A dispenser cap for discharging measured amounts of contents from a container includes a first peripheral skirt having upper and lower portions, the lower portion serving to secure the cap to a container. The upper skirt portion at least partially defines a dispensing chamber primarily in the upper portion...http://www.google.fr/patents/US5489049?utm_source=gb-gplus-shareBrevet US5489049 - Dispensing cap with rotatable top
