Coating implements with material supply – Material flows through porous tool – Wick feed from within reservoir to tool
Patent
1993-11-12
2000-08-01
Walczak, David J.
Coating implements with material supply
Material flows through porous tool
Wick feed from within reservoir to tool
401198, B43K 500
Patent
active
060957077
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The invention relates to a writing utensil, comprising a container having an opening, in which container writing liquid is freely received, one conveying line that is at least partially capillary for the writing liquid, that connects the container to the writing tip for conveying the writing liquid, and a capillary storage communicating with the conveying line.
In writing utensils of this kind a classical closed system is present in which the writing liquid is prevented from leakage by vacuum. For example, fountain pens that have been known for decades are designed according to such a system. Writing utensils of this kind have a special disadvantage that is experienced by almost all users of fountain pens in a more or less misfortunate manner. When the container containing the writing liquid in a free manner, i.e., in a non-capillary manner, has been emptied partially by using the writing utensil, in the writing position of the writing utensil writing liquid may escape from the container due to temperature related air expansion. In order to be able to receive this writing liquid in such a scenario at least partially, i.e., that portion that in general would escape due to air expansion, a capillary storage is provided, for example, in a fountain pen under the pen nib. The capillarity of such a storage must be so great that in the writing position the writing liquid cannot leak from it, but, on the other hand, so small that the storage is not filled during normal writing operation, thus being unable to receive the writing liquid during the aforementioned scenario of air expansion. Such a capillary relation is, as is known in the prior art, to a certain degree realized in classical fountain pens.
However, it has been demonstrated that this solution, due to the relatively narrow limits of air expansion and the relatively small volume of writing liquid in the container for which this known system is operable, cannot be employed for larger containers for writing liquids and for greater limits of air expansion.
It is an object of the present invention to provide a writing utensil of the aforementioned kind that, for great air expansion fluctuations and also for a great container volume in comparison to known systems, functions reliably for receiving writing liquid without allowing the uncontrolled leakage of writing liquid from the writing utensil, independent of the momentary filling degree of the container with writing liquid, whereby the writing utensil should be simple and inexpensive in its production.
SUMMARY OF THE INVENTION
This object is solved with the present invention by providing the conveying line in direct contact with the capillary storage whereby the average capillarity of the capillary storage is less than the average capillarity of the conveying line, at least in the opening of the container.
The inventive writing utensil is primarily characterized by: opening; opening of the container and the writing tip, for conveying the writing liquid from the container to the writing tip, wherein the conveying line completely fills the opening; than an average capillary effect of the conveying line at least in the opening.
Preferably, the conveying line extends into the vicinity of a bottom of the container. Advantageously, the capillary storage also extends into the vicinity of the bottom of the container.
The conveying line and the capillary storage are expediently one unitary part.
Advantageously, the conveying line and the capillary storage are tapered so as to be received in the opening.
In a preferred embodiment, the conveying line has a separate member that is received in the opening.
The conveying line and/or the capillary storage is comprised of a material with a capillary structure which may be a porous and/or fibrous structure.
The essential advantage of the inventive writing utensil is that, as desired, it functions reliably even for greater temperature fluctuations and resulting greater air expansion limits even for a greater volume of writing liquid, of for exa
REFERENCES:
patent: 1166896 (1916-01-01), Garvey
patent: 2740979 (1956-04-01), Bridy
patent: 3113336 (1963-12-01), Langwickel
patent: 3479122 (1969-11-01), Funahashi
patent: 3501225 (1970-03-01), Martin et al.
patent: 3922100 (1975-11-01), Saito
patent: 3993409 (1976-11-01), Hart
patent: 4496258 (1985-01-01), Tanaka et al.
patent: 4588319 (1986-05-01), Niemeyer
patent: 4770558 (1988-09-01), Frietsch
LandOfFree
Writing utensil with a container for receiving freely a writing does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Writing utensil with a container for receiving freely a writing , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Writing utensil with a container for receiving freely a writing will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-657298