A diver's buoyancy control device (BCD) comprises a jacket configured to be worn by a diver. The jacket includes a back portion for overlying a diver's back and a pair of side portions connected to the back portion for overlying the diver's chest. A scuba tank can be releasably connected to the back...http://www.google.es/patents/US6120213?utm_source=gb-gplus-sharePatente US6120213 - Modular diver's buoyancy control device
