Ink Tube Structure
a technology of ink tubes and ink tubes, which is applied in the direction of ink reservoir pens, writing connectors, brushes, etc., can solve the problems of not being able to buy refills, the pen and its ink tubes have to be thrown out, and the ink tubes cannot be sold in packages containing only one ink tube, etc., to achieve the effect of improving the ink tube structur
Inactive Publication Date: 2008-08-28
LIU GAO SHEN +1
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Benefits of technology
[0007]An object of the present invention is to provide an improved ink tube structure, which has one or two bent portions and allows a user to choose a proper type of housing / pen to go with the improved ink tube structure.
[0008]Another object of the present invention is to provide an improved ink tube structure, which may be adjusted according to the needs of a user so as to facilitate the ease of use.
[0009]A third object of the present invention is to provide an improved ink tube structure, in which a retaining device is used so as to prevent the improved ink tube structure from deforming.
Problems solved by technology
Therefore, those ink tubes can not be sold in packages containing only one ink tube and consumers can not buy such refill.
In addition, after an ink tube runs out of ink, both the pen and its ink tube have to be thrown out.
Therefore, the ink tubes of the prior art are not economical and are not environmentally friendly.
Method used
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Embodiment Construction
[0041]Please see FIG. 1. The improved ink tube structure of the present invention comprises a hollow ink tube 1 and a writing tip 2. The hollow ink tube 1 may hold ink, and the ink may flow out of the writing tip 2 and onto a writing surface.
[0042]A first bent portion 11 is disposed near the writing tip 2. A bent angle C is formed at the first bent portion 11; the bent angle C is between 100 degree and 165 degree. The distance B between the curvature center A and the end point 21 of the writing tip 2 is in the range from 1 cm to 3 cm. The relevant studies have shown that such angle C and such distance B are of the most ergonomic design. In use, the improved ink tube structure of the present invention is placed inside the housing (not shown in the drawing) of a pen so as to be used for writing.
[0043]Now, please see FIG. 2. The hollow ink tube 1 may be consisted of two parts—a shorter front portion and a longer rear portion 12 so as to increase the strength and the ink carrying capaci...
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An improved ink tube structure is disclosed. The improved ink tube structure of the present invention comprises a hollow ink tube and a writing tip. A first bent portion is disposed near the writing tip on the hollow ink tube so that a bent angle is formed at the first bent portion and a distance between the curvature center of the first bent portion and the end point of the writing tip is formed. In this way, an ergonomic design may be provided. A second bent portion may be disposed behind the first bent portion on the hollow ink tube. To keep the first bent portion from deforming, a retaining device is disposed at the first bent portion. A groove is provided on the retaining device so as to hold the first bent portion and keep the first bent portion from deforming.
Description
BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The invention generally relates to an improved ink tube structure. More particularly, the invention relates to an improved ink tube structure that can maintain its curvy structure.[0003]2. Description of the Prior Art[0004]The improved ink tube structure of the present invention is used inside a specially-shaped pen. As of now, pens do not necessarily have a linear design. An angle may be formed near the writing tip so as to achieve a more ergonomic design and this brings about specially-shaped pens.[0005]However, most of ink tubes used inside of these specially-shaped pens still have a linear design (so as not to increase the manufacturing cost) and those tubes acquire their curvy shape after each of them is placed and squeezed into the housing of a specially-shaped pen by a machine.[0006]Therefore, those ink tubes can not be sold in packages containing only one ink tube and consumers can not buy such refill. In additi...
Claims
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IPC IPC(8): A46B5/02
CPCB43K5/005B43K5/04B43K7/005B43K23/12B43K8/003B43K8/03B43K23/004B43K7/02
Inventor LIU, GAO-SHENYONG, CHANG-YUN
Owner LIU GAO SHEN