Copyright © Françoise Herrmann
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Showing posts with label Cool patents. Show all posts
Showing posts with label Cool patents. Show all posts
Saturday, February 16, 2013
Velcro US2717437 (3)
Copyright © Françoise Herrmann
Tadah!
Tadah!
G. de Mestral
Velvet fabric and method of producing same Filed Oct 15, 1952
Granted Sept. 13 1955
Assignor to Velcro, S.A. A corporation in Fribourg, Switzerland
“My novel fabric distinguishes from the other similar fabrics by the fact that the raised pile is made of artificial material, while at least part of the threads in said pile is provided near its end with material-engaging mean, as required for adhering to a similar fabric or for scouring purposes.”
“Each small bar 5 is provided with a longitudinal groove 7 in which is guided a knife 8 adapted to cut the loop 6 open and to form thus the raise pile threads. However, with a view of obtaining the hook 4, I heat the bar 5 before the cutting of the loops 6, so that the thread extending over the bar may assume and retain the shape imparted to it by the latter.”
Source: US US2717437
Velcro US2717437 (2)
Copyright © Françoise Herrmann
Velcro© is practical. It was inspired by Burdock Burrs. Yes, those pesky little round dry pods that stick to your clothes. See below for a picture of what a Burdock Burr looks like, just in case you are wondering!....
The close-up photograph shows the little hooks that hook onto anything that is soft, like fabric or hair or your pooch’s fur. And it probably looked exactly like that to George de Mestral, the Swiss inventor of Velcro©, who spent a dozen years trying to reproduce, and finally manufacture, fabric that could emulate a similar attachment.
What a story Vel(ours) + Cro(chet) tells! The story of a great invention and of US patent 2717437!
In 1952, plenty of fasteners existed, of many sorts: laces, buckles, buttons, bows, even zippers (since 1917). Who would have ever thought of a hook and loop fastener, much less inspired by Burdock Burrs?! Indeed, this was not was not only a novel type of fastener, it was completely non-obvious!
The manufacturing process was tricky. Mestral went to Lyon, in France, the capital of weaving and textile industries. Cotton loops and hooks did not work. More resistant nylon fibers were needed. And when the patented Velcro was finally produced, it also did not sell well… It was only after the development of successful applications for astronaut suits and scuba diving equipment that Velcro©
Perhaps that one day it will also break into Hollywood: “Vel + Cro”! That would be required viewing for this patent translation course!J
In 1952, plenty of fasteners existed, of many sorts: laces, buckles, buttons, bows, even zippers (since 1917). Who would have ever thought of a hook and loop fastener, much less inspired by Burdock Burrs?! Indeed, this was not was not only a novel type of fastener, it was completely non-obvious!
The manufacturing process was tricky. Mestral went to Lyon, in France, the capital of weaving and textile industries. Cotton loops and hooks did not work. More resistant nylon fibers were needed. And when the patented Velcro was finally produced, it also did not sell well… It was only after the development of successful applications for astronaut suits and scuba diving equipment that Velcro©
Perhaps that one day it will also break into Hollywood: “Vel + Cro”! That would be required viewing for this patent translation course!J
Reference
Wikipedia, the free encyclopedia: Article on Velcro (Feb 15. 2013)
Wikipedia, the free encyclopedia: Article on Velcro (Feb 15. 2013)
US Patent 2717437
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