Accession Number : ADD004025

Title :   Stress Relieved Molded Cover Assembly and Method of Making the Same.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON D C

Personal Author(s) : Kessler,Hyman

Report Date : 15 Mar 1977

Pagination or Media Count : 9

Abstract : Hoop stresses are relieved to eliminate the formation of cracks produced during the molding of a thermoplastic fitment cover about a support ring structure. Heated plastic is directly molded about the support ring to form any desired cover shape. Hoop stresses created in the cover as the fitment shrinks upon cooling are relieved by means of an interfacing cushion of elastomer. Variation in elastomer configuration provides the flexibility of allowing the elastomer to be snapped-on or to be directly molded onto the support ring. (Author)

Descriptors :   *Patents, *Thermoplastic resins, *Coverings, *Projectile caps, Injection molding, Stress relieving, Domes(Structural forms), Proximity fuzes

Subject Categories : Plastics
      Ammunition and Explosives

Distribution Statement : APPROVED FOR PUBLIC RELEASE