Patent ID: 8366420
Filing Date: 2013-02-05
Classification: F04B

Abstract:
1. A peristaltic pump, comprising: a pump frame; a platen operatively associated with said pump frame, the platen having a series of parallel curved surfaces disposed parallel to each other in the direction of flow through the pump, and where each curved surface extends out from the platen and is perpendicular to the flow of the pump; a pressure plate assembly including a plurality of pressure plates, each one of the plurality of pressure plates disposed generally parallel to the curved surfaces of the platen and perpendicular to the direction of flow through the pump, each one of the plurality of pressure plates is configured for translational motion in the direction of the platen, wherein said pressure plates are spaced one from another and each one of the plurality of pressure plates includes an end curved surface extending generally in the direction of the platen and centered on a space between two curved surfaces of the platen; at least one transfer tube sandwiched between the platen and the pressure plate assembly in the direction of flow; a drive assembly operatively associated with said pump frame and said pressure plate assembly, the drive assembly for driving said plurality of pressure plates in a wave sequence so as to sequentially occlude portions of the at least one transfer tube corresponding to the adjacent center between the curved surfaces on the platen and to promote a peristaltic pumping action in said at least one transfer tube; said pressure plates having a first and second side and a second radiused end; and a second platen in operational association with said second radiused end of said pressure plates.