Linear peristaltic pump
First Claim
1. In a linear peristaltic pump having a plurality of cams, a plurality of cam actuated fingers adapted to be moved back and forth by said cams a pressure pad adapted to receive a flexible tube and to urge the flexible tube toward the individual fingers so that when the fingers are sequentially actuated by the cams to contact and close off the flexible tube at a plurality of sequential locations on the tube, fluid is forced along the length of the tube, the improvement comprising:
- the plurality of cam actuated fingers pivotally mounted on a common axis so that when actuated by the cams each of said fingers are pivoted about the common axis to sequentially contact and close off the tube, andthe pressure pad being of rigid construction and being firmly mounted to pivot about an axis having the same orientation as the axis on which the fingers are mounted so that essentially no rocking of the pressure pad occurs along the longitudinal axis of the tube when the fingers contact and close off the tube.
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Accused Products
Abstract
The invention relates to a peristaltic pump wherein a plurality of cam actuated fingers are adapted to pump fluid through a flexible tube by sequentially closing off the fluid filled tube along a length thereof. The fingers are mounted to rotate on a common axis and are spaced from one another in order to reduce the power requirement for operating the pump. A rigid, spring loaded pressure pad, preferably mounted on the same axis as the cam actuated fingers, maintains essentially the same pressure on each of the fingers as they close off the adjacent portion of the tube.
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Citations
11 Claims
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1. In a linear peristaltic pump having a plurality of cams, a plurality of cam actuated fingers adapted to be moved back and forth by said cams a pressure pad adapted to receive a flexible tube and to urge the flexible tube toward the individual fingers so that when the fingers are sequentially actuated by the cams to contact and close off the flexible tube at a plurality of sequential locations on the tube, fluid is forced along the length of the tube, the improvement comprising:
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the plurality of cam actuated fingers pivotally mounted on a common axis so that when actuated by the cams each of said fingers are pivoted about the common axis to sequentially contact and close off the tube, and the pressure pad being of rigid construction and being firmly mounted to pivot about an axis having the same orientation as the axis on which the fingers are mounted so that essentially no rocking of the pressure pad occurs along the longitudinal axis of the tube when the fingers contact and close off the tube. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. In a linear peristaltic pump having a plurality of cams, a plurality of cam actuated fingers adapted to be moved back and forth by said cams and a pressure pad adapted to receive a flexible tube and to urge the flexible tube toward the individual fingers so that when the fingers are sequentially actuated by the cams to contact and close off the flexible tube at a plurality of sequential locations on the tube, fluid is forced along the length of the tube, the improvement comprising:
the pressure pad being of rigid construction, being firmly mounted to pivot about an axis parallel to the tube on the pressure pad so that essentially no rocking of the pressure pad occurs along the longitudinal axis of the tube while the fingers seqentially contact and close off the tube and being spring loaded to close so that the pressure pad can be pivoted away from the cam actuated fingers to facilitate inserting the flexible tube therebetween and so that upon the release of the pressure pad, the pressure pad urges the tube toward the cam actuated fingers. - View Dependent Claims (11)
Specification