Patent ID: 7713036

Claim:
A roller-type liquid pumping apparatus with improved installation capability, comprising: a rotor housing having an inner periphery wall, a rotor having at least one roller rotated by a prime mover, a flexible tube inserted into a gap formed between the rotor and the inner periphery wall of the rotor housing and squeezed when the rotor is rotated so as to transfer a liquid fed into the tube, and a guide for guiding the flexible tube in the moving path of the roller, wherein at least one portion of the inner periphery wall of the rotor housing is movable so as to approach and separate from the rotor, wherein the guide is supported by one end of a guide shaft, the guide shaft being supported by an arcuate groove in the rotor so as to move along the arcuate groove and to incline against the force of a return spring with respect to the rotor, and wherein the guide moves along an arcuate path when the tube is inserted.