The present invention provides a flexible hose easily converted to a rigid hose. The flexible-rigid bimodal hose comprises a plurality of adjacently engaged hollow members defining a tube having a first end, a second end, and an elongated hollow. A flexible tube as well as a cable pass through the hollow...http://www.google.fr/patents/US7337808?utm_source=gb-gplus-shareBrevet US7337808 - Bimodal flexible-rigid hose
