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At only 8 pounds, this is the lightest walker on our list — and maybe one of the lightest walkers on the market! It's foldable, which means it's great for travel or commuting, and you can even ...
A different approach to the walker is the rollator, also called wheeled walker, invented by the Swede Aina Wifalk in 1978. Wifalk had polio . [ 9 ] [ 10 ] Although originally a brand name, "rollator" has become a genericized trademark for wheeled walkers in many countries, and is also the most common type of walker in several European countries.
A rococo sedan chair arrives at a garden party; 19th-century oil painting by G. Borgelli. By the mid-17th century, sedans for hire had become a common mode of transportation. London had "chairs" available for hire in 1634, each assigned a number and the chairmen licensed because the operation was a monopoly of a courtier of King Charles I.
Where an ultra-lightweight manual chair may weigh under 10 kg, the largest outdoor power-chairs may weigh 200 kg or more. Smaller power chairs often have four wheels, with front or rear wheel drive, but large outdoor designs commonly have six wheels, with small wheels at front and rear and somewhat larger powered wheels in the centre.
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.
The design took off and soon "strollers" were easier to transport and used everywhere. In the 1970s, however, the trend was more towards a more basic version, not fully sprung, and with a detachable body known as a "carrycot". [notes 1] Now, prams are very rarely used, being large and expensive when compared with "buggies" (see below).