A cargo container (1) and a coupling assembly (13) for releasably coupling two or more of those containers (1) together in a side-by-side relationship. The assembly (13) has a male and female coupling part (14,15). The male coupling part (14) has a mounting structure (16) for mounting that part (14)...http://www.google.com/patents/US4819820?utm_source=gb-gplus-sharePatent US4819820 - Cargo containers
