Patent ID: 7913970

Claim:
A mould comprising a base; a collar having a continuous wall extending between opposite upper and lower edges, and one or more tabs extending from the lower edge, the collar upstanding from the base with the lower edge abutting the base; an insert locatable within the collar in snug fit with the wall; and retaining means operative to retain the tabs in relation to the base so as to retain the lower edge of the collar in proximity with the base, wherein the collar wall incorporates a releasable connection to enable opening of the collar, and a frangible connection is formed between the tabs and the collar wall, wherein the retaining means comprise an overlay element that locates over the tabs and the base, and wherein at least some of the tabs extend outwardly out of a plane of the collar and wherein the mould further comprises a locking member having an inner edge disposed around a periphery of the collar, the locking member forming the overlay element such that the outwardly extended tabs are entrapped between the locking member and the base, and wherein at least some of the tabs extend inwardly out of the plane of the collar and wherein the insert forms the overlay element such that the inwardly directed tabs are entrapped between the insert and the base.