Liquid dispensing package with drainback spout

A package for containing and dispensing liquids comprising:

• (a) a container for containing liquids having a hollow body defining a liquid chamber therein and an upwardly directed finish having an opening therein;
• (b) a fitment fitted in said opening, said fitment including thereon a frustoconical spout for dispensing liquids therethrough;
• and
• (c) interlock and centering means on said finish and fitment for preventing rotation of said fitment with respect to said finish as well as centering said fitment with respect to said finish on a common central axis, said interlock and centering means comprising a plurality of teeth spaced around said fitment projecting readially inwardly interengaging with cooperating ramp projections on said finish projecting radially outwardly substantially entirely around said fitment and finish,
• wherein said ramp projections have at least one shape, the first shape being a one-sided ramp on said finish and having a leading edge wall making an obtuse angle to a tangent to the side wall of said finish and a trailing edge wall which is radially directed from a tangent to the side wall of said finish, said teeth and one-sided ramps being so dimensioned and positioned such that the teeth will pass over said ramps when said fitment is rotated with respect to said finish in one direction and will be stopped by said trailing edge wall to prevent rotation when rotated in the opposite direction,
• said ramps further comprising a second shape, said ramps of the second shape being two-sided and having leading and trailing edge walls which join together at an apex each making an acute angle to the radial direction through the apex, said teeth and said two-sided ramps being dimensioned and positioned so that said teeth are adapted to contact said leading and trailing edge walls or said apex of said ramps and thereby to center said finish with respect to said fitment.