DE2928292A1 - WRITING INSERT FOR INSTRUMENTS OR THE LIKE - Google Patents

Description

2328292

The invention relates to a writing insert for instruments of various types with a storage container for the writing fluid, which is closed before use and only through a special device is opened in the holder of the insert. Instrument writing inserts have recently become considerably smaller along with the instruments, so that they need to be replaced and replaced more frequently. They usually consist of a storage container forming plastic housing, from which a writing tip protrudes, and are made of a fiber material filled in, which is in connection with the porous writing tip.

To allow the ink to flow out of the reservoir through the porous writing tip to the writing surface, it is necessary that the ink in the container is replaced by air flowing in, which is why ventilation devices must be provided, usually this is done through a channel along the writing tip by for example, a round writing tip can be inserted in a square opening in the insert housing. as well other ventilation devices are also known, for example pierceable membranes, which, however, from Be pierced by hand, making sure that a sufficiently large opening remains so during sufficient air can flow into the storage container when the recorder is in use. The most varied of disturbance and Sources of error are foreseeable with such ventilation devices.

Penetrable membranes for instrument writing inserts have also become known in another context, for example from US Pat. No. 3,046,556, in which the

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Membrane is broken by a tubular element, which is connected to a pump, which ink to Writing tip promotes. Other üS-PSs show ventilation devices for other applications, but not one ventilated instrument pen as shown here is. Only US Pat. No. 3,804,540 shows a locked one Cosmetic container shown, which is pierced by a spike that sits in the retaining cap. Included once the plastic container to be pierced is resilient and on the other hand the edge of the the resulting opening rest sealingly on the mandrel, so that no effective ventilation can be established.

The same applies to all of the patents mentioned above. In all cases the ventilation is a fixed part of the housing or a special part, but that remains the case The interior of the housing is constantly in contact with the outside air, right from manufacture. In none In the case of a ventilation is shown, which is initially closed and sealed until it is finally automatic is opened during use.

The object of the invention is therefore to create a closed writing insert for instruments, which is only opened and ventilated when it is used, i.e. when it is inserted into the instrument, whereby in particular, the writing insert and the associated holder must be coordinated with one another.

This is achieved in that with a writing insert for instruments or the like with a writing tip carrying reservoir for the writing fluid, which can be inserted into a holder provided on the writing instrument is, the ventilation opening of the reservoir one

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The closure and the holder cooperate with the closure when the container is inserted into the holder has opener.

Preferably, the closure can consist of a pierceable, breakable or displaceable membrane and the opener for the closure of a member seated in the holder for the storage container of the writing fluid be formed, which exposes the ventilation opening and the connection when the container is inserted into the holder the inside of the tank with the outside air.

Further advantages and special features of the invention will become apparent in the course of the following description of an embodiment the invention explained in detail with reference to the accompanying drawings. It shows:

1 shows a section through a writing insert according to the invention before insertion in the holder;

FIG. 2 shows a partial view of the insert according to FIG. 1, but after it has been inserted into the bracket;

3 shows a partial view of an inserted writing insert of another embodiment;

4 and 5 a further embodiment of the insert according to the invention in section, once before and once after insertion and

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6 is a partial view of a further embodiment of the writing insert according to the invention in section.

1 and 2 is a writing insert for instruments shown, which consists essentially of a flat Plastic housing 1O is made, which is filled with a fibrous material 12 and the writing fluid. In the front end of this container 10 is a stainless steel tube 14 inserted, which the ink from the Reservoir 10 for writing tip 16 at the front end of the tube 14 conducts, for which purpose a wick 18 is expediently inserted.

At the rear end of the container 10 is a closure 20 provided, which has a pierceable membrane 22, including in the holder 24, which receives the insert, a tube 26 is provided. This tube 26 is preferably beveled at the front end, so that the Membrane 22 can be pierced more easily. In other embodiments, however, the tube can also be straight be formed, which is possible in particular with push-on closures that instead of the pierceable Membrane 22 can be provided.

Another embodiment is shown in FIG which the membrane 22 is pierced by a mandrel in the holder 24, the front end 28 of the dome has a larger diameter than the rear end 30, so that by the larger diameter at the front end a relatively large opening 20 is created, which is blocked by the section 30 only to a small extent and between the outer diameter of the section 3O and the inner diameter of the opening 20

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there is enough space left for ventilation.

Another embodiment of the invention is shown in FIGS 4 and 5 shown. Here the closure 21 is provided with a ventilation opening 30, which is through a molded cap 32 is closed, which is separated on one side from the closure 21 when the Cap 32 meets the holder 34 of the insert.

Finally, a further embodiment is shown in FIG. 6. Here is a metal ball 36 in a Ventilation opening 38 fitted, which inwardly into the Storage container is pushed, which is done by a mandrel, not shown, of small diameter in the holder of the mission is effected. Otherwise, this embodiment is similar to that shown in FIGS.

The present invention has only been described with the aid of a few embodiments. You should, however not be limited to this. Furthermore, the appended claims should also be read so that they are not cover only the embodiments described here, but also all those that are the same The idea behind the invention.

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L e r s e i t e

Claims (12)

Writing insert for instruments or the like ". - Patent claims: 1J writing insert for instruments or the like with a die Storage container for the writing fluid carrying the writing tip, which can be inserted into a holder provided on the writing implement, characterized in that the The ventilation opening of the storage container (10) has a closure and the holder (24,34) has a closure at the. Insertion of the container (10) in the holder (24,34) has cooperating opener. 2. writing insert according to claim 1, characterized in that that the closure consists of a push-through membrane (22). 3. Writing insert according to claim 1, characterized in that the closure consists of a breakable membrane (-22) consists. 909886/0671 ORIGINAL INSPECTED 4. writing insert according to claim 1, characterized in that the closure consists of a displaceable membrane consists. 5. writing insert according to claim 1 to 4, characterized in that that the opener for the closure is formed from a tube (26) open to the outside air, which <iie Sealing membrane (22) penetrates. 6. writing insert according to claim 1, characterized in that that the opener is formed from a head (28) which is seated on a thin neck (30) and which holds the closure membrane (22) penetrates so that a free ventilation opening is formed behind the head (28). 7. writing insert according to claim 4, characterized in that that the ventilation opening is covered by an outwardly protruding cap (32) and in the holder (34) Means are provided which move the cap (32). 8. Writing insert for instruments or the like, characterized by a storage container (10) which can be inserted into a device for the writing fluid, which is additionally filled with fibrous material (12) and at one end with a for Writing tip (16) leading, a wick (18) receiving Writing tube (14) is provided, while the other end has a closed ventilation opening, which is opened when the container (10) is inserted into the holder (24, 34) provided in the device. 9. writing insert according to claim 8, characterized in that that the closure of the ventilation opening is formed from a pierceable membrane (22). 909886/0671 10. writing insert according to claim 8, characterized in that that the closure of the ventilation opening is formed from a breakable membrane (22). 11. writing insert according to claim 8, characterized in that that the closure is formed from a displaceable membrane (32). 12. Writing insert according to claim 8, characterized in that that the closure is formed by a displaceable ball (36). 909 8 8 8/0671