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Peristaltic pump with tube pinching members capable of biasing the tubing away from the pump rollers

  • US 4,025,241 A
  • Filed: 12/22/1975
  • Issued: 05/24/1977
  • Est. Priority Date: 12/22/1975
  • Status: Expired due to Term
First Claim
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1. In a peristaltic pump comprising a base member, means for biasing said base member toward a pumping position, a plurality of spaced pump rollers mounted for movement along a predetermined path, and pump tubing compressed between said base member and said pump rollers when said base member is in its said pumping position such that movement of said pump rollers along said predetermined path effects peristaltic pumping of any fluid within said pump tubing, movement of said base member to a non-pumping position being effective to release said compression of said pump tubing such that continued movement of said pump rollers along said path is ineffective to produce said peristaltic pumping action, the improvement which comprises at least one actuating member cooperable with said pump tubing and base member and mounted for movement from a retracted position wherein it is substantially out of compressive contact with said pump tubing against the bias of said biasing means toward an actuating position in which said pump tubing is compressed between said actuating and base members such that fluid flow through said tubing is prevented and said base member is held thereby in a non-pumping position.

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