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Spring Drive
Spring Drive is a name given to a series of watch movements produced by Epson in Shiojiri. The concept of using a mainspring to power a quartz timing package was first conceived in 1977 by Yoshikazu Akahane (赤羽 好和) at Suwa Seikosha (now a part of Seiko Epson after a 1985 merger). Specified to one second accuracy per day, the movement uses a conventional gear train as in traditional mechanical watches, but rather than an escapement and balance wheel, instead features Seiko's ''Tri-synchro Regulator'' system in which power delivery to the watch hands is regulated based on a reference quartz signal. Commercially released in 1999, the movement is found in watches distributed by the Seiko Watch Corporation, including its Credor, Grand Seiko, Presage, and Prospex brands. Mechanics The Spring Drive uses a conventional mainspring and barrel along with automatic and/or stem winding to store energy, just as in a mechanical watch. However, the escapement and balance wheel in mech ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Seiko Spacewalk
, commonly known as Seiko ( , ), is a Japanese maker of watches, clocks, electronic devices, semiconductors, jewelry, and optical products. Founded in 1881 by Kintarō Hattori in Tokyo, Seiko introduced one of the first quartz watches and the first quartz watch with a chronograph complication. Seiko was a wristwatch manufacturer for Japanese soldiers during World War II. History 1881 founding to 1929 In 1881, Seiko founder Kintarō Hattori opened a watch and jewelry shop called "K. Hattori" () in Tokyo. Kintarō Hattori had been working as clockmaker apprentice since the age of 13, with multiple stints in different watch shops, such as “Kobayashi Clock Shop”, ran by an expert technician named Seijiro Sakurai; “Kameda Clock Shop” in Nihonbashi; and “Sakata Clock Shop” in Ueno, where he learned how to both sell and repair timepieces. Around the time of Seiko's founding, watchmakers in Tokyo, Osaka, and Nagoya were studying and producing pocket watches based on Wes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Integrated Circuit
An integrated circuit or monolithic integrated circuit (also referred to as an IC, a chip, or a microchip) is a set of electronic circuits on one small flat piece (or "chip") of semiconductor material, usually silicon. Large numbers of tiny MOSFETs (metal–oxide–semiconductor field-effect transistors) integrate into a small chip. This results in circuits that are orders of magnitude smaller, faster, and less expensive than those constructed of discrete electronic components. The IC's mass production capability, reliability, and building-block approach to integrated circuit design has ensured the rapid adoption of standardized ICs in place of designs using discrete transistors. ICs are now used in virtually all electronic equipment and have revolutionized the world of electronics. Computers, mobile phones and other home appliances are now inextricable parts of the structure of modern societies, made possible by the small size and low cost of ICs such as modern computer ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Timekeeping Components
Time is the continued sequence of existence and events that occurs in an apparently irreversible succession from the past, through the present, into the future. It is a component quantity of various measurements used to sequence events, to compare the duration of events or the intervals between them, and to quantify rates of change of quantities in material reality or in the conscious experience. Time is often referred to as a fourth dimension, along with three spatial dimensions. Time has long been an important subject of study in religion, philosophy, and science, but defining it in a manner applicable to all fields without circularity has consistently eluded scholars. Nevertheless, diverse fields such as business, industry, sports, the sciences, and the performing arts all incorporate some notion of time into their respective measuring systems. 108 pages. Time in physics is operationally defined as "what a clock reads". The physical nature of time is add ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Watches
A watch is a portable timepiece intended to be carried or worn by a person. It is designed to keep a consistent movement despite the motions caused by the person's activities. A wristwatch is designed to be worn around the wrist, attached by a watch strap or other type of bracelet, including metal bands, leather straps or any other kind of bracelet. A pocket watch is designed for a person to carry in a pocket, often attached to a chain. Watches were developed in the 17th century from spring-powered clocks, which appeared as early as the 14th century. During most of its history the watch was a mechanical device, driven by clockwork, powered by winding a mainspring, and keeping time with an oscillating balance wheel. These are called ''mechanical watches''. In the 1960s the electronic ''quartz watch'' was invented, which was powered by a battery and kept time with a vibrating quartz crystal. By the 1980s the quartz watch had taken over most of the market from the mechani ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Caliber (horology)
In horology, a movement, also known as a caliber or calibre (British English), is the mechanism of a watch or timepiece, as opposed to the ''case'', which encloses and protects the movement, and the ''face'', which displays the time. The term originated with mechanical timepieces, whose clockwork movements are made of many moving parts. The movement of a digital watch is more commonly known as a module. In modern mass-produced clocks and watches, the same movement is often inserted into many different styles of case. When buying a quality pocketwatch from the mid-19th to the mid-20th century, for example, the customer would select a movement and case individually. Mechanical movements get dirty and the lubricants dry up, so they must periodically be disassembled, cleaned, and lubricated. One source recommends servicing intervals of: 3–5 years for watches, 15–20 years for grandfather clocks, 10–15 years for wall or mantel clocks, 15–20 years for anniversary clocks, and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Seiko Spring Drive 5R86 Parts
, commonly known as Seiko ( , ), is a Japanese maker of watches, clocks, electronic devices, semiconductors, jewelry, and optical products. Founded in 1881 by Kintarō Hattori in Tokyo, Seiko introduced one of the first quartz watches and the first quartz watch with a chronograph complication. Seiko was a wristwatch manufacturer for Japanese soldiers during World War II. History 1881 founding to 1929 In 1881, Seiko founder Kintarō Hattori opened a watch and jewelry shop called "K. Hattori" () in Tokyo. Kintarō Hattori had been working as clockmaker apprentice since the age of 13, with multiple stints in different watch shops, such as “Kobayashi Clock Shop”, ran by an expert technician named Seijiro Sakurai; “Kameda Clock Shop” in Nihonbashi; and “Sakata Clock Shop” in Ueno, where he learned how to both sell and repair timepieces. Around the time of Seiko's founding, watchmakers in Tokyo, Osaka, and Nagoya were studying and producing pocket watches based on Wes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Automatic Watch
An automatic watch, also known as a self-winding watch or simply an automatic, is a mechanical watch where the natural motion of the wearer provides energy to wind the mainspring, making manual winding unnecessary if worn enough. It is distinguished from a ''manual watch'' in that a manual watch must have its mainspring wound by hand at regular intervals. Operation In a mechanical watch the watch's gears are turned by a spiral spring called a mainspring. In a ''manual watch'' energy is stored in the mainspring by turning a knob, the ''crown'' on the side of the watch. Then the energy from the mainspring powers the watch movement until it runs down, requiring the spring to be wound again. A self-winding watch movement has a mechanism which winds the mainspring using the natural motions of the wearer's body. The watch contains an oscillating weight that turns on a pivot. The normal movements of the watch in the user's pocket (for a pocketwatch) or on the user's arm (for a wristwat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
BaselWorld
Baselworld Watch and Jewellery Show is a global trade show of the international watch, jewellery and gem industry, organized each spring in the city of Basel, Switzerland, at the Messeplatz. The last Baselworld was held March 21–26, 2019. In 2020 and 2021 the event was not held due to the COVID-19 pandemic, and the 2022 event has been cancelled as well. Baselworld is part of MCH Group, which organizes around 30 live marketing platforms in Switzerland and abroad, including Art Basel in Basel, Miami Beach and Hong Kong. History The show dates back to 1917 with the opening of the first ''Schweizer Mustermesse Basel'' (muba), of which a section was devoted to watches and jewellery. In 1925, muba invited several watch manufacturers to participate. In 1931, the ''Schweizer Uhrenmesse'' (Swiss Watch Show) was first held in a dedicated pavilion. After 1972's ''Europe's meeting place'' exhibition, companies from France, Italy, Germany, and the United Kingdom were also invited. In 1 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
India Today
''India Today'' is a weekly Indian English-language news magazine published by Living Media India Limited. It is the most widely circulated magazine in India, with a readership of close to 8 million. In 2014, ''India Today'' launched a new online opinion-orientated site called the ''DailyO''. History ''India Today'' was established in 1975 by Vidya Vilas Purie (owner of Thompson Press), with his daughter Madhu Trehan as its editor and his son Aroon Purie as its publisher.Bhandare, Namita"70's: The decade of innocence".''Hindustan Times''. Retrieved 29 July 2012. At present, ''India Today'' is also published in Hindi, Tamil, Malayalam and Telugu Telugu may refer to: * Telugu language, a major Dravidian language of India *Telugu people, an ethno-linguistic group of India * Telugu script, used to write the Telugu language ** Telugu (Unicode block), a block of Telugu characters in Unicode S .... The India Today news channel was launched on 22 May 2015. In October 2017, Aroon P ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Patent
A patent is a type of intellectual property that gives its owner the legal right to exclude others from making, using, or selling an invention for a limited period of time in exchange for publishing an enabling disclosure of the invention."A patent is not the grant of a right to make or use or sell. It does not, directly or indirectly, imply any such right. It grants only the right to exclude others. The supposition that a right to make is created by the patent grant is obviously inconsistent with the established distinctions between generic and specific patents, and with the well-known fact that a very considerable portion of the patents granted are in a field covered by a former relatively generic or basic patent, are tributary to such earlier patent, and cannot be practiced unless by license thereunder." – ''Herman v. Youngstown Car Mfg. Co.'', 191 F. 579, 584–85, 112 CCA 185 (6th Cir. 1911) In most countries, patent rights fall under private law and the patent holder mus ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Seikosha
was a branch of the Japanese company Seiko that produced clocks, watches, shutters, computer printers and other devices. It was the root of the manufacturing companies of the Seiko Group. History *1881 — Kintarō Hattori opens the watch and jewelry shop " K. Hattori" (''Hattori Tokeiten'' in Japanese; currently named Seiko Holdings Corporation) in the Ginza area of Tokyo, Japan. *1892 — is established in Tokyo as the clock manufacturing arm of K. Hattori. *1917 — K. Hattori becomes a company (K. Hattori & Co., Ltd.). *1937 — The watch production division of Seikosha is split off as . *1942 — Daiwa Kogyo, Ltd. is founded in Suwa, Nagano by Hisao Yamazaki. *1943 — Daini Seikosha establishes a factory in Suwa for manufacturing watches with Daiwa Kogyo. *1959 — Daiwa Kogyo and the Suwa Plant of Daini Seikosha merge to form *1961 — Shinshu Seiki Co., Ltd. is established as a subsidiary of Suwa Seikosha. *1970 — Seikosha is sp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Seiko Epson
Seiko Epson Corporation, or simply known as Epson, is a Japanese multinational electronics company and one of the world's largest manufacturers of computer printers and information- and imaging-related equipment. Headquartered in Suwa, Nagano, Japan, the company has numerous subsidiaries worldwide and manufactures inkjet, dot matrix, thermal printing, thermal and laser printers for consumer, business and industrial use, image scanner, scanners, laptop and desktop computers, video projectors, watches, point of sale systems, robots and industrial automation equipment, semiconductor devices, crystal oscillators, sensor, sensing systems and other associated electronic components. The company has developed as one of manufacturing and research & development companies (formerly known as Seikosha) of the former Seiko Group, a name traditionally known for manufacturing Seiko watch, timepieces since its founding. Seiko Epson was one of the major companies in the Seiko Group, but is neithe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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