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No-line Court
The multi-colored no-line tennis court is a variant design for a tennis court introduced by World TeamTennis (WTT) during its early years. The different areas of the no-line tennis court are defined by colors instead of white lines. White lines on a standard tennis court are painted onto a single or two-tone, colored background, as required by the rules of the United States Tennis Association (USTA) and the International Tennis Federation (ITF). Development The original multi-colored, no-line tennis court has eleven separate colored areas with no segregating lines. As a functional, no-line tennis court design it was issued a USPTO utility paten#4,045,022in 1977 to its inventors, Geoffrey Grant, an avid and successful senior tennis competitor, and Robert Nicks, an engineer. These two inventors also developed, tested and patented (USPTO patent# 3,982,759the original tennis electronic line judge used by the men's World Championship Tennis and women's tennis tours in 1974–75. Vari ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tennis Court
A tennis court is the venue where the sport of tennis is played. It is a firm rectangular surface with a low net stretched across the centre. The same surface can be used to play both doubles and singles matches. A variety of surfaces can be used to create a tennis court, each with its own characteristics which affect the playing style of the game. Dimensions The dimensions of a tennis court are defined and regulated by the International Tennis Federation (ITF) governing body and are written down in the annual 'Rules of Tennis' document. The court is long. Its width is for singles matches and for doubles matches. The service line is from the net. Additional clear space around the court is needed in order for players to reach overrun balls for a total of wide and long. A net is stretched across the full width of the court, parallel with the baselines, dividing it into two equal ends. The net is high at the posts, and high in the center. The net posts are outside the d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
World TeamTennis
World TeamTennis (WTT) is a mixed-gender professional tennis league played with a team format in the United States, which was founded in 1973. The league's season normally takes place in the summer months. Players from the ATP and WTA take a break from their tour schedules to partake in World TeamTennis. WTT was the first professional sports league to grant equal status to each man and woman competing for their teams. Many top tennis players have participated in the league over the years, including Billie Jean King, Rod Laver, Björn Borg, Chris Evert, John McEnroe, Evonne Goolagong, Jimmy Connors, Martina Navratilova, Andre Agassi, Pete Sampras, Michael Chang, Serena Williams, Venus Williams, Lindsay Davenport, Kim Clijsters, Martina Hingis, John Isner, Sam Querrey, Sloane Stephens, Naomi Osaka, and Frances Tiafoe. Format Originally played on a no-line court, each match consists of five sets. Each set features a different configuration (men's singles, men's doubles, wom ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States Tennis Association
The United States Tennis Association (USTA) is the national governing body for tennis in the United States. A not-for-profit organization with more than 700,000 members, it invests 100% of its proceeds to promote and develop the growth of tennis, from the grass-roots to the professional levels. The association was created to standardize rules and regulations and to promote and develop the growth of tennis in the United States. The USTA runs the USTA Billie Jean King National Tennis Center which hosts the US Open every year. The USTA has leagues in most places for adults skill levels between beginner and pro. The USTA also hosts tournaments across the country every weekend for club players or professionals. History The USTA was previously known as the United States National Lawn Tennis Association (USNLTA) and was established in 1881 by a small group of tennis club members in New York City and northeastern clubs, where most lawn tennis was played. In 1920 the word 'National' was ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
International Tennis Federation
The International Tennis Federation (ITF) is the governing body of world tennis, wheelchair tennis, and beach tennis. It was founded in 1913 as the International Lawn Tennis Federation by twelve national tennis associations. As of 2016, there are 211 national and six regional associations that make up ITF's membership. The ITF's governance responsibilities include maintaining and enforcing the rules of tennis, regulating international team competitions, promoting the game, and preserving the sport's integrity via anti-doping and anti-corruption programs. The ITF partners with the Women's Tennis Association (WTA) and the Association of Tennis Professionals (ATP) to govern professional tennis. The ITF organizes the Grand Slam events, annual team competitions for men ( Davis Cup), women (Billie Jean King Cup), and mixed teams (Hopman Cup), as well as tennis and wheelchair tennis events at the Summer Olympic and Paralympic Games on behalf of the International Olympic Committee. T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
USPTO
The United States Patent and Trademark Office (USPTO) is an agency in the U.S. Department of Commerce that serves as the national patent office and trademark registration authority for the United States. The USPTO's headquarters are in Alexandria, Virginia, after a 2005 move from the Crystal City area of neighboring Arlington, Virginia. The USPTO is "unique among federal agencies because it operates solely on fees collected by its users, and not on taxpayer dollars". Its "operating structure is like a business in that it receives requests for services—applications for patents and trademark registrations—and charges fees projected to cover the cost of performing the services tprovide . The Office is headed by the Under Secretary of Commerce for Intellectual Property and Director of the United States Patent and Trademark Office, a position last held by Andrei Iancu until he left office on January 20, 2021. Commissioner of Patents Drew Hirshfeld is performing the funct ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electronic Line Judge (tennis)
An electronic line judge is a device used in tennis to automatically detect where a ball has landed on the court. Attempts to revolutionize tennis officiating and the judging of calls in the sport began in the early 1970s and has resulted in the design, development and prototyping of several computerized, electronic line-judge devices. The methods have been based upon the use of pressure sensors, sensors to detect magnetized or electrically conductive tennis balls, infrared laser beams, and most recently video cameras. Development The first successful public demonstration of a computerized device to make automated line calls at a professional tennis tournament was in 1974. (The Electroline-control computer pictured at the right). This original tennis electronic line judge device, invented by Geoffrey Grant, an avid tennis player, and Robert Nicks, an electronics engineer, was used in the championship finals of both the Men's World Championship Tennis in Dallas in May, 1974 and the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
World Championship Tennis
World Championship Tennis (WCT) was a tour for professional male tennis players established in 1968 (the first players signed a contract at the end of 1967) and lasted until the emergence of the ATP Tour in 1990. A number of tennis tournaments around the world were affiliated with WCT and players were ranked in a special WCT ranking according to their results in those tournaments. The WCT had an important impact on the commercial development of tennis. It instituted a tie-breaker system and outfitted players with colored clothing, a radical idea at that time. WCT also strongly encouraged the audience to cheer for players, rather than politely applaud, as the more staid tennis audiences had done before. They publicly emphasized their prize money structure and special bonus pool as an incentive to attract top players. History World Championship Tennis was founded in September 1967 by New Orleans sports promoter David Dixon, who had earlier witnessed the dreary conditions of the prof ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Advanta
Advanta (TSO Financial until 1988) was an American banking company. It controlled two banks, Advanta Bank Corp and Advanta National Bank. (It is not associated with Advanta Energy Corp., a California energy consultancy.) Growth Advanta began in 1951 as a provider of personal loans to schoolteachers. In 1971, when the current CEO, Dennis Alter, took over the company from his father, it had 30 employees. It served mostly teachers and was licensed only in Pennsylvania, Florida and Delaware. It only provided fixed-payment loans; it did not own any banks nor was it involved in the mortgage or financing business. In the early 1990s, when its assets were at an all-time high of $25 billion, the firm had the sixth-largest consumer credit card business in the United States, with seven million credit card holders. In 1999, the company sold this part of its business, including and related assets, focusing instead on the small business market. Advanta's earnings for 2003 were $28.2 million, an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tennis Court Surfaces
Tennis is a racket sport that is played either individually against a single opponent (singles) or between two teams of two players each ( doubles). Each player uses a tennis racket that is strung with cord to strike a hollow rubber ball covered with felt over or around a net and into the opponent's court. The object of the game is to manoeuvre the ball in such a way that the opponent is not able to play a valid return. The player who is unable to return the ball validly will not gain a point, while the opposite player will. Tennis is an Olympic sport and is played at all levels of society and at all ages. The sport can be played by anyone who can hold a racket, including wheelchair users. The modern game of tennis originated in Birmingham, England, in the late 19th century as lawn tennis. It had close connections both to various field (lawn) games such as croquet and bowls as well as to the older racket sport today called real tennis. The rules of modern tennis have changed ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
