METHOD AND APPARATUS FOR THE CALIBRATION OF TUBING TO PROVIDE FOR A DESIRED FLOW RATE THERETHROUGH

• US 3,582,234 A
• Filed: 07/14/1969
• Issued: 06/01/1971
• Est. Priority Date: 07/14/1969
• Status: Expired due to Term

• Current Assignee: Aaron Kassel, Isreeli Jack
• Original Assignee: Aaron Kassel, Isreeli Jack
• Inventors: ISREELI JACK, Kassel, Aaron
• Application Number:
  US04/841,351
• Time in Patent Office: 687 Days
• US Class Current: 417/53
• CPC Class Codes: F04B 43/1223 the actuating elements, e.g. rollers, moving in a straight line during squeezing
• CPC Class Codes: G01N 35/08 using a stream of discrete samples flowing along a tube system, e.g. flow injection analysis

Abstract

New and improved method and apparatus for the calibration of a tube to accurately provide for a predetermined flow rate therethrough are provided and include the monitoring of the flow rate through the tube and, if the latter exceeds said predetermined flow rate, the reduction of the internal diameter of said tube while continuing to monitor the flow rate therethrough until the latter coincides with the desired flow rate.

Claims

1. In a method of providing for a desired flow rate through a tube of elastic material, the steps of, flowing fluid through said tube and, if the flow rate of said fluid is greater than said desired flow rate, reducing the internal diameter of said tube by the stretching of said tube longitudinally thereof while monitoring the flow rate therethrough until the latter coincides with said desired flow rate.

2. In a method as in claim 1 wherein, the step of flowing fluid through said tube is accomplished by the pumping of fluid therethrough.

3. In a method as in claim 1 further comprising, the step of, maintaining said tube in the stretched condition thereof after said flow rates have coincided.

4. In a method as in claim 2 wherein, the step of pumping fluid through said tube is accomplished by the progressive occlusion of said tube longitudinally thereof in the direction of fluid flow therethrough.

5. In apparatus for providing a desired flow rate through a tube of elastic material comprising, means for flowing fluid through said tube, and means for reducing the internal diameter of said tube, if the flow rate therethrough is greater than said desired flow rate, while monitoring the flow rate therethrough until the latter coincides with said desired flow rate, said reducing means comprising means for stretching said tube longitudinally thereof.

6. In apparatus as in claim 5 wherein, said means to flow fluid through said tube comprise means to pump fluid therethrough.

7. In apparatus as in claim 5 further comprising, means for maintaining said tube in the stretched condition thereof after said flow rates have coincided.

8. In apparatus as in claim 6 further comprising, means for maintaining said tube in the stretched condition thereof after said flow rates have coincided.

9. In apparatus as in claim 6 wherein said means to pump fluid through said tube comprise means to progressively occlude said tube longitudinally thereof in the direction of fluid flow therethrough.

10. In a method of providing for a desired flow rate of a fluid flowing through a tube of elastic material, the steps of, monitoring the flow rate of said fluid flowing through said tube and, if said flow rate exceeds said desired flow rate, reducing the internal diameter of said tube by longitudinally stretching said tube while continuing to monitor the said flow rate until the latter coincides with said desired flow rate.

11. In apparatus for providing a desired flow rate of a fluid flowing through a tube of elastic material, means for monitoring the flow rate of saiD fluid flowing through said tube, and means for reducing the internal diameter of said tube, if the flow rate therethrough is greater than said desired flow rate, while continuing to monitor the flow rate therethrough until the latter coincides with said desired flow rate, said means for reducing the internal diameter including means for longitudinally stretching said tube.