dynamic Seal with E-Shaped Spring and L-Shaped Seals.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE AIR FORCE WASHINGTON D C

Personal Author(s) : Spencer,Stanley E

Report Date : 21 Feb 1978

Pagination or Media Count : 4

Abstract : A relatively small bidirectional polymeric piston seal especially useful for cryogenic refrigerators having an E-shaped metallic spring retainer and two wound spring seal expanders positioned between two L-shaped polymeric seals. The L-shaped design permits the use of conventional tooling with high strength abrasive polymeric compounds while maintaining tighter tolerances during manufacture thereby keeping frictional resistance at a uniform level to produce longer wear life at the required high pressure forces in two directions. (Author)

Descriptors :   *Patents, *Seals(Stoppers), *Pistons, *Refrigeration systems, *Cryogenics, Polymers, Springs, Tools, Abrasion, Tolerances(Mechanics), High pressure, Wear resistance

Subject Categories : Adhesives, Seals and Binders
      Air Condition, Heating, Lighting & Ventilating

Distribution Statement : APPROVED FOR PUBLIC RELEASE