Patent ID: 7237975

Claim:
A cartridge type liquid feeding container, comprising: a body; a manipulating body capable of being manipulated from an outside; a cartridge which is loaded into said body so as to be attachable and detachable, and has a cartridge case, a tank portion located inside the cartridge case for housing a liquid, and a piston which slidably moves in the tank portion; a liquid supplying body for supplying the liquid inside the tank portion to the outside; a piston rod which is workable on the piston to press the piston of said cartridge forward, and is movable inside said cartridge case and body; and a conversion mechanism for converting a manipulating force applied to said manipulating body into forward movement of the piston rod, wherein said conversion mechanism comprises a thread engagement between the piston rod and the cartridge case, for screwing the piston rod into the cartridge case, and moving the piston rod forward by relative rotation between the manipulating body and the body, and wherein said thread engagement between the piston rod and the cartridge case is detachable.