Patent ID: 6109466
Filing Date: 2000-08-29
Classification: B65D

Abstract:
A leak free, interference bead closure assembly, comprising:a container having a neck portion extending therefrom, said neck portion forming an opening and having a first screw thread on an outer surface;a cap having a second screw thread on an inner surface and a seal for releasably engaging said opening of said neck portion to form a leak free seal, wherein said second screw thread engages said first screw thread; anda first interference bead disposed on a first side wall of at least one of said first and second threads and a second interference bead disposed on a second side wall opposite said first side wall on the same thread as said first interference bead, said first and second interference beads being spaced apart, wherein said second side wall forms part of said at least one of said first thread and said second thread having said first interference bead, wherein said first and second interference beads each create an interference fit between said first thread and said second thread when said container and said cap are threadedly engaged, thereby maintaining a leak free seal and eliminating side to side wobbling of the closure assembly.