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Penny Board
A Penny board is a type of skateboard that is characterized by a short and narrow plastic deck. Although such skateboards were first manufactured during the 1970s, their name and contemporary popularity come from the Australian brand Penny Skateboards, founded in 2010. The company's name has since been widely genericized to describe all small plastic skateboards. History The first line of plastic skateboards was launched in the 1970s by Larry Stevenson for his brand. Greentech also began to manufacture plastic skateboards.Courtney RubinPenny Skateboards Find a Niche ''Nytimes.com'', 22 July 2015 These plastic skateboards were widely popular during the early 1970s, although the era's professional skaters still shunned them in favor of wooden boards. By 1978, laminated wooden decks had become the industry standard. Ben Mackay created the Penny board in 2010, from which the brand Penny Skateboards was born. MacKay named the brand for his sister, Penny. The idea behind the c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Skateboard
A skateboard is a type of sports equipment used for skateboarding. It is usually made of a specially designed 7–8-ply maple plywood deck and has polyurethane wheels attached to the underside by a pair of skateboarding trucks. The skateboard moves by pushing with one foot while the other foot remains balanced on the board, or by Pump (skateboarding), pumping one's legs in structures such as a bowl or half pipe. A skateboard can also be used by standing on the deck while on a downward slope and allowing gravity to propel the board and the rider. If the rider's leading foot is their left foot, they are said to ride "regular". Conversely, they are said to ride "goofy" if their leading foot is their right foot. The two main types of skateboards are the longboard and shortboard. The shape of the board is also important: the skateboard must be concaved to perform tricks. History Skateboarding, as it exists today, was probably born sometime in the late 1940s, or early 1950s, when ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Generic Trademark
A generic trademark, also known as a genericized trademark or proprietary eponym, is a trademark or brand name that, because of its popularity or significance, has become the generic term for, or synonymous with, a general class of products or services, usually against the intentions of the trademark's owner. A trademark is prone to genericization, or "genericide", when a brand name acquires substantial market dominance or mind share, becoming so widely used for similar products or services that it is no longer associated with the trademark owner, e.g., linoleum, bubble wrap, thermos, and aspirin. A trademark thus popularized is at risk of being challenged or revoked, unless the trademark owner works sufficiently to correct and prevent such broad use. Trademark owners can inadvertently contribute to genericization by failing to provide an alternative generic name for their product or service or using the trademark in similar fashion to generic terms. In one example, the Oti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Larry Stevenson
Richard Lawrence "Larry" Stevenson (December 22, 1930 – March 25, 2012) was the inventor of the kicktail, the bent-upwards end of a skateboard, which made most of today's skateboarding tricks possible and essentially revolutionized the sport. Early life Stevenson was born in 1930 in Los Angeles, California; his mother was Inez Kiem and his father was Leonard Stevenson. After high school Larry Stevenson joined the U.S. Navy as a fighter mechanic. He served for two years in the Korean War. After that, he went on to Santa Monica College Santa Monica College (SMC) is a Public university, public community college in Santa Monica, California. Founded as a Junior college#United States, junior college in 1929, SMC enrolls over 30,000 students in more than 90 fields of study. The coll ... in California and became a swimmer. He played water polo and swam for Coach John Josephs. Stevenson won the all American award for fastest time for the breast stroke. The record was only ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Barefoot
Being barefoot is the state of not wearing any footwear. There are health benefits and some risks associated with going barefoot. Shoes, while they offer protection, can limit the flexibility, strength, and mobility of the foot and can lead to higher incidences of flexible flat foot, bunions, hammer toe, and Morton's neuroma. Walking and running barefoot results in a more natural gait, allowing for a more rocking motion of the foot, eliminating the hard heel strike and generating less collision force in the foot and lower leg. There are many sports that are performed barefooted, most notably gymnastics, martial arts and swimming, but also beach volleyball, barefoot running, barefoot hiking, and barefoot waterskiing. Historical and religious aspects Historical aspects The ancient Spartans required boys to go barefoot as part of their obligatory military training, and the athletes at the ancient Olympic Games typically participated barefoot and naked. Although the G ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shibuya, Tokyo
is a special ward in Tokyo, Japan. A major commercial center, Shibuya houses one of the busiest railway stations in the world, Shibuya Station. As of January 1, 2024, Shibuya Ward has an estimated population of 230,609 in 142,443 households and a population density of . The total area is . Notable neighborhoods and districts of Shibuya include Harajuku, Ebisu, Omotesandō, Yoyogi and Sendagaya. Shibuya came into the possession of the Shibuya clan in the early 1160s, after which the area was named. The branch of the clan that ruled this area was defeated by the Later Hōjō clan on January 13, 1524, during the Sengoku period, and the area then came under their control. During the Edo period, Shibuya, particularly Maruyamachō on Dōgenzaka, prospered as a town on Oyama Road (present-day Route 246), and in the Meiji era, as a Hanamachi. Shibuya emerged as a railway terminus during the expansion of the railway network beginning in the 19th century, and was incorporat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polycarbonate
Polycarbonates (PC) are a group of thermoplastic polymers containing carbonate ester, carbonate groups in their chemical structures. Polycarbonates used in engineering are strong, toughness, tough materials, and some grades are optically transparent. They are easily worked, injection molding, molded, and thermoforming, thermoformed. Because of these properties, polycarbonates find many applications. Polycarbonates do not have a unique resin identification code, resin identification code (RIC) and are identified as "Other", 7 on the RIC list. Products made from polycarbonate can contain the precursor monomer bisphenol A (BPA). Structure Carbonate esters have planar OC(OC)2 cores, which confer rigidity. The unique O=C bond is short (1.173 Å in the depicted example), while the C-O bonds are more ether-like (the bond distances of 1.326 Å for the example depicted). Polycarbonates received their name because they are polymers containing carbonate ester, carbonate groups (−O−( ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Skateboard Trucks
A skateboard is a type of sports equipment used for skateboarding. It is usually made of a specially designed 7–8-ply maple plywood deck and has polyurethane wheels attached to the underside by a pair of skateboarding trucks. The skateboard moves by pushing with one foot while the other foot remains balanced on the board, or by pumping one's legs in structures such as a bowl or half pipe. A skateboard can also be used by standing on the deck while on a downward slope and allowing gravity to propel the board and the rider. If the rider's leading foot is their left foot, they are said to ride "regular". Conversely, they are said to ride "goofy" if their leading foot is their right foot. The two main types of skateboards are the longboard and shortboard. The shape of the board is also important: the skateboard must be concaved to perform tricks. History Skateboarding, as it exists today, was probably born sometime in the late 1940s, or early 1950s, when surfers in Califor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polyurethane
Polyurethane (; often abbreviated PUR and PU) is a class of polymers composed of organic chemistry, organic units joined by carbamate (urethane) links. In contrast to other common polymers such as polyethylene and polystyrene, polyurethane term does not refer to the single type of polymer but a group of polymers. Unlike polyethylene and polystyrene, polyurethanes can be produced from a wide range of starting materials resulting in various polymers within the same group. This chemical variety produces polyurethanes with different chemical structures leading to many List of polyurethane applications, different applications. These include rigid and flexible foams, and coatings, adhesives, Potting (electronics), electrical potting compounds, and fibers such as spandex and polyurethane laminate (PUL). Foams are the largest application accounting for 67% of all polyurethane produced in 2016. A polyurethane is typically produced by reacting a polymeric isocyanate with a polyol. Since a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plastic
Plastics are a wide range of synthetic polymers, synthetic or Semisynthesis, semisynthetic materials composed primarily of Polymer, polymers. Their defining characteristic, Plasticity (physics), plasticity, allows them to be Injection moulding, molded, Extrusion, extruded, or Compression molding, pressed into a diverse range of solid forms. This adaptability, combined with a wide range of other properties such as low weight, durability, flexibility, chemical resistance, low toxicity, and low-cost production, has led to their widespread use around the world. While most plastics are produced from natural gas and petroleum, a growing minority are produced from renewable resources like polylactic acid. Between 1950 and 2017, 9.2 billion metric tons of plastic are estimated to have been made, with more than half of this amount being produced since 2004. In 2023 alone, preliminary figures indicate that over 400 million metric tons of plastic were produced worldwide. If global trends ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Craig Snyder (writer)
Craig Snyder is an American writer, poet, and photographer. He is also a historian of skate and surf culture. Life and career Born and raised in South Florida, Snyder grew up skating with many of the skate stars that had laid the foundation for modern skateboarding including Alan Gelfand, Mike McGill, and Rodney Mullen. He also worked as a photographer and contributed to a number of skate magazines including SkateBoarder. Snyder's images have been published internationally by ESPN, Der Spiegel (, , stylized in all caps) is a German weekly news magazine published in Hamburg. With a weekly circulation of about 724,000 copies in 2022, it is one of the largest such publications in Europe. It was founded in 1947 by John Seymour Chaloner ..., TransWorld Skateboarding, and Concrete Wave, and appeared in a number of books, films, and exhibitions. From photography, Snyder expanded into poetry, writing, and art. He has collaborated with musicians from the United States, Canada, Eur ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
