Adidas AG is a multinational corporation and headquartered in Herzogenaurach, that designs and manufactures shoes and accessories. It is the largest sportswear manufacturer in Europe, the second largest in the world, after Nike, it is the holding company for the Adidas Group, which consists of the Reebok sportswear company, TaylorMade golf company, Runtastic, an Austrian fitness technology company and 8.33% of German football club Bayern Munich. Adidas' revenue for 2016 was listed at €19.29 billion. The company was started by Adolf Dassler in his mother's house. Dassler assisted in the development of spiked running shoes for multiple athletic events. To enhance the quality of spiked athletic footwear, he transitioned from a previous model of heavy metal spikes to utilising canvas and rubber. Dassler persuaded U. S. sprinter Jesse Owens to use his handmade spikes at the 1936 Summer Olympics. In 1949, following a breakdown in the relationship between the brothers, Adolf created Adidas, Rudolf established Puma, which became Adidas' business rival.
Adidas' logo is three stripes, used on the company's clothing and shoe designs as a marketing aid. The branding, which Adidas bought in 1952 from Finnish sports company Karhu Sports, became so successful that Dassler described Adidas as "The three stripes company"; the brand name is uncapitalized and is stylized with a lower case "a". Adidas was founded by Adolf "Adi" Dassler who made sports shoes in his mother's scullery or laundry room in Herzogenaurach, Germany after his return from World War I. In July 1924, his older brother Rudolf joined the business, which became Dassler Brothers Shoe Factory; the electricity supply in Herzogenaurach was unreliable, so the brothers sometimes had to use pedal power from a stationary bicycle to run their equipment. Dassler assisted in the development of spiked running shoes for multiple athletic events. To enhance the quality of spiked athletic footwear, he transitioned from a previous model of heavy metal spikes to utilising canvas and rubber. In 1936, Dassler persuaded U.
S. sprinter Jesse Owens to use his hand made spikes at the 1936 Summer Olympics. Following Owens' four gold medals, the name and reputation of Dassler shoes became known to the world's sportsmen and their trainers. Business was successful and the Dasslers were selling 200,000 pairs of shoes every year before World War II; the Dolbury factory, used for production of anti-tank weapons during the Second World War, was nearly destroyed in 1945 by US forces, but was spared when Dassler's wife, convinced the GIs that the company and its employees were only interested in manufacturing sports shoes. American occupying forces subsequently became major buyers of the Dassler brothers' shoes; the brothers split up in 1947 after relations between them had broken down, with Rudolf forming a new firm that he called Ruda – from Rudolf Dassler rebranded Puma, Dassler forming a company formally registered as Adidas AG from Adi Dassler on 18 August 1949. Although it is a popular urban myth that the name is an acronym for All Day I Dream About Sports, that phrase is a "backronym".
Puma SE and Adidas entered into a bitter business rivalry after the split. Indeed, the town of Herzogenaurach was divided on the issue, leading to the nickname "the town of bent necks"—people looked down to see which shoes strangers wore; the town's two football clubs were divided: ASV Herzogenaurach club was supported by Adidas, while 1 FC Herzogenaurach endorsed Rudolf's footwear. When handymen were called to Rudolf's home, they would deliberately wear Adidas shoes. Rudolf would tell them to pick out a pair of free Pumas; the two brothers were never reconciled and although both are now buried in the same cemetery, they are spaced as far apart as possible. In 1948, the first football match after World War II, several members of the West German national football team wore Puma boots, including the scorer of West Germany's first post-war goal, Herbert Burdenski. Four years at the 1952 Summer Olympics, 1500 metres runner Josy Barthel of Luxembourg won Puma's first Olympic gold in Helsinki, Finland.
At the 1960 Summer Olympics, Puma paid German sprinter Armin Hary to wear Pumas in the 100 meter sprint final. Hary had worn Adidas before and asked Adolf for payment; the German won gold in Pumas, but laced up Adidas for the medals ceremony, to the shock of the two Dassler brothers. Hary hoped to cash in from both. In 1952, following the 1952 Summer Olympics, Adidas acquired its signature 3-stripe logo from the Finnish athletic footwear brand Karhu Sports, for two bottles of whiskey and the equivalent of 1600 euros. After a period of trouble following the death of Adolf Dassler's son Horst Dassler in 1987, the company was bought in 1989 by French industrialist Bernard Tapie, for ₣1.6 billion, which Tapie borrowed. Tapie was at the time a famous specialist of rescuing bankrupt companies, an expertise on which he built his fortune. Tapie decided to move production offshore to Asia, he hired Madonna for promotion. He sent, from Christchurch, New Zealand, a shoe sales representative to Germany and met Adolf Dassler's descendants and was sent back with a few items to promote the company there.
In 1992, unable to pay the loan interest, Tapie mandated the Crédit Lyonnais bank to sell Adidas, the bank subsequently
Fireworks are a class of low explosive pyrotechnic devices used for aesthetic and entertainment purposes. The most common use of a firework is as part of a fireworks display, a display of the effects produced by firework devices. Fireworks competitions are regularly held at a number of places. Fireworks take many forms to produce the four primary effects: noise, light and floating materials, they may be designed to burn with colored flames and sparks including red, yellow, blue and silver. Displays are common throughout the world and are the focal point of many cultural and religious celebrations. Fireworks are classified as to where they perform, either as a ground or aerial firework. In the latter case they may be shot into the air by a mortar; the most common feature of fireworks is a paper or pasteboard tube or casing filled with the combustible material pyrotechnic stars. A number of these tubes or cases are combined so as to make when kindled, a great variety of sparkling shapes variously colored.
A skyrocket is a common form of firework. The aerial shell, however, is the backbone of today's commercial aerial display, a smaller version for consumer use is known as the festival ball in the United States; such rocket technology has been used for the delivery of mail by rocket and is used as propulsion for most model rockets. Fireworks were invented in medieval China around the early 9th century. One of the cultural practices for fireworks was to scare away evil spirits. Cultural events and festivities such as the Chinese New Year and the Mid-Autumn Moon Festival were and still are times when fireworks are guaranteed sights. China is exporter of fireworks in the world. Colored fireworks were invented in Europe in the 1830s. Modern skyrocket fireworks were invented in the early 20th century; the earliest documentation of fireworks dates back to about the early 9th-century medieval Chinese Tang Dynasty. The fireworks were used to accompany many festivities; the art and science of firework making has developed into an independent profession.
In China, pyrotechnicians were respected for their knowledge of complex techniques in mounting firework displays. Chinese people believed that the fireworks could expel evil spirits and bring about luck and happiness. During the Song Dynasty, many of the common people could purchase various kinds of fireworks from market vendors, grand displays of fireworks were known to be held. In 1110, a large fireworks display in a martial demonstration was held to entertain Emperor Huizong of Song and his court. A record from 1264 states that a rocket-propelled firework went off near the Empress Dowager Gong Sheng and startled her during a feast held in her honor by her son Emperor Lizong of Song. Rocket propulsion was common in warfare, as evidenced by the Huolongjing compiled by Liu Bowen and Jiao Yu. In 1240 the Arabs acquired knowledge of its uses from China. A Syrian named Hasan al-Rammah wrote of rockets and other incendiaries, using terms that suggested he derived his knowledge from Chinese sources, such as his references to fireworks as "Chinese flowers".
In regards to colored fireworks, this was derived and developed from earlier Chinese application of chemical substances to create colored smoke and fire. Such application appears in the Huolongjing and Wubeizhi, which describes recipes, several of which used low-nitrate gunpowder, to create military signal smokes with various colors. In the Wubei Huolongjing, two formulas appears for firework-like signals, the sanzhangju and baizhanglian, that produces silver sparkles in the smoke. In the Huoxilüe by Zhao Xuemin, there are several recipes with low-nitrate gunpowder and other chemical substances to tint flames and smoke; the Chinese pyrotechnics have been written about by foreign authors such as Antoine Caillot who wrote "It is certain that the variety of colours which the Chinese have the secret of giving to flame is the greatest mystery of their fireworks." Or Sir John Barrow who wrote "The diversity of colours indeed with which the Chinese have the secret of cloathing fire seems to be the chief merit of their pyrotechny."Fireworks were produced in Europe by the 14th century, becoming popular by the 17th century.
Lev Izmailov, ambassador of Peter the Great, once reported from China: "They make such fireworks that no one in Europe has seen." In 1758, the Jesuit missionary Pierre Nicolas le Chéron d'Incarville, living in Beijing, wrote about the methods and composition on how to make many types of Chinese fireworks to the Paris Academy of Sciences, which revealed and published the account five years later. Amédée-François Frézier published his revised work Traité des feux d'artice pour le spectacle in 1747, covering the recreational and ceremonial uses of fireworks, rather than their military uses. Music for the Royal Fireworks was composed by George Frideric Handel in 1749 to celebrate the Peace treaty of Aix-la-Chapelle, declared the previous year. Improper use of fireworks may be dangerous, both to bystanders. For this reason, the use of fireworks is legally restricted. Display fireworks are restricted by law for use by professionals
A projection screen is an installation consisting of a surface and a support structure used for displaying a projected image for the view of an audience. Projection screens may be permanently installed, as in a movie theater; as in a conference room or other non-dedicated viewing space. Another popular type of portable screens are inflatable screens for outdoor movie screening. Uniformly white or grey screens are used exclusively as to avoid any discoloration to the image, while the most desired brightness of the screen depends on a number of variables, such as the ambient light level and the luminous power of the image source. Flat or curved screens may be used depending on the optics used to project the image and the desired geometrical accuracy of the image production, flat screens being the more common of the two. Screens can be further designed for front or back projection, the more common being front projection systems, which have the image source situated on the same side of the screen as the audience.
Different markets exist for screens targeted for use with digital projectors, movie projectors, overhead projectors and slide projectors, although the basic idea for each of them is much the same: front projection screens work on diffusely reflecting the light projected on to them, whereas back projection screens work by diffusely transmitting the light through them. In the commercial movie theaters, the screen is a reflective surface that may be either aluminized or a white surface with small glass beads; the screen has hundreds of small, evenly spaced holes to allow air to and from the speakers and subwoofer, which are directly behind it. Rigid wall-mounted screens maintain their geometry just like the big movie screens, which makes them suitable for applications that demand exact reproduction of image geometry; such screens are used in home theaters, along with the pull-down screens. Pull-down screens are used in spaces where a permanently installed screen would require too much space; these use painted fabric, rolled in the screen case when not used, making them less obtrusive when the screen is not in use.
Fixed-frame screens provide the greatest level of uniform tension on the screens surface, resulting in the optimal image quality. They are used in home theater and professional environments where the screen does not need to be recessed into the case. Electric screens can be wall ceiling mounted or ceiling recessed; these are larger screens, though electric screens are available for home theater use as well. Electric screens are similar to pull-down screens, but instead of the screen being pulled down manually, an electric motor raises and lowers the screen. Electric screens are raised or lowered using either a remote control or wall-mounted switch, although some projectors are equipped with an interface that connects to the screen and automatically lowers the screen when the projector is switched on and raises it when the projector is switched off. Switchable projection screens can be switched between clear. In the opaque state, projected image on the screen can be viewed from both sides, it is good for advertising on store windows.
Mobile screens use either a pull-down screen on a free stand, or pull up from a weighted base. These can be used when it is impractical to mount the screen to a wall or a ceiling. Both mobile and permanently installed pull-down screens may be of tensioned or not tensioned variety. Tensioned models attempt to keep the fabric flat and immobile, whereas the not tensioned models have the fabric of the screen hanging from their support structures. In the latter screens the fabric can stay immobile if there are currents of air in the room, giving imperfections to the projected image. Specialty screens may not fall into any of these categories; these include inflatable screens and others. See the respective articles for more information. One of the most quoted properties in a home theater screen is the gain; this is a measure of reflectivity of light compared to a screen coated with magnesium carbonate, titanium dioxide, or barium sulfate when the measurement is taken for light targeted and reflected perpendicular to the screen.
Titanium dioxide is a bright white colour, but greater gains can be accomplished with materials that reflect more of the light parallel to projection axis and less off-axis. Quoted gain levels of various materials range from 0.8 of light grey matte screens to 2.5 of the more reflective glass bead screens, some manufacturers claiming higher numbers for their products. High gain levels could be attained by using a mirror surface, although the audience would just see a reflection of the projector, defeating the purpose of using a screen. Many screens with higher gain are semi-glossy, so exhibit more mirror-like properties, namely a bright "hot spot" in the screen—an enlarged reflection of the projector’s lens. Opinions differ as to when this "hot spotting" begins to be distracting, but most viewers do not notice differences as large as 30% in the image luminosity, unless presented with a test image and asked to look for variations in brightness; this is possible because humans have greater sensitivity to contrast in smaller details, but less so in luminosity variations as great as half of the screen.
Other screens with higher gain are semi-retroreflective. Unlike mirrors, retroreflective surfaces reflect light back toward the source. Hot spotting is less of a problem with retroreflectiv
Barricade, from the French barrique, is any object or structure that creates a barrier or obstacle to control, block passage or force the flow of traffic in the desired direction. Adopted as a military term, a barricade denotes any improvised field fortification, such as on city streets during urban warfare. Barricades include temporary traffic barricades designed with the goal of dissuading passage into a protected or hazardous area or large slabs of cement whose goal is to prevent forcible passage by a vehicle. Stripes on barricades and panel devices slope downward in the direction traffic must travel. There are pedestrian barricades - sometimes called bike rack barricades for their resemblance to a now obsolete form of bicycle stand, or police barriers, they originated in France 50 years ago and are now produced around the world. They were first produced in the U. S. 40 years ago by Friedrichs Mfg for New Orleans's Mardi Gras parades. Anti-vehicle barriers and blast barriers are sturdy barricades that can counter vehicle and bomb attacks.
The origins of the barricade are erroneously traced back to the "First Day of the Barricades", a confrontation that occurred in Paris on 12 May 1588 in which the supporters of the Duke of Guise and the ultra-Catholic Holy League challenged the authority of King Henri III. In actuality, although barricades came to widespread public awareness in that uprising, none of several conflicting claims concerning who may have "invented" the barricade stand up to close scrutiny for the simple reason that Blaise de Monluc had documented insurgents' use of the technique at least as early as 1569 in religiously based conflicts in southwestern France. Although barricade construction began in France in the sixteenth century and remained an French practice for two centuries, the nineteenth century remained the classic era of the barricade. Contrary to a number of historical sources, barricades were present in various incidents of the great French Revolution of 1789, but they never played a central role in those events.
They were, however, a visible and consequential element in many of the insurrections that occurred in France throughout the 1800s, including in the revolutions of 1830 and 1848 Other Parisian events included the June Rebellion of 1832, smaller in scale, but rendered famous by Victor Hugo's account in Les Misérables, the combat that ended the Paris Commune in May 1871, the more symbolic structures created in May 1968. The barricade began its diffusion outside France in the 1780s and played a significant role in the Belgian Revolution of 1830, but it was only in the course of the upheaval of 1848 that it became international in scope, its spread across the Continent was aided by the circulation of students, political refugees, itinerant workers through the French capital, where many gained first-hand experience of one or another Parisian insurrection. The barricade had, by the middle of the nineteenth century, become the preeminent symbol of a revolutionary tradition that would spread worldwide.
Barricade references appear in many colloquial expressions and are used metaphorically, in poems and songs celebrating radical social movements. Barricades are used for crowd control applications at public events or during exceptionally busy shopping times. Different types of barricade are designed to fit the environment and use cases the organizer decides on. Bridge Feet Typically used for outdoor use, where the ground is not flat; the bridge design of the feet allows for better stability. Flat Feet Used on surfaces such as streets and tarmacs these barricades are designed for use on flat surfaces. Heavy Duty Feet Similar to flat feet, but larger in size and made of heavy duty steel, allowing for more durability and support. Barricade Gates These gates swing open like a doorway, allowing for passage of people of goods through a run of barricades. Expanding Barricades Designed for indoor use and for use on sites where construction or work is occurring. Easy to move and store these barricades serve as a temporary barricade.
Bulwark Border barrier Rampart Jersey barrier Visi-Flash Barricade Lights
In building construction, topping out is a builders' rite traditionally held when the last beam is placed atop a structure during its construction. Nowadays, the ceremony is parlayed into a media event for public relations purposes, it has since come to mean more finishing the structure of the building, whether there is a ceremony or not. The practice of "topping out" a new building can be traced to the ancient Scandinavian religious rite of placing a tree atop a new building to appease the tree-dwelling spirits displaced in its construction. Long an important component of timber frame building, it migrated to England and Northern Europe, thence to the Americas. A tree or leafy branch is placed on the topmost wood or iron beam with flags and streamers tied to it. A toast is drunk and sometimes workers are treated to a meal. In masonry construction the rite celebrates the bedding of the last brick. In some cases a topping out event is held at an intermediate point, such as when the roof is dried-in, which means the roof can provide at least semi-permanent protection from the elements.
The practice remains common in the United Kingdom and assorted Commonwealth countries such as Australia, Canada as well as Germany, Slovenia, Chile, Czech Republic, Poland, the Baltic States, the United States, where the last beam of a skyscraper is painted white and signed by all the workers involved. In New Zealand, completion of the roof to a water-proof state is celebrated through a "roof shout", where workers are treated to cake and beer; the tradition of "pannenbier" is popular in the Netherlands and Flanders, where a national, regional or city flag is hung once the highest point of a building is reached. It stays in place until the building's owner provides free beer to the workers, after which it is lowered, it is considered greedy. Groundbreaking John V. Robinson. "The'topping out' traditions of the high-steel ironworkers". Western Folklore, Fall 2001. "Topping Off!". Archived from the original on 2 June 2006. Retrieved 9 August 2008.. Carpenter Magazine, Sep/Oct 2001. Https://web.archive.org/web/20070311032321/http://www.stp.uh.edu/vol68/160/news/news4.html Tree symbolizes campus' growth.
"Topping Off". Archived from the original on September 28, 2008. Retrieved August 9, 2008.. National Review, December 23, 2003 Richtfest.info A German language site about the topping out ceremonies. Topping out Roberts Pavilion Topping out the new athletic building at Claremont McKenna College
Ngee Ann City
Ngee Ann City is a shopping and commercial centre located on Orchard Road, Singapore. The S$520 million building was opened on 21 September 1993 by Prime Minister, Goh Chok Tong. Many Singaporeans refer to Ngee Ann City as "Taka", a slang-abbreviation of the anchor tenant's name, Takashimaya. Ngee Ann City houses the High Commission of New Zealand, situated on the 15th floor of Tower A. In the 1950s, the land that Ngee Ann City sits on was a burial ground and managed by Ngee Ann Kongsi, it was part of a parcel of land known as Tai Shan Ting, bounded by Orchard Road, Paterson Road and Grange Road. A ten-storey Ngee Ann Building was built on the site, was demolished to make way for Ngee Ann City. Redevelopment of the site was first considered as early as 1967. Ngee Ann City was planned by Ngee Ann Development and the Orchard Square Development Corporation in the late 1980s. Raymond Woo, the architect who designed the complex, drew inspiration from the Great Wall of China; the intent was to reflect the dignity and strength of the Ngee Ann Kongsi.
Wong spent five years overseeing the project. The land belonging to Ngee Ann Kongsi was a much sought-after piece of real estate in Singapore. Ng Teng Fong of Far East Organisation was unsuccessful in his bid to buy the land after upping his offer to S$175 million from S$140 million; the land was sought by the owners of Hilton International Hotel. There were a series of disputes between Ngee Ann Kongsi and the Metro Group which had subsequently acquired the redevelopment rights; these were only resolved in 1981, resulting in the setting up of a joint venture in which Ngee Ann had a 73% stake, Metro the balance 27%. The partners paid for the dispute, as the Singapore Government acquired half the site in 1983; this left them only 28,322 square metres for development. Work on Ngee Ann City began; the construction of the S$520 million complex took four years. Ngee Ann City was opened by Prime Minister Goh Chok Tong on 31 August 1993. Ngee Ann City has Tower A and B which are both 26 storeys high. Among its many shops are the Takashimaya department store and Kinokuniya, the second-largest bookstore in Southeast Asia.
Until 2007, it housed part of the National Library Board on the 5th floor. Ngee Ann City is home to the largest Best Denki in Singapore, known as Big Best. In 2005, the shopping mall opened an art and creativity section on the 4th floor called iFORUM, the first of its kind in Singapore; when Ngee Ann City opened in 1993, Tangs Studio occupied three floors of the building at the Tower B section of the building. A few years the Level 2 of the department store was closed, it closed down in 1999 due to poor business; this part of the mall became part of the speciality shop section on the mall on Level 2, Books Kinokuniya on Level 3, a shop section children's boutiques and shops on Level 4, converted to iForum in 2005. The top floor of the mall, Level 5, was part of the upper level carpark. In 1997, the 5th floor was converted to retail space; the Civic Plaza is where roadshows, functions, performances are held. There is a fountain at the front of the Civic Plaza facing Orchard Road; the building is connected by underpasses to Wisma Atria, ION, Wheelock Place and Lucky Plaza.
The two towers of Ngee Ann City were intended by the designer to symbolise Chinese door gods, representing strength and unity. Tenants in the office tower include Takashimaya Singapore, Books Kinokuniya, Metro department store, Ngee Ann Development, some private office tenants and a medical floor on Level 8 of Tower B. Toshin Development Singapore Pte. Ltd. manages the speciality stores area of Takashimaya Shopping Centre located from basement 2 to level 4 of Ngee Ann City, covering over 370,000 square feet. "Ngee Ann City comes alive", The Straits Times, 7 August 1993 Tan Sung, "Takashimaya ready to face sluggish sector", The Straits Times, 6 August 1993 Takashimaya Department Store Takashimaya Shopping Centre Ngee Ann City
The Segway PT is a two-wheeled, self-balancing personal transporter by Segway Inc. It was invented by Dean Kamen and brought to market in 2001. HT is an initialism for'human transporter' and PT for'personal transporter'; the Segway PT was developed from the self-balancing iBOT wheelchair, developed at University of Plymouth, in conjunction with BAE Systems and Sumitomo Precision Products. Segway's first patent was filed in 1994 and granted in 1997 followed by others including one submitted in June 1999 and granted in October 2001; the invention and financing of the Segway was the subject of a book, a leak of information prior to publication of the book and the launch of the product led to excited speculation about the device and its importance. John Doerr speculated. South Park devoted an episode to making fun of the hype before the product was released. Steve Jobs was quoted as saying that it was "as big a deal as the PC", The device was unveiled on 3 December 2001, following months of public speculation, in Bryant Park, New York City, on the ABC News morning program Good Morning America with the first units delivered to customers in early 2002.
The original Segway models featured three speed settings: 6 miles per hour, 8 mph with faster turning, 10 mph. Steering of early versions was controlled using a twist grip that varied the speeds of the two motors; the range of the p-Series was 6–10 mi on a charged nickel metal hydride battery with a recharge time of 4–6 hours. In September 2003, the Segway PT was recalled, because if users ignored repeated low battery warnings on the PTs, it could lead them to fall. With a software patch to version 12.0, the PT would automatically slow down and stop in response to detecting low battery power. In August 2006 Segway discontinued all previous models and introduced the i2 and x2 products which were steered by leaning the handlebars to the right or left, had a maximum speed of 12.5 mph from a pair of 2 horsepower Brushless DC electric motor with regenerative braking and a range of up to 15–25 mi, depending on terrain, riding style and state of the batteries. Recharging took 8–10 hours; the i2 and x2 introduced the wireless InfoKey which could show mileage and a trip odometer, as well as put the Segway into Security mode, which locked the wheels and set off an alarm if it was moved, could be used to turn on the PT from up to 15 feet away.
Versions of the product prior to 2011 included: Segway i167 Segway e167: As i167, with addition of electric kickstand Segway p133: Smaller platform and wheels and less powerful motors than the i and e Series with top speed was 10 miles per hour in the p-Series Segway i180: With lithium-ion batteries Segway XT: The first Segway HT designed for recreation Segway i2: The first on-road Segway PT with LeanSteer Segway x2: The first off-road Segway PT with LeanSteerIn March 2014, Segway announced third generation designs, including the i2 SE and x2 SE sport, new LeanSteer frame and powerbase designs, with integrated lighting. Ninebot Inc. a Beijing-based transportation robotics startup and a Segway rival, acquired Segway in April 2015 having raised $80M from Xiaomi and Sequoia Capital. In June 2016 the company launched a smaller self-balancing scooter; as of July 2017 the following self-balancing scooters are available from Segway: ProfessionalSegway i2 SE Segway x2 SE Segway Robot ConsumerNinebot by Segway E+ Ninebot by Segway miniPro The dynamics of the Segway PT are similar to a classic control problem, the inverted pendulum.
It uses brushless DC electric motors in each wheel powered by lithium-ion batteries with balance achieved using tilt sensors, gyroscopic sensors developed by BAE Systems' Advanced Technology Centre. The wheels are driven forward or backward as needed to return its pitch to upright. See also: Personal transporter#International regulation In 2011 the Segway i2 was being marketed to the emergency medical services community; the special police forces trained to protect the public during the 2008 Summer Olympics used the Segway for mobility. The Segway miniPro is available to be used as the mobility section of a robot. Disability Rights Advocates for Technology promoted the use of the Segway PT on sidewalks as an Americans with Disabilities Act of 1990 issue. Segway Inc. cannot however market these devices in the US as medical devices and they have not been approved by the Food and Drug Administration as a medical device. The maximum speed of the Segway PT is 12.5 miles per hour. The product is capable of covering 24 mi on a charged lithium-ion battery, depending on terrain, riding style, the condition of the batteries.
The U. S. Consumer Product Safety Commission does not have Segway-specific recommendations but does say that bicycle helmets are adequate for "low-speed, motor-assisted" scooters. Segway polo Official website