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Kick Scooter
A kick scooter (also referred to as a push-scooter or scooter) is a human-powered street vehicle with a handlebar, deck, and wheels propelled by a rider pushing off the ground with their leg. Today the most common scooters are made of aluminum, titanium, and steel. Some kick scooters made for younger children have 3 to 4 wheels (but most common ones have 2 wheels) and are made of plastic and do not fold. High-performance kickbikes are also made. Motorized scooters, historically powered by internal combustion engines, and more recently electric motors, are self-propelled kick scooters capable of speeds sometimes exceeding . Models and history Early scooters Kick scooters have been handmade in industrial urban areas in Europe and the United States since the 1920s or earlier, often as play items made for children to roam the streets. One common home-made version is made by attaching roller skate wheelsets to a board with some kind of handle, usually an old box. To turn, ride ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Inline Skates
Inline skates are a type of roller skate used for inline skating. Unlike quad skates, which have two front and two rear wheels, inline skates typically have two to five wheels arranged in a single line. Some, especially those for recreation, have a rubber "stop" or "brake" block attached to the rear of one or occasionally both of the skates so that the skater can slow down or stop by leaning back on the foot with the brake skate. During the late 1980s and early 1990s, Rollerblade, Inc., a company founded by Scott and Brennan Olson in Minneapolis, Minnesota, widely promoted inline skating through the registered trademark ''Rollerblade''. This term has since become a generic trademark for inline skates. History John Joseph Merlin experimented with single- to many-rowed devices worn on feet in 1760. Inline skates, skates designed to work like ice skates during periods of warm weather, was patented by Robert John Tyers of London in 1823, his Rolito design featured brass whee ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aluminium
Aluminium (aluminum in AmE, American and CanE, Canadian English) is a chemical element with the Symbol (chemistry), symbol Al and atomic number 13. Aluminium has a density lower than those of other common metals, at approximately one third that of steel. It has a great affinity towards oxygen, and Passivation (chemistry), forms a protective layer of Aluminium oxide, oxide on the surface when exposed to air. Aluminium visually resembles silver, both in its color and in its great ability to reflect light. It is soft, Magnetism, non-magnetic and ductility, ductile. It has one stable isotope, 27Al; this isotope is very common, making aluminium the twelfth most common element in the Universe. The radioactivity of Aluminum-26, 26Al is used in Radiometric dating, radiodating. Chemically, aluminium is a post-transition metal in the boron group; as is common for the group, aluminium forms compounds primarily in the +3 oxidation state. The aluminium cation Al3+ is small and h ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Denis Johnson (inventor)
Denis Johnson ( – 25 December 1833) was an English coachmaker who worked on Long Acre, London, England. He was a pioneer bicycle-maker. Biography Johnson was married to Mary Newman in St Anne's Church, Soho in 1792 and they had two daughters. He worked out of 75 Long Acre for about 15 years from 1818. Johnson continued as a coachmaker until he died on Christmas Day 1833. The family business continued to trade here until 1867. Bicycle maker Johnson created an improved version of the German Karl Drais's Draisine, the archetypal bicycle. Johnson's "pedestrian curricle" was patented in London in December 1818, becoming Britain's first bicycle. It featured an elegantly curved wooden frame, allowing the use of larger wooden wheels. Several parts were made of metal, which allowed the vehicle to be lighter than the continental version. Although Johnson referred to his machine as a ‘pedestrian curricle’, it was formally referred to as a ‘velocipede’, and popularly as ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kicksled
The kicksled or spark is a small sled consisting of a chair mounted on a pair of flexible metal runners that extend backward to about twice the chair's length. The sled is propelled by kicking (''sparka'' or ''sparke'' in the Scandinavian languages) the ground by foot. There is a handlebar attached to the top of the chair back. "Kicksled" is a direct translation of the Finnish word ''potkukelkka''. Estonian calls it either "pushsled" (''tõukekelk'') or "Finnish sled" (''Soome kelk''). Some other possible translations are "kicker" and "chair-sled". Design The typical adult sized sled has runners about long, spaced apart. The steel runner blades are about wide.The handlebars are about above ground. The kicksled is driven forward by the driver standing on one runner, kicking backwards on the ground with the other foot, hence the name. The flexibility of the runners allows the driver to steer the kicksled by twisting the handlebars. One can have a passenger or luggage ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amish
The Amish (; pdc, Amisch; german: link=no, Amische), formally the Old Order Amish, are a group of traditionalist Anabaptist Christian church fellowships with Swiss German and Alsatian origins. They are closely related to Mennonite churches, another Anabaptist denomination. The Amish are known for simple living, plain dress, Christian pacifism, and slowness to adopt many conveniences of modern technology, with a view neither to interrupt family time, nor replace face-to-face conversations whenever possible, and a view to maintain self-sufficiency. The Amish value rural life, manual labor, humility and '' Gelassenheit'' (submission to God's will). The history of the Amish church began with a schism in Switzerland within a group of Swiss and Alsatian Mennonite Anabaptists in 1693 led by Jakob Ammann. Those who followed Ammann became known as Amish. In the second half of the 19th century, the Amish divided into Old Order Amish and Amish Mennonites; the latter do not abstain ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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