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Airless Tire
Airless tires, non-pneumatic tires (NPT), or flat-free tires are tires that are not supported by air pressure. They can be used on small vehicles such as riding lawn mowers and motorized golf carts. They also are used on heavy equipment required to operate on sites where risk of tire punctures is high. Tires composed of closed-cell polyurethane foam are also made for bicycles and wheelchairs. Advantages & disadvantages The main advantages of airless tires is that they do not go flat and need to be replaced less frequently. Heavy equipment outfitted with airless tires will be able to carry more weight and engage in more rugged activities. Airless tires generally have higher rolling resistance and provide somewhat less suspension than similarly shaped and sized pneumatic tires. Other problems for airless heavy equipment tires include dissipating the heat buildup that occurs when they are driven. Airless tires are often filled with compressed polymers (plastic) rather than air, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2005 091112-28rim0051 Compressed
5 (five) is a number, numeral and digit. It is the natural number, and cardinal number, following 4 and preceding 6, and is a prime number. It has attained significance throughout history in part because typical humans have five digits on each hand. In mathematics 5 is the third smallest prime number, and the second super-prime. It is the first safe prime, the first good prime, the first balanced prime, and the first of three known Wilson primes. Five is the second Fermat prime and the third Mersenne prime exponent, as well as the third Catalan number, and the third Sophie Germain prime. Notably, 5 is equal to the sum of the ''only'' consecutive primes, 2 + 3, and is the only number that is part of more than one pair of twin primes, ( 3, 5) and (5, 7). It is also a sexy prime with the fifth prime number and first prime repunit, 11. Five is the third factorial prime, an alternating factorial, and an Eisenstein prime with no imaginary part and real part of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mobike Tire - 02
Mobike ( zh, s=摩拜单车, p=mó bài dān chē), also known as Meituanbike, founded by Beijing Mobike Technology Co., Ltd. ( zh, s=北京摩拜科技有限公司), is a fully station-less bicycle-sharing system headquartered in Beijing, China. It is, by the number of bicycles, the world's largest shared (for hire) bicycle operator, making Shanghai the world's largest bike-share city in December 2016. In April 2018, it was acquired by a Chinese web company Meituan-Dianping for US$2.7 billion. History In 2015, Mobike was established by a former journalist Hu Weiwei. Co-founder Wang Xiaofeng, the general manager for the Shanghai office of Uber also known by his English name Davis Wang, became Mobike's CEO. Not being able to purchase bikes from suppliers to the preferred specifications, the company built its own bikes which were rolled out from April 2016. In December 2016, the company made Shanghai the world's largest bike-share city. In June 2017, Mobike raised $600 million ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tires
A tire (American English) or tyre (British English) is a ring-shaped component that surrounds a wheel's rim to transfer a vehicle's load from the axle through the wheel to the ground and to provide traction on the surface over which the wheel travels. Most tires, such as those for automobiles and bicycles, are pneumatically inflated structures, which also provide a flexible cushion that absorbs shock as the tire rolls over rough features on the surface. Tires provide a footprint, called a contact patch, that is designed to match the weight of the vehicle with the bearing strength of the surface that it rolls over by providing a bearing pressure that will not deform the surface excessively. The materials of modern pneumatic tires are synthetic rubber, natural rubber, fabric, and wire, along with carbon black and other chemical compounds. They consist of a tread and a body. The tread provides traction while the body provides containment for a quantity of compressed air. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Run-flat Tire
A run-flat tire/tyre is a pneumatic vehicle tire that is designed to resist the effects of deflation when punctured, and to allow the vehicle to continue to be driven at reduced speeds - under – and for limited distances – usually , depending on the type of tire. Technologies There are three basic technologies currently available, described below. Self-supporting The origins of the commercial ''self-supporting'' run-flat tire started in 1935 with a tire that had a fabric inner tire. The tire was advertised as a protection against blowouts, a common and dangerous occurrence in the 1930s. In 1934, Michelin introduced a tire that was based on technology developed for local commuter trains and trolleys. It had a safety rim inside the tire which if punctured would run on a special foam lining. The tire was sold for military use and for specialized vehicles like bank armoured cars. It was advertised as "semi-bulletproof". While the tire performed as advertised it was far too ex ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hankook Tire
Hankook Tire & Technology (; , also known simply as Hankook and stylised ), is a South Korean tire company. Based in Seoul, Hankook is the seventh largest tire company in the world. History Hankook Tire was established by Jae Hun Chung's grandfather in 1941 as the Chosun Tire Company and was renamed to Hankook Tire Manufacturing in 1968. The word "Hankook" literally means Korea, thus Korea Tire Company. The company now supplies tires as original equipment to various automakers. In addition to producing about 102 million tires annually, the company also sells batteries, alloy wheels, and brake pads. Hankook Tire Co. has announced that the company will invest $1.1 billion to build a factory in West Java, Indonesia as part of a plan to become the 5th largest tire manufacturer in the world. On June 9, 2011 a ground breaking ceremony was held at a 60-hectare area as a regional hub production for export to Asian, North America and Middle East countries. In October 2013, the company ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Energy Return Wheel
In physics, energy (from Ancient Greek: ἐνέργεια, ''enérgeia'', “activity”) is the quantitative property that is transferred to a body or to a physical system, recognizable in the performance of work and in the form of heat and light. Energy is a conserved quantity—the law of conservation of energy states that energy can be converted in form, but not created or destroyed. The unit of measurement for energy in the International System of Units (SI) is the joule (J). Common forms of energy include the kinetic energy of a moving object, the potential energy stored by an object (for instance due to its position in a field), the elastic energy stored in a solid object, chemical energy associated with chemical reactions, the radiant energy carried by electromagnetic radiation, and the internal energy contained within a thermodynamic system. All living organisms constantly take in and release energy. Due to mass–energy equivalence, any object that has mass whe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bridgestone
is a Japanese multinational tire manufacturer founded in 1931 by Shojiro Ishibashi (1889–1976) in the city of Kurume, Fukuoka, Japan. The name Bridgestone comes from a calque translation and transposition of , meaning 'stone bridge' in Japanese. As of 2021, Bridgestone/ Firestone is the largest manufacturer of tires in the world, followed by Michelin in France, Goodyear in the United States, MRF in India, Continental in Germany and Pirelli in Italy. Bridgestone Group has 181 production facilities in 24 countries as of July 2018. History Origins The history of Bridgestone America dates back to the two separate companies that merged to form Bridgestone Tire company. The first one is Firestone Tire & Rubber Company, that was founded in August 1900 by Harvey Firestone and was headquartered in Akron, Ohio. The second one is the ''Bridgestone Tire Company, Ltd.'', founded in 1931 by Shojiro Ishibashi in Japan. The first Bridgestone tire was produced on 9 April 1930, by the J ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Humvee
The High Mobility Multipurpose Wheeled Vehicle (HMMWV; colloquial: Humvee) is a family of light, four-wheel drive, military trucks and utility vehicles produced by AM General. It has largely supplanted the roles previously performed by the original jeep, and others such as the Vietnam War-era M151 jeep, the M561 "Gama Goat", their M718A1 and M792 ambulance versions, the Commercial Utility Cargo Vehicle, and other light trucks. Primarily used by the United States military, it is also used by numerous other countries and organizations and even in civilian adaptations. The Humvee saw widespread use in the Gulf War of 1991, where it navigated the treacherous desert terrain; this usage helped to inspire civilian Hummer versions. The vehicle's original unarmored design was later seen to be inadequate. The vehicle was found to be particularly vulnerable to improvised explosive devices in the Iraq War. The U.S. hastily up-armored select models and replaced front-line units with ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clemson University
Clemson University () is a public land-grant research university in Clemson, South Carolina. Founded in 1889, Clemson is the second-largest university in the student population in South Carolina. For the fall 2019 semester, the university enrolled a total of 20,195 undergraduate students and 5,627 graduate students, and the student/faculty ratio was 18:1. Clemson's 1,400-acre campus is in the foothills of the Blue Ridge Mountains. The campus now borders Lake Hartwell, which was formed by the dam completed in 1962. The university manages the nearby 17,500-acre Clemson Experimental Forest that is used for research, education, and recreation. Clemson University consists of seven colleges: Agriculture, Forestry and Life Sciences; Architecture, Arts and Humanities; The Wilbur O. and Ann Powers College of Business; Behavioral, Social and Health Sciences; Education; Engineering, Computing and Applied Sciences; and Science. '' U.S. News & World Report'' ranks Clemson University ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tweel
The Tweel (a portmanteau of ''tire'' and ''wheel'') is an airless tire design developed by the French tire company Michelin. Its significant advantage over pneumatic tires is that the Tweel does not use a bladder full of compressed air, and therefore cannot burst, leak pressure, or become flat. Instead, the Tweel's hub is connected to the rim via flexible polyurethane spokes which fulfil the shock-absorbing role provided by the compressed air in a traditional tire. Design The Tweel consists of a band of conventional tire rubber with molded tread, a shear beam just below the tread that creates a compliant contact patch, a series of energy-absorbing polyurethane spokes, and an integral inner hub structure. Both the shear beam and the polyurethane spokes can be designed to provide a calibrated directional stiffness in order to control both how the Tweel handles and how it handles loads. The inner hub structure may be either rigid or compliant, depending on the application requir ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Michelin
Michelin (; ; full name: ) is a French multinational tyre manufacturing company based in Clermont-Ferrand in the Auvergne-Rhône-Alpes '' région'' of France. It is the second largest tyre manufacturer in the world behind Bridgestone and larger than both Goodyear and Continental. In addition to the Michelin brand, it also owns the Kléber tyres company, Uniroyal-Goodrich Tire Company, SASCAR, Bookatable and Camso brands. Michelin is also notable for its Red and Green travel guides, its roadmaps, the Michelin stars that the Red Guide awards to restaurants for their cooking, and for its company mascot '' Bibendum'', colloquially known as the Michelin Man. Michelin's numerous inventions include the removable tyre, the pneurail (a tyre for rubber-tyred metros) and the radial tyre. Michelin manufactures tyres for Space Shuttles, aircraft, automobiles, heavy equipment, motorcycles, and bicycles. In 2012, the group produced 166 million tyres at 69 facilities loc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bicycle-sharing System
A bicycle-sharing system, bike share program, public bicycle scheme, or public bike share (PBS) scheme, is a shared transport service where bicycles are available for shared use by individuals at low cost. The programmes themselves include both docking and dockless systems, where docking systems allow users to rent a bike from a dock, i.e., a technology-enabled bicycle rack and return at another node or dock within the system — and dockless systems, which offer a node-free system relying on smart technology. In either format, systems may incorporate smartphone web mapping to locate available bikes and docks. In July 2020, Google Maps began including bike share systems in its route recommendations. With its antecedents in grassroots mid-1960s efforts; by 2022, approximately 3,000 cities worldwide offer bike-sharing systems, e.g., Dubai, New York, Paris, Montreal and Barcelona. History The first bike sharing projects were initiated by various sources, such as ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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