The portable elimination device is a portable container for receiving human waste products, in particular, urine and fecal matter. In a first embodiment for micturition by males, the device is a cylinder having an outside layer made from a pliable, liquid impermeable plastic and an inside layer made...http://www.google.com.hk/patents/US6199220?utm_source=gb-gplus-share專利 US6199220 - Portable elimination device
