A drive module comprising an elbow formed of composite material and having two generally tubular legs having a large bore. On one leg, elbow supports an azimuth drive module also formed in a generally tubular configuration and have a large bore. On the other leg, elbow supports an elevation drive module...http://www.google.fr/patents/US6177910?utm_source=gb-gplus-shareBrevet US6177910 - Large bore drive module
