Tamper-indicating closure

Claim 1

An integrally-formed tamper-indicating thermoplastic closure for fitment to a container having a threaded neck portion and an outwardly extending annular flange adjacent to and beneath the threaded neck portion, said tamper-indicating closure comprising: a. a top wall; b. an annular sidewall downwardly depending from said top wall, said sidewall having about its inside surface a closure thread for cooperation with said container thread to achieve fitment of said closure to said container; c. an annular tamper-indicating band connected to the lower portion of said annular sidewall by way of an annular frangible area, said annular tamper-indicating band having, (i) an annular upper portion depending downwardly from said annular frangible area; (ii) a circumferentially flexible annular lower portion comprising a plurality of spaced apart tabs with each tab connected to its neighboring tab by way of a flexible web and each of said tabs having a projection which will achieve a position of interference with said annular flanges when said annular lower portion is folded inwardly and upwardly about the annular hinge of (iii) and when said closure is fitted to said container, and (iii) an annular intermediate portion which provides an annular hinge to hingedly connect said annular upper portion and said annular lower portion one to the other whereby said annular lower portion can be folded inwardly and upwardly to position said projections in a position of interference with said container annular flange when said closure is fitted to said container.