Tamper proof screw cap - with straight bosses on inner threaded cap and straight and inclined bosses on outer knurled cap

摘要

A screw cap for bottles or cans which cannot be unscrewed by children consists of an inner cap with an internal thread which can be snapped into an outer cap with a knurled outside. The top of the inner cap has six radial projections on the periphery, with square faces. Similar projections on the inside of the top of the outer cap have one square face and one inclined face.