Ever wondered why there is a little hole on the top of a pen cap?



Some of you might think that this little hole allows the passage of air helping in regulating the ink pressure.

Others might claim that this little hole helps us while putting the cap on the pen by not letting the air bubble to be trapped inside creating a repelling force.

Both the above claims are partially correct.

But there is another big reason behind this hole being put on the pen cap.

Have you ever done this?



I am sure everybody has done this at some point of their age.

The main function of the little hole in the pen cap is to prevent deaths by suffocation in case someone swallows the pen cap by mistake.

This little hole helps prevent more than 100s of deaths every year around the globe.

https://www.quora.com/What-are-some-awesome-examples-of-simple-yet-innovative-designs/answer/Mangaljit-Singh-1

http://www.independent.co.uk/life-style/why-do-bic-pens-have-a-hole-in-their-lid-to-stop-choking-a6856061.html

https://www.sciencealert.com/here-s-why-there-are-holes-in-the-tops-of-pen-caps

https://www.wimp.com/the-surprising-reason-why-bic-pens-have-a-hole-on-their-cap/