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US 6,629,798 B1Granted
Pen
OwnerMasaaki Fukami, Toshio Manabeinventors
Life of this patent
Estimating the term…
Abstract
There is provided a pen in which ink is supplied steadily from an ink tank to a pen point. Ink in an ink tank 6 is supplied to a pen point 5 through a slender tube portion 4A of an ink introducing slender tube 4. Excess ink can be kept by a stuffing member 7 that is in contact with a portion in which the ink introducing slender tube 4 and the pen point 5 are connected to each other and a gap 8 provided in the connecting portion.
Claims20
A pen comprising:
- an ink tank for supplying ink;
- an ink introducing slender tube having:
- an open slender tube portion to induce capillary flow of ink formed inside said slender tube;
- and
- a rear end portion which is connected to said ink tank for introducing ink in said ink tank through said slender tube portion;
- a pen point having:
- a tip end face;
- a back end portion;
- and
- pores for drawing ink out of said ink introducing slender tube to said tip end face thereof by connecting said back end portion thereof to tip end portion of said ink introducing slender tube;
- and
- a stuffing member, which is positioned in contact with said back end portion of said pen point, said stuffing member holding excess ink when excess ink flows out of said ink introducing slender tube and for supplying ink held in said stuffing member to said pen point when ink flowing to said pen point runs short.
9 more elements
A pen comprising:
- an ink tank for supplying ink;
- an ink introducing slender tube having:
- a slender tube portion formed inside said slender tube;
- a rear end portion of which is connected to said ink tank for introducing ink from said ink tank through said slender tube portion
- a pen point having:
- a tip end face;
- a back end portion;
- and
- pores for drawing out ink flowing out of said ink introducing slender tube to said tip end face by connecting said back end portion thereof to said tip end portion of said ink introducing slender tube;
- a fluid transfer gap, which is formed adjacent said ink introducing slender tube and said pen point where they are connected to each other, for opening a part of said slender tube portion of said ink introducing slender tube;
- and
- a stuffing member, which is provided in contact with said ink introducing slender tube and said pen point back end portion and said fluid transfer gap, for storing any excess ink flowing out of said gap or said back end portion of said pen point when excess ink is supplied from said ink introducing slender tube, and for supplying the ink stored therein to said pen point when the ink flowing to said pen point is insufficient.
9 more elements
A pen comprising:
- a tank for supplying fluid;
- a capillary tube having:
- a rear end portion of which is connected to said tank for introducing fluid from said tank into said capillary tube;
- and
- a front portion;
- a pen point having:
- a tip end portion used to deliver fluid;
- and
- a back end portion positioned in fluid transfer relationship to said front portion of said capillary tube, said pen point delivering fluid from said back end portion to said tip end portion;
- a fluid transfer interface formed adjacent said back end of said pen point and said front portion of said capillary tube;
- and
- a stuffing member, which is provided at said fluid transfer interface, for storing any excess fluid flowing out of said interface, and for supplying fluid stored therein to said pen point when the fluid flowing to said pen point is otherwise insufficient.
9 more elements
Dependencies are inferred from the claim text.