초록 ▼

A system for reinforcing a sandwich panel, the panel having a first exterior skin, an intermediate skin and a second exterior skin, the skins being separated by first and second cores and having a hole bored therethrough of diameter A, the holes in the first and second exterior skins being enlarged

A system for reinforcing a sandwich panel, the panel having a first exterior skin, an intermediate skin and a second exterior skin, the skins being separated by first and second cores and having a hole bored therethrough of diameter A, the holes in the first and second exterior skins being enlarged to a diameter B, the system including a first tubular sleeve that is insertable into the hole in the first exterior skin and being of a length substantially equal to the spacing between the first exterior skin and the intermediate skin, a second tubular sleeve that is insertable into the hole in the second exterior skin and being a length substantially equal to the spacing between the second exterior skin and the intermediate skin, the first and second sleeves each having a diameter greater than A and slightly less than B, a bolt insertable through the tubular sleeves, the bolt having a head that contacts the exterior surface of the first exterior skin, first and second flare washers positioned on the bolt, one engaging the first tubular sleeve and the other engaging the second tubular sleeve and a nut threadably receivable on the bolt adaptable to contact the exterior surface of the second exterior skin.

대표청구항 ▼

[ What is claimed is:] [1.] A system for use with a sandwich panel having opposed first and second skins spaced apart a distance F, each skin having an interior and an exterior surface, the skins interior surfaces facing each other, the system comprising:a tubular sleeve of length substantially equa

[ What is claimed is:] [1.] A system for use with a sandwich panel having opposed first and second skins spaced apart a distance F, each skin having an interior and an exterior surface, the skins interior surfaces facing each other, the system comprising:a tubular sleeve of length substantially equal to F having a uniform interior diameter of A, the sleeve having circumferential integral integrity throughout its length;a threaded bolt having a diameter slightly less than A, a frusto-conical element being positioned on and adjacent an end of the bolt; anda nut threadably receivable on said bolt usable to force said frusto-conical element into said sleeve to flare one end thereof, providing a flared end and whereby all portions of the sleeve except the flared end remain of said uniform interior diameter.