A lockable, removable cassette is described. In an implementation, the cassette includes a plastic shell and a currency access door. The cassette may also include a flexible handle and/or an integrated grip. In addition, the cassette may include at least one of an aperture and a transparent window positioned...http://www.google.com/patents/US7789214?utm_source=gb-gplus-sharePatent US7789214 - Stacker mechanisms and cassettes for banknotes and the like
