A filling device for and a method of filling balls in an array of apertures in a ball-receiving element, the filling device comprising: a housing including an opening at a lower surface thereof and defining in part a chamber for containing a supply of balls, the housing being in use movably disposed...http://www.google.se/patents/US7455209?utm_source=gb-gplus-sharePatent US7455209 - Filling device and method for filling balls in the apertures of a ball-receiving element
