Pump hose for a peristaltic pump
First Claim
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1. A hose for a peristaltic pump, the hose having a longitudinal portion for being mechanically squeezed by at least one member of the peristaltic pump at progressive locations along the length of the hose, the hose comprising:
- a first arcuate portion having a thickness and defining an inner wall,a second arcuate portion having a thickness and defining an inner wall, the first arcuate portion and the second arcuate portion being substantially symmetrically disposed and being joined at at least one joining to define a lumen, the inner wall of the first arcuate portion and the inner wall of the second arcuate portion defining an opening angle at the joining of less than 180°
, andat least one rib protruding outwardly from the joining, the rib having a thickness which is approximately equal to the sum of the thickness of the first arcuate portion and the thickness of the second arcuate portion.
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Accused Products
Abstract
A pump hose for a peristaltic pump consists of two arcuate portions that merge along kink lines so that the undeformed hose lumen has the cross-sectional shape of a convex lens. The joinings of the arcuate portions are joined by outwardly extending ribs. When the hose is pressed, only minor squeezing occurs at the joinings. The hose has a considerably improved squeezing and restoring behavior. The ribs prevent an excessive squeezing.
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Citations
7 Claims
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1. A hose for a peristaltic pump, the hose having a longitudinal portion for being mechanically squeezed by at least one member of the peristaltic pump at progressive locations along the length of the hose, the hose comprising:
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a first arcuate portion having a thickness and defining an inner wall, a second arcuate portion having a thickness and defining an inner wall, the first arcuate portion and the second arcuate portion being substantially symmetrically disposed and being joined at at least one joining to define a lumen, the inner wall of the first arcuate portion and the inner wall of the second arcuate portion defining an opening angle at the joining of less than 180°
, andat least one rib protruding outwardly from the joining, the rib having a thickness which is approximately equal to the sum of the thickness of the first arcuate portion and the thickness of the second arcuate portion. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification