Patent ID: 9724618
Date: 2017-08-08
CPC Classifications: A63H,B32B,F16B

Claim:
1. A set of attachment members comprising: a first attachment member having a sandwich structure comprising two bendable but incompressible outer layers bonded to and sandwiching a compressible layer, wherein said first attachment member comprises a protrusion having a neck portion connecting to a head portion, said neck portion having a first width and said head portion having a second width greater than said first width, said protrusion having a thickness; and a second attachment member having an aperture, said aperture having a length sufficient to accommodate said second width, said aperture having a breadth measured perpendicular to said length, said breadth having a first value in a central region of said aperture and decreasing along said length in both directions from said central region to a breadth that is less than said thickness of said protrusion so as to allow passage of said head portion through said aperture only when said outer layers are bent towards each other so as to compress said inner layer at lateral edges of said head portion, such that said lateral edges are more compressed than a central area of said head portion during passage through said aperture and expand after said head portion has passed through said aperture so as to resist withdrawal of said projection.