These Sketches Prove There is a Line Between Genius and Insanity

It's hard to imagine that most of the items and products in your homes were at one time just an idea that someone scribbled onto a crumpled piece of paper, but if these wacky US patent proposals complied by US Patent Illustrations go to show anything, it's that there's a thin line separating insanity and intelligence.

Mixing patent drawings and conceptions from 2012 all the way back to the 1940s, this compilation of failed and achieved product designs acts like a visual history of the way people thought technology would be heading in the future.

So while things like the Football Helmet Barbecue Grill may seem absolutely crazy, when presented next to something actually realized and developed like the hair net, it's hard to differentiate which items are products of crazy inventors and which ones are brilliant ideas.