A locking cap for a container has a combination lock built into the top. Two or more thumbwheels with numbers or letters are mounted beneath the top surface of the cap or gung plugs. The thumb wheels have through holes corresponding to the numbers or letters. One or more pins are slidably mounted in...http://www.google.es/patents/US20060207958?utm_source=gb-gplus-sharePatente US20060207958 - Secure bottle cap
Número de solicitud: 11/083,294 Número de publicación: US 2006/0207958 A1 Fecha de presentación: 17 Mar 2005 Patente emitida: US7600648 ( Fecha de emisión 13 Oct 2009)