A union lock for maintaining a union between two conduits is disclosed. In a first embodiment, the union lock includes a pair of bridgepieces. Each of the bridgepieces includes an elongated member. A substantially semicircular flange is coupled to each end of the elongated members. A tab is coupled to...http://www.google.de/patents/US6139068?utm_source=gb-gplus-sharePatent US6139068 - Union lock for maintaining connection between two conduits
