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Tubing Creep Eliminator for Peristaltic Pumps

IP.com Disclosure Number: IPCOM000090035D
Original Publication Date: 1969-Jan-01
Included in the Prior Art Database: 2005-Mar-05
Document File: 2 page(s) / 35K

Publishing Venue

IBM

Related People

Tapner, FE: AUTHOR

Abstract

A band of thin material disposed between the rollers and the tubing of a peristaltic pump assembly reduces or eliminates the creepage and the stretch of the tubing in such pumps. A peristaltic pump includes cylindrical pump housing 3, within which is elastic pump tubing 5, arranged around the inner circumference of housing 3. Two or more rollers 7, carried on rotating pump plate 9, are proportioned and arranged so that they engage tubing 5 and compress it between rollers 7 and housing 3 as they rotate. Rollers 7 compress tubing 5 and by a peristaltic or squeezing action, force any fluid contained in tubing 5 through it in the direction indicated by the arrows at the ends of tubing 5. A band of thin material 11 which can be steel, brass or plastic, is disposed between rollers 7 and tubing 5.

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Tubing Creep Eliminator for Peristaltic Pumps

A band of thin material disposed between the rollers and the tubing of a peristaltic pump assembly reduces or eliminates the creepage and the stretch of the tubing in such pumps. A peristaltic pump includes cylindrical pump housing 3, within which is elastic pump tubing 5, arranged around the inner circumference of housing 3. Two or more rollers 7, carried on rotating pump plate 9, are proportioned and arranged so that they engage tubing 5 and compress it between rollers 7 and housing 3 as they rotate. Rollers 7 compress tubing 5 and by a peristaltic or squeezing action, force any fluid contained in tubing 5 through it in the direction indicated by the arrows at the ends of tubing 5. A band of thin material 11 which can be steel, brass or plastic, is disposed between rollers 7 and tubing 5. Band 11 eliminates creepage and stretch of tubing 5 and thus eliminates the necessity of securing tubing 5 within housing 3. By reduction of stretch, the volume output of the pump is maintained more constant.

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