Accession Number : ADD003129

Title :   Plasma Deposited Rider Rings for Hot Displacer.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE AIR FORCE WASHINGTON D C

Personal Author(s) : Kroebig,Helmut L

Report Date : 21 Sep 1976

Pagination or Media Count : 4

Abstract : The patent relates to a hot cylinder for a cryogenic refrigerator having two plasma spray deposited rider rings of a corrosion and abrasion resident material provided in the rider ring grooves, wherein the rider rings are machined to the desired diameter and width after deposition. The rider rings have gas flow flats machined on their outer surface.

Descriptors :   *Piston rings, *Patents, Refrigeration systems, Cryogenics, Plasma spraying, Wear resistance, Corrosion resistant alloys, Cobalt alloys

Subject Categories : Air Condition, Heating, Lighting & Ventilating

Distribution Statement : APPROVED FOR PUBLIC RELEASE