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Idea is highly appreciable, but I think more ink was possible by increasing the diameter of the tube. After all to accommodate a spiral more diameter is required. More over to use all the ink ball of the point has to work more therefore it should be of better properties to reduce wear resulting in to more smudging. Once again Kudos to this concept.

gooooooooooood~

Interesting, but why not just make the cartridge with a wider diameter? Lower manufacturing costs, less materials used, same result. The cartridge is hidden, so the aesthetics of the spiral aren't a value add. If there's a viscosity or adhesion question related to the property of the inks that makes the cartridge diameter a critical component, it would still probably be better to tackle that aspect of the problem rather than create a spiral insert.

Cheers,
Mike

..and half of the ink will be stuck inside and won't come out of the spiral with all it's curves

Can you extrude a sprial?

Just thinking about the lifespan of an average BIC Ballpoint pen. For me, it's about 1 month tops before I lose it. Nice idea still.

Idea is highly appreciable, but I think more ink was possible by increasing the diameter of the tube. After all to accommodate a spiral more diameter is required. More over to use all the ink ball of the point has to work more therefore it should be of better properties to reduce wear resulting in to more smudging. Once again Kudos to this concept.

I am sorry, I overlooked similar comments, my comments is a repetition, I apologize it.

You spoke of the double helix of our DNA, well why don't the makers of this pen ad another cartridge pointing in the opposite direction? It also could be another color and it would double the ink again whilst adding no more volume.

most pen cases are wide enough. It seems you are just utilizing the empty space. No matter how you break the math. at the end of the day (regardless of little differences here and there), This idea save more material, last longer, and is simple enough to be manufactured within 6 months to a year.

Capillary action?

I agree with you mike.. totally agree. Quite obvious. Only one benefit. If the pen breaks in your pocket or anywhere for that matter, it is sure to make a “splash”. This might not happen with a spiral.

cheers mike.

greaaaaaaat!!!!!!!!!!!!!!

It took 4 designers to design this!?!?!?!?

I always relish that I was born into the age of the pen. Now to look upon this spiral writing instrument is delightful and with added bonus that ecological benefit is conceived and integral to design. Makes me want to write something good… Bravo!

Spiral writing instrument is delightful and with added bonus that ecological benefit is conceived and integral to design. Makes me want to write something good… Bravo!

cool idea… but not really “a step towards being more eco-friendly” there are already pens that exist that are much more eco-friendly than this. ex: just replacing the ink rather than the entire pen itself. ex: fountain pens.

I always relish that I was born into the age of the pen. Now to look upon this spiral writing instrument is delightful and with added bonus that ecological benefit is conceived and integral to design. Makes me want to write something good… Bravo!

Spiral writing instrument is delightful and with added bonus that ecological benefit is conceived and integral to design. Makes me want to write something good… Bravo!

Widening the pen would also be a solution but you'd loose the feel of the BIC sizing shown here.

The last image is a fallacy. The point of having a replaceable cartridge is that you don't use *two* pens for two cartridges.

cool idea… but not really “a step towards being more eco-friendly” there are already pens that exist that are much more eco-friendly than this. ex: just replacing the ink rather than the entire pen itself. ex: fountain pens.

Interesting idea if it was with a see-through pen but the problem is that it would also greatly increase the cost of the refill. Straight refills are simply extruded and chopped while this would require an additional step in the manufacturing process that would require either the tube to be shaped into the form you show or shaped 3D directly during the extrustion process (it's conceivable but again, increases cost).

useless

why most designers never think of ideas that are practical as well as wow…i know its difficult but thats wat the real challenge is …

I get the feeling that with this design, you'd could make the click mechanism on a pen much more efficient as well.

super idea!!!!!

Another solution to a problem that simply doesn't exist. I've seen thicker refills since my childhood. This is not a good idea, neither original. The difference is that the others scraped the useless idea instead of publishing.

Erm… Is it just me that loses the pen before the ink runs out anyway? Also if it leaks in your pocket you will have a stain double the size ha ha!

oh!!!!! good idea!!! i love it!!!

Erm… Is it just me that loses the pen before the ink runs out anyway? Also if it leaks in your pocket you will have a stain double the size ha ha!

Four designers to come up with this idea? I did a pen somewhat similar for my model development class. It can be seen here: http://about.me/taylorlightfoot

The idea is that the ink tube itself forms the shape of the pen, thus eliminating the need for extra plastics parts and housings. The Pen I designed is just a model, but it would use 9' of ink tube if it were to be manufactured as a functioning pen. 9' of ink sure beats a spiral tube that is only double that of a traditional pen.

I think the diameter seems to be set by the diameter of the pen tip. The cartridge is just wide enough to fit over the tip of the pen. I'm assuming that this is to maximize the flow of ink to the ballpoint itself. I don't know they dynamics or how it would work if the cartridge were much bigger. Arguably a wider cartridge could just be tapered I guess.

Great idea, my pens never last long enough!

Very nice~! Brilliant concept.

I use these Monami pens all the time for writing and drawing tasks. Very very cheap too (only goes for about 25� each).

I suspect ink cartridges aren't wider because if they were, the ink would spill out the open top of the cartridge.

Very interesting concept,
it will look great if the outer shell is Transparent.

Think about how many people it takes to make an advertisement, yet they only put the name of the "art director" in the award publication.

Very interesting concept,
it will look great if the outer shell is Transparent.

How do you hold the pen you designed? with no rigid parts I find it difficult

You just widen the top part of the cartridge while keeping the narrow tip.

why not using a fat tube instead?

I designed this concept in elementary school, and the teacher thought it was a silly idea.

What keeps the ink from drying before you use it all? That happens to me all the time with a regular ball point pen.

why not using a fat tube instead?

I designed this concept in elementary school, and the teacher thought it was a silly idea.

brilliant!!

What keeps the ink from drying before you use it all? That happens to me all the time with a regular ball point pen.

I agree with what Mike Barnard said about just making the ink barrel fatter. However, my first instinct was to say, why not just make the spirals touch each other and get as much as five times the amount?

I agree with what Mike Barnard said about just making the ink barrel fatter. However, my first instinct was to say, why not just make the spirals touch each other and get as much as five times the amount?

iwant to buy it!!!how much;d cheap?

do you use a pen for a month?????????
how can it be? for me, it’s 4 pens for a month!
one for every week, because we have to write lots of things in our schools,
so this invention is really cool!!!!!!!!!!

paul says this is useless,. is he mad?

…or you could make just a thicker tube like other pen manufacturers

as far as i know there is a specific size of the tube that have the appropriate amount of surface tension so that it doesn’t spill over or catching air inside the tube.

as far as i know there is a specific size of the tube that have the appropriate amount of surface tension so that it doesn’t spill over or catch air inside the tube.

Really?! My gosh you’d better tell the Parker Pen Co. right away!