Patent ID: 6406205
Filing Date: 2002-06-18
Classification: B43K

Abstract:
A pen having a constant ink supplying device, comprising a barrel, a plug, a valve, a nib holder, and a nib, whereinthe barrel is arranged to be filled with ink and contains a ball, said plug, valve, nib holder, and nib being sequentially installed in a front end of an inner wall of the barrel, the plug is an annular body having a channel, said ball being arranged on one side of said plug to control flow of ink from said barrel to said channel, and an opposite side of the plug forming a cavity for storing ink that has passed through said channel from said barrel, the valve is made of a flexible material and is firmly secured to a lower end of said plug, said valve including a central opening, the nib holder is movably installed below the valve, an upper end of the nib holder including a support and an ink inlet, said support being arranged to engage said valve and prevent ink from flowing through said central opening to said ink inlet, and the nib is an ink absorber installed within the nib holder in communication with the ink inlet of the nib holder, and wherein when said barrel is shaken, said ball moves away from the channel allowing ink to flow from said barrel through said channel to said cavity, said ink being prevented from flowing to said nib by said valve, wherein when said pen is in an upright position, said ball closes said channel and hydraulic pressure is applied to said nib holder, and wherein during writing, pressure on said nib moves said support and causes said valve to open, thereby permitting said ink to flow from said cavity through said central opening and said ink inlet to said nib.