To create a retractable pen with a minimal number of component parts, and that provides the user with tactile feedback.
Solution
My solution is a mechanism consisting of only 3 parts—the outer body, the cartridge, and the rotating wheel. The wheel is rotated to deploy and retract the cartridge. As it rotates over the centre, pressure locks the cartridge in place.
Manufacturing Processes
Injection moulding, heat forming.
Materials
ABS, cartridge components – PP, ink, nib
Patents
GB 2176749 A
Company
Company: Gillette/Papermate
BIG WHEEL PEN
"Take three parts"
Challenge
To create a retractable pen with a minimal number of component parts, and that provides the user with tactile feedback.
Solution
My solution is a mechanism consisting of only 3 parts—the outer body, the cartridge, and the rotating wheel. The wheel is rotated to deploy and retract the cartridge. As it rotates over the centre, pressure locks the cartridge in place.
