A fluid flow chamber cassette that can be mounted with either its front wall or rear wall against a supporting machine and has a flexible tube that extends from a sidewall and forms a loop that is symmetrical about a loop axis that is transverse to the side wall so that the loop will be acted upon by...http://www.google.fr/patents/US4666598?utm_source=gb-gplus-shareBrevet US4666598 - Apparatus for use with fluid flow transfer device
