Because the iPUMP looks like the alphabet I.
I started working on the iPUMP 16 years ago and one of my criteria was that it must fit inside the bicycle frame where the saddle fits in. accordingly, the pump had to be cylindrical. And i tell you, it may seem simple, but it is not.
Less than 20mm in diameter and completely cylindrical with a hose, was not easy to invent.
Especially the 4mm polyurethane tube. the joint between the tube and the presta air valve connector was the biggest problem to solve.
The design of the neck shaped piece was actually an engineering solution to a very serious problem.
"How to make sure that you never pinch your finger while pumping?"
With this neck shaped design you never have to worry about pinching or cutting your finger.
Also, it is very ergonomic. It allows you to hold the pump comfortably with one hand while pumping with the other hand.
Yes, its possible to use with both Dunlop and Schrader valves.
I made the iPUMP specifically for Dunlop type air valves but with the adopter, which is included with each iPUMP, you can easily inflate the Schrader valve as well.
The iPUMP will pump up any ball!! Basket ball, Football, Volleyball, and anything else that has air in it.
I even reinvented the ball inflating needle, so that if the needle breaks while pumping up a ball, it's very easy to pull the broken needle out of the ball.
The cone shaped handle is purely for ergonomic reasons. The handle fits comfortably between the index finger and the thumb when pulling the handle towards the body of the iPUMP during pumping. Having the handle cone shaped provides for maximum GRIPPING power between the index finger and the thumb while pumping. The two round rings are actually two rubber Orings for cushioning the pressures on the fingers, especially when the pressure in the tire is high. Also, with this configuration the total weight of the handle has been substantially reduced while providing most comfort while pumping.
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