A wash cylinder or chamber for an automated cleaning station to clean an object or a person's body part includes nozzles on the interior of the cylinder, the nozzles of one embodiment comprising an increasing roll angle providing a novel spray pattern. Additionally, embodiments of the invention include...http://www.google.com.hk/patents/US7641740?utm_source=gb-gplus-share專利 US7641740 - Wash chamber for automated appendage-washing apparatus
