Patent ID: 9539798
Date: 2017-01-10
CPC Classifications: B29C,B29K,B29L,B32B,Y10T

Claim:
1. A composite structure comprising: a parent structure having a hole, said parent structure being made of composite material; an insert in said hole, said insert being made of composite material; a first patch bonded by adhesive to one side of said parent structure and one side of said insert, said first patch being made of composite material, wherein said first patch comprises a central portion and a first multiplicity of pre-stressed members that extend outwardly from an outermost portion of said central portion of said first patch, wherein said central portion of said first patch is directly bonded to said one side of said insert by adhesive therebetween, and each of said first multiplicity of pre-stressed members is directly bonded to opposing portions of said one side of said parent structure by adhesive therebetween, each pre-stressed member of said first multiplicity being in a flexed state with a potential to deform toward an unflexed state in the event that a strength of the bond between that pre-stressed member and an opposing portion of said one side of said parent structure becomes zero; and a second patch bonded by adhesive to another side of said parent structure and another side of said insert, said second patch being made of composite material, wherein said second patch comprises a central portion and a second multiplicity of pre-stressed members that extend outwardly from an outermost portion of said central portion of said second patch, wherein said central portion of said second patch is directly bonded to said another side of said insert by adhesive therebetween, and each of said second multiplicity of pre-stressed members is directly bonded to opposing portions of said another side of said parent structure by adhesive therebetween, each pre-stressed member of said second multiplicity being in a flexed state with a potential to deform toward an unflexed state in the event that a strength of the bond between that pre-stressed member and an opposing portion of said another side of said parent structure becomes zero.