Patent ID: 7818939

Claim:
A glueless interlocking snap-lock joint for a pair of suitable members which are to be joined at their edge surfaces comprising: a female member having a frusto-cardioidally shaped recess being formed in said member at said edge surface, said recess being shaped to increase in width to a maximum at a predetermined depth of said recess, said recess having a curved surface remote from said edge surface; a male member to be joined to said female member by the insertion of an frusto-cardioidally shaped projection carried by said male member into said recess, said projection having a shape corresponding to the shape of said recess in said female member; said recess having an opening for said recess which may be elastically stretched to accommodate the insertion of said projection and, wherein said recess has sufficient elasticity to grasp and captivate said projection once it is completely inserted into said recess to hold said pair of suitable construction members in a predetermined angular relationship.