A linear peristaltic pump of the type for removable engagement of a portion of a flexible tubing and having a plurality of sequentially actuated pumping elements which act along the engaged portion of the flexible tubing, with the pumping elements reciprocated in a first direction to collapse adjacent...http://www.google.com/patents/US6234773?utm_source=gb-gplus-sharePatent US6234773 - Linear peristaltic pump with reshaping fingers interdigitated with pumping elements