A toy doll has a doll head having an aperture and a doll body supporting the doll head. A tubular member has a first end extending into the doll head proximate the aperture and a second end extending into the doll body. A plug member is movable within the tubular member either toward the first end or...http://www.google.co.uk/patents/US7063590?utm_source=gb-gplus-sharePatent US7063590 - Doll having adjustable length hair
