DE2226235A1 - REFILLABLE DRAWING DEVICE - Google Patents

Description

Refillable drawing device Addendum to patent application P 2046657 Die The invention relates to an arrangement for a refillable drawing device of the type of the ballpoint pen, the establishment of the guide according to the main patent and the use of thin-bodied ink is essential to the technical basis of this here further training marked is 0 Analytical preliminary remark: The one to be described Drawing device is particularly intended to be used for quick, neat drawing operations e.g. in connection with oscilloscopes or coordinate tables.

However, what practice proves are the previously known systems Ball base unsuitable for physical reasons of the molecular effect, the between the color mass - usually olein gwebbound, tough in viscosity set dyes -and the capillary (dye container) consists and des from the resulting gravitational moment of inertia, on the other hand from the L'-aterialwahl and the production technique, to be named here! .7etallku ¢, el and ball socket Metal, which is produced by flanging in the lower end of the paint outlet wird0 .'ç'will now such a ballpoint pen in one-way direction for the purpose of Drawing a line used, it shows that the ball is the color mass The capillary and the flanged end are squeezed out by rolling and transferred to paper, basically more paint from the flare than at all e.g. for this dash-is needed; this excess paint remains as a small lump of smear hanging on the tip of the pen, the greater the imprecise the concentricity of the Ball, connected with it is the flaring accuracy that can be achieved at all.

This is where the well-known drying-on or such ballpoint pens even dry out; a quickly frequented sequence of points cannot be transferred at all and is easy to determine on closer observation - Depending on the color roll-out process, the drawing on the ball () must be delayed come.

For the sake of paste use, ballpoint pens are not like about Ink pen - refillable via cartridges As a consequence of this scarce analytical quality Findings in further technical training of the PA 204 6 657 will be the following suggested: For two reasons, the writing system becomes one Writing ball made of synthetic material, e.g. Blaryl used - for systems of inferior quality also glass or steel: a) balls made of synthetic material have greater concentricity - as in-depth studies have shown - can be produced b) compared to steel, for example the adhesion energy of the material for a) with reference to the color liquid to be used much better, which is later in the technical meaning for the writing system further explanation finds.

II.

Because of the fracture hardness - approximate Mohs hardness 9 - are balls of the material to a) in connection with metal frames and the resulting flanging process not applicable.

For this reason, plastic is used instead of the known metal frame - e.g. BODelrin - suggested.

The spherical socket made of this material does not need flanging, whereby balls made of synthetic material (including glass) are smoothly destroyed, and offers Incidentally, in the combination mentioned, the ideal slide bearing for the ball the other excellent property in the type of elasticity components of the Version.

III.

Only the ideal material combination of I. and II. Allows use a thin liquid ink - instead of the previously usual, viscous paste, from what Technically, the "refillability" in the manner of, for example, the well-known ink paftons derives.

IV.

From the explanations I. to IIIo g here supplemented by the absolutely snugly Plain bearing bed made of plastic, arise necessary for the behavior of the writing fluid almost ideal incompressibility conditions (when using a steel ball at least by a factor of 2 worse), i.e. the one via the guide within the Capillary, externally controlled ink inflow volume flows through the closely connected plastic plain bearings through in an almost homogeneous manner (practical like a wafer-thin film) the writing ball - immediate readiness to write, especially important for dots, extremely low required writing pressure -, while the adhesion energy without the rolling process of the ball is unintentional Prevents the ink from flowing out, and on the other hand, hitherto unknown writing speeds achievable and preselectable line widths, e.g. 0.1 or 0.8 mmi the choice of material to I. and II. guarantees a very high life expectancy for the writing system and function.

V.

From the technical explanations I. to It derives consequently the instrumental use of the writing system, as it is also used in other training to III. (Refillability) due to the separate arrangement of the ink tank light (less than 3 grams) and very small (e.g. 10 mm) and so the tight arranged multiple use is also permitted via flexible lines, also according to ohm's law an electronic ink flow control without great effort made possible, with the ink level itself being the resistance bridge in the separate ink container forms and thus controls a solenoid valve controllably.

PATENT CLAIMS: 1.) For a refillable drawing device according to patent (Patent application P 204 6 657) characterized by a guide and by the Use of an ink, according to this document further characterized in that preferably one Writing ball made of synthetic material is used, which is set in plastic.

2. According to claim 1. a writing implement, further characterized in that that it can be refilled using cartridges in the manner of the known ink pens.

3. According to claims 1. and 2. further characterized in that a separate ink container, e.g. connected via a flexible supply line is used, further in that this is associated with an electronic valve control is.

Claims (1)

4. According to claims 1 to 3, this writing instrument is further characterized characterized in that by an externally accessible regulation within the guide leading capillary of the ink flow can be throttled.