Pump device for a container

摘要

PCT No. PCT/JP95/00735 Sec. 371 Date Dec. 18, 1995 Sec. 102(e) Date Dec. 18, 1995 PCT Filed Apr. 14, 1995 PCT Pub. No. WO95/28336 PCT Pub. Date Oct. 26, 1995A pump device for a container that is capable of pouring substantially the whole quantity of contents. The pump device includes an operating portion exposed to an outside of the container, a suction portion having a flange attached to the mouth of the container and a lower end inserted into the container for sucking out the contents of a contents filled sealed bag from a suction port, and a gap holding rod having a proximal end internally fitted into the section portion and a distal end extending toward an inner bottom portion of a contents filled sealed bag. The suction portion includes a plurality of cylindrical portions of decreasing diameter starting below the flange. First and second protruded and recessed portions are provided on separate cylindrical portions and third protruded and recessed portions are provided on an outer peripheral surface of the gap holding rod.