Patent ID: 7252485

Claim:
A tube type pumping apparatus comprising: a wall; a resilient tube, provided along said wall having an internal hollow space to be used as a passage; and a squeezing member arranged in such a manner that said resilient tube is sandwiched between said squeezing member and said wall such that said resilient tube is squeezed as said squeezing member moves along said wall, thereby transporting liquid through said resilient tube; wherein said tube type pumping apparatus further comprises: a squeezing member holder for holding said squeezing member in such a manner that said squeezing member could change its position between a squeezing position near said wall and an initial position away from said wall; a cam member having a surface that receives a driving force from a driving source to change positions of said squeezing member between said squeezing position near said wall and said initial position away from said wall; an engagement mechanism, which causes said squeezing member holder and said cam member to move together after a given idle time elapses from the time said cam member begins to move; and a regulating force generator that provides a regulating force to said squeezing member holder at a time interval as said squeezing member moves.