Velcro 2.0
22/May/2007 Filed in:
Tools
66-year-old architect Leonard Duffy has reinvented
Velcro and made it better.
From Popular Science:
In a wooden shed in the Vermont foothills,
66-year-old architect Leonard Duffy has reinvented
Velcro. No one has offered a viable alternative to
the ubiquitous hook-and-loop closure in 50 years. But
Duffy's "slidingly engaging fasteners" link up easily
and silently, don't wear down over time, and support
eight times the weight that the stuff on your jacket
can with plastic straps that bind together through
matching, interlocking grids of little hexagonal or
triangular islands. Duffy has used them to replace
the laces on sneakers and the straps on ski gloves
and wristwatches and to seal a breathable, waterproof
cast he calls the Unitary Wrap.
"I started out trying to reinvent the zipper," Duffy
says. A decade ago, while he was hurriedly trying to
close his carry-on at the airport, the zipper broke.
"I got mad, and I said, 'There's got to be a better
way to do this.' "
His sketchbooks are filled with his ambitions—a
redesigned torque wrench, critical improvements to
the drywall screw holder, new buildings. He skips
work every Thursday to ski, yet when he's at his
desk, he gets so immersed that his wife has to remind
him to eat. In 2003 he created an under-the-cabinet
cookbook holder that now sells on QVC, but he's
probably forgotten more inventions than he's
finished. While recounting the airport story, an
architecture client calls to check on a project.
Duffy assures her that he's on the job. When he hangs
up, he confesses, "That's one I forgot all about."
After the zipper incident, he spent the next few
years penciling out designs and building models,
experimenting with foam, cardboard and wood. After a
failed presentation to a major manufacturer he won't
name, he realized that his homemade prototypes were
too simple, so he plunked down several thousand
dollars to switch to injection-molded plastic.
Eventually he arrived at the design that exists today
and began fastening everything he could with it.
Then his sister-in-law broke her arm. She wore a
removable cast held in place by Velcro straps and
complained constantly. The Velcro pulled at her
clothes and hair and smelled bad as it absorbed
moisture and perspiration. Inspired, Duffy created a
wraparound cast made from a single plastic sheet
sealed with his fasteners. He entered his Unitary
Wrap into a NASA-sponsored invention contest called
"Create the Future"—he says he did it for the free
riveter promised every entrant—and won. Joe
Pramberger, who oversaw the contest, says the Unitary
Wrap prevailed because it was so practical. "It's a
nice solution to a simple but perplexing problem."
Now a prosthetics company envisions using the plastic
straps to attach artificial limbs, and nearly 150
product designers have contacted Duffy after a
clearinghouse called Material ConneXion added the
item to its library last year.
With all the recent inquiries, this might seem like a
good time to come up with a catchier moniker for his
innovation, but not to Duffy. "It's slidingly
engaging," he says, insisting that the name is just
fine. "It's the slidingly engaging fastener."