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Some detachable chairlifts have so-called bubble chairs, which add a retractable acrylic glass dome to protect passengers from weather. An alternative system for reconciling slow boarding speeds with fast rope speeds is the carpet lift: the chairs move at full speed even through the terminal. Boarding passengers are progressively accelerated on ...
In 1655, Stephan Farffler, a 22-year-old paraplegic watchmaker, built the world's first self-propelling chair on a three-wheel chassis using a system of cranks and cogwheels. [ 20 ] [ 21 ] However, the device had an appearance of a hand bike more than a wheelchair since the design included hand cranks mounted at the front wheel.
Human-powered transport is the transport of person(s) and/or goods using human muscle power. Unlike animal-powered transport , human-powered transport has existed since time immemorial in the form of walking , running and swimming , as well as small vehicles such as litters , rickshaws , wheelchairs and wheelbarrows .
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Cracks, crevices and stubborn surfaces can't elude the power and maneuverability of this lightweight handheld vac. Cleverly engineered, this 1.5-pound vac is great for "detailing" a car interior.
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