After examination of bicycle fit we settled on the seat tube having both best location for the amount of stress created and the most viable general fit solution. I like the mechanism used for stems (what holds your handlebars to bikes) so we modeled the expander bolt mechanism into the seat tube. We looked at ways to distribute the load. A bill of materials and cad rendering were created for this prototype. A provisional patent was then drafted with illustrations. Some questions remained about the experience for the user but the novelty, non obviousness, and useful criteria were clearly being met. Company was formed at this point.
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