Anyone who’s seen James Cameron’s Aliens cannot forget the images of 1.) Ripley in a cargo-loader exoskeleton, and 2.) Vasquez prowling the corridors with that body-mounted machine gun on the swing arm. That was back in 1986; now it’s 2013, and not only have these designs actually come to pass, but they’ve been combined. As we previously reported , Lockheed Martin licensed a company called Ekso Bionics’ technology to develop the HULC , or Human Universal Load Carrier. It’s got the power-assist legs and the body-supported gun mount: While Ekso Bionics is targeting the consumer market, enabling paraplegics to walk again, Lockheed has initially gone military. However, they’re reportedly creating a version of the HULC called the Mantis, for industrial applications. As Bloomberg News reports , The machines may follow a classic arc from Pentagon research project to fixture on an assembly line, similar to the development of lasers, said Paul Saffo, managing director of foresight at investment advisory firm Discern in San Francisco. “The medical devices get the most attention, the military funds it and the first mass application is industrial,” Saffo said in a telephone interview. [Mantis is aimed at] any industry in which workers must hold heavy equipment that can cause fatigue and back injuries…. Mantis has a mechanical extension for a wearer’s arm and absorbs the strain from hefting a grinder or sander, [Lockheed business development manager Keith] Maxwell said. Tests found productivity gains of more than 30 percent, he said, and wearers showed their Macarena footwork to demonstrate the suits’ flexibility. “It turns workers away from being a weightlifter and into a craftsman,” Maxwell said. I’m all for Construction Worker Exoskeletons—as long as the power tools are not integrated, but remain separate objects that you pick up. Because once they start replacing the user’s hands with built-in angle grinders and magazine-fed nail guns, we’re going to have a problem. Last year, I watched a construction worker fight a cabdriver in front of my building; the hack didn’t stand a chance. The last thing I want to see is an angry frame carpenter tramping off the jobsite in one of these things, ready to settle someone’s hash with his Forstner-bit fingers and chopsaw hands. (more…) 
 Remember the Thonet bicycle concept , and how we weren’t sure if the seat-tube-less design would be possible to execute in steambent wood? Seeing as there’s still no word on whether it will become a reality, Japanese design student Yojiro Oshima has done them one better with a prototype of his unconventional bicycle concept. For his degree project at Musahino Art University’s Craft & Industrial Design Department, he has designed and built a Y-Foil/Softride-style frame by hand (it wasn’t based on a chair per se, but I’m seeing a little Wegner myself). The designer recently sent the project to James Thomas of BicycleDesign.net , where Oshima notes : “This proposal is about the shape of the frame and the handle mainly which doesn’t concern what material it’s made out of. The maximum comfort can be put into practice by wood.” Thus, the frame concept also echoes that of the previously-seen (steel) Van Hulsteijn , which is currently in production. A visible seam Regarding the construction and other carpentry/bike nerd concerns, Oshima adds, It is all hand made. The down tube and seat tube are hollowed with plenty of thickness left not to disturb the surface when planed too much. As a result, it weights about 14kg in total. The thickness is uncertain though, I guess it’s about 6-12mm. It is bonded the half and half into one. I was also curious to learn that the trispoke-style wheels were originally known as “baton” wheels—the renderings of the Thonet concept has a set of HED’s top-of-the-line carbon fiber version—and that the clover-like construction is intended to “soften the ride.” Similarly, the cantilevered saddle intended for comfort, while the short stays speak to performance by “assuring the stiffness.” Check out the full-size images at BicycleDesign.net (more…) 
 Why won’t the internal combustion engine die? To oversimplify the issue, it’s partly because of its incumbency and partly because it’s very good at what it does. Environmentalists hate it because it’s dirty, and while some engineers pursue alternate energy forms, there are still plenty of smart people tweaking the internal combustion engine to make it less dirty, more efficient, and more powerful. One person in the latter category is Christian von Koenigsegg , the rather brilliant inventor behind the Swedish supercar skunkworks that bears his name. Anyone with a basic understanding of how engines work is bound to be impressed by von Koenigsegg’s latest breakthrough: He’s developed an engine with no cams. With a conventional engine, the valves are driven by cams that are necessarily egg-shaped, with each cam driving its attendant valve stem into its deepest extension at the pointiest part of the egg as the cam rotates on the camshaft. Simple physics dictate this be a gradual process; because of the egg shape the valve gradually opens, maxes out, and gradually closes. If a cam was shaped like an off-center square, for instance, the valve stem would break on the corners. With von Koenigsegg’s radical “Free Valve” engine design, the valves operate independently and electronically to depress/open, while a mechanical spring returns them to the closed position. This means the valves quickly slam open, allowing fuel to flood the combustion chamber, then quickly slam shut. Ditto for the exhaust valves. So fuel is not gradually seeping in and exhaust is not gradually seeping out—it’s going BAM in, BAM out. The benefits? The engine is much smaller, of course, requiring no camshaft or timing belt. On top of that they’re projecting 30% less fuel consumption, 30% more torque, 30% more horsepower, and a staggering 50% less emissions. In the video below, von Koenigsegg walks you through it: (more…)