Ink pen device
AssigneeKabushiki Kaisha Daini Seikosha
InventorKiyoharu Ozone
Life of this patent
Estimating the term…
Abstract
An ink pen has an ink tank for supplying ink to a pen nib such as a needle or capillary tube nib. The ink tank is connected to a change-over valve by way of an air pipe. The valve opens the ink tank into a positive pressurized air source for pressing ink out in good moderation through the nib during writing or drawing operation of the ink pen. On the other hand, when the ink pen is stopped to operate writing or drawing, the valve opens the ink tank in turn into a negative pressurized air source for preventing ink in the tank from leaking out or dropping down through the nib.
Claims6
An ink pen device comprising:
- an ink pen having a pen nib and an ink tank for supplying ink to the pen nib;
- means for supporting the ink pen for upward and downward axial movement thereof;
- means for shifting the ink pen downward to move the pen nib into a predetermined writing position and upward to move the pen nib out of the writing position;
- and changeover valve means receptive of sources of positive and negative pressurized air and connected to said ink tank and responsive to the shifting of the ink pen by the shifting means for directing positive pressurized air into the ink tank during downward movement of the pen nib into the writing position and for directing negative pressurized air into the ink tank during upward movement of the pen nib out of the writing position to simultaneously effect an ink pen shift with a pressure change.
An ink pen device comprising:
- an ink pen having a pen nib and an ink tank for supplying ink to the pen nib, said ink tank having a cap including at least a portion thereof comprising an elastic wall for manual deformation;
- a hose having one end connected to said ink tank;
- means for coupling the hose to a fluid supply including a first coupling member having a fluid passage therethrough and connected to the other end of said hose, a second coupling member having a fluid passage therethrough and releasably engageable with said first coupling member to connect same thereto and receptive of the fluid supply to communicate same to said hose when engaged with said first coupling member, a normally closed valve disposed in each fluid passage of said coupling members to open and close the fluid passages and means disposed in each of said coupling members for effecting the opening of the valves in the coupling members in response to the engagement and connection of the coupling members to each other.
Dependencies are inferred from the claim text.