Patent ID: 6227739
Filing Date: 2001-05-08
Classification: B43K

Abstract:
A liquid container comprising:a body having a tank portion housing liquid, and a liquid supply port at a front side thereof;a piston movable forwardly inside the tank portion;an operation cylinder being attached to a rear part of the body in a relatively rotatable fashion;a piston rod being disposed within an assembly comprising the body and the operation cylinder, the piston rod integrally connected to the piston and extending rearwardly, the piston rod having an external thread formed in a periphery thereof;a piston rod guide being disposed within the assembly and adapted to be rotated integrally with the operation cylinder, the piston rod guide having an internal thread hole which is engaged with the external thread of the piston rod; anda ratchet cylinder being fixed in the rear inside the body, the ratchet cylinder having a bore through which said piston rod is inserted in a relatively unrotatable fashion;wherein the operation cylinder includes serrated gear teeth formed at a front end thereof, and the ratchet cylinder includes a ratchet gear tooth formed at a rear end thereof, the ratchet gear tooth being brought into engagement with said serrated gear teeth and adapted to be selectively protruded or retracted in an axial direction upon the rotation of the operation cylinder relative to the body.