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Barden Corporation
Barden Corporation is a ball bearing manufacturer based in Danbury, Connecticut, USA with factories in Danbury, Winsted, Connecticut and in Plymouth, England. It previously had factories in Bridgeport, Connecticut (Lacey Manufacturing-divested in 2008) and Haverhill, Massachusetts (Pope Spindle-divested in 2003). Barden specializes in the design, manufacture, repair and overhaul of aerospace and super precision ball bearings for safety-critical and harsh environment applications in a broad range of market sectors, from space to aerospace to subsea to high performance machine tools to medical and high performance automotive applications. History Barden was founded by Theodore Barth and Carl Norden (hence the name "Bar-den") in 1942 to make precision ball bearings for the Norden bombsight. The Norden bombsight required 61 precision miniature and instrument type bearings. Prior to the US entry into World War II, bombsight production levels were planned to be 800 per month; howev ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Privately Held Company
A privately held company (or simply a private company) is a company whose shares and related rights or obligations are not offered for public subscription or publicly negotiated in the respective listed markets, but rather the company's stock is offered, owned, traded, exchanged privately, or Over-the-counter (finance), over-the-counter. In the case of a closed corporation, there are a relatively small number of shareholders or company members. Related terms are closely-held corporation, unquoted company, and unlisted company. Though less visible than their public company, publicly traded counterparts, private companies have major importance in the world's economy. In 2008, the 441 list of largest private non-governmental companies by revenue, largest private companies in the United States accounted for ($1.8 trillion) in revenues and employed 6.2 million people, according to ''Forbes''. In 2005, using a substantially smaller pool size (22.7%) for comparison, the 339 companies on ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Optical Bombsights
Optics is the branch of physics that studies the behaviour and properties of light, including its interactions with matter and the construction of instruments that use or detect it. Optics usually describes the behaviour of visible, ultraviolet, and infrared light. Because light is an electromagnetic wave, other forms of electromagnetic radiation such as X-rays, microwaves, and radio waves exhibit similar properties. Most optical phenomena can be accounted for by using the classical electromagnetic description of light. Complete electromagnetic descriptions of light are, however, often difficult to apply in practice. Practical optics is usually done using simplified models. The most common of these, geometric optics, treats light as a collection of rays that travel in straight lines and bend when they pass through or reflect from surfaces. Physical optics is a more comprehensive model of light, which includes wave effects such as diffraction and interference that cannot be ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rolling-element Bearings
In mechanical engineering, a rolling-element bearing, also known as a rolling bearing, is a bearing which carries a load by placing rolling elements (such as balls or rollers) between two concentric, grooved rings called races. The relative motion of the races causes the rolling elements to roll with very little rolling resistance and with little sliding. One of the earliest and best-known rolling-element bearings are sets of logs laid on the ground with a large stone block on top. As the stone is pulled, the logs roll along the ground with little sliding friction. As each log comes out the back, it is moved to the front where the block then rolls on to it. It is possible to imitate such a bearing by placing several pens or pencils on a table and placing an item on top of them. See " bearings" for more on the historical development of bearings. A rolling element rotary bearing uses a shaft in a much larger hole, and cylinders called "rollers" tightly fill the space between t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aerospace Engineering Organizations
Aerospace is a term used to collectively refer to the atmosphere and outer space. Aerospace activity is very diverse, with a multitude of commercial, industrial and military applications. Aerospace engineering consists of aeronautics and astronautics. Aerospace organizations research, design, manufacture, operate, or maintain both aircraft and spacecraft. The beginning of space and the ending of the air is considered as 100 km (62 mi) above the ground according to the physical explanation that the air pressure is too low for a lifting body to generate meaningful lift force without exceeding orbital velocity. Overview In most industrial countries, the aerospace industry is a cooperation of the public and private sectors. For example, several states have a civilian space program funded by the government, such as National Aeronautics and Space Administration in the United States, European Space Agency in Europe, the Canadian Space Agency in Canada, Indian Space Resear ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Manufacturing Companies Based In Connecticut
Manufacturing is the creation or production of goods with the help of equipment, labor, machines, tools, and chemical or biological processing or formulation. It is the essence of secondary sector of the economy. The term may refer to a range of human activity, from handicraft to high-tech, but it is most commonly applied to industrial design, in which raw materials from the primary sector are transformed into finished goods on a large scale. Such goods may be sold to other manufacturers for the production of other more complex products (such as aircraft, household appliances, furniture, sports equipment or automobiles), or distributed via the tertiary industry to end users and consumers (usually through wholesalers, who in turn sell to retailers, who then sell them to individual customers). Manufacturing engineering is the field of engineering that designs and optimizes the manufacturing process, or the steps through which raw materials are transformed into a fina ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ball Screw
A ball screw (or ballscrew) is a mechanical linear actuator that translates rotational motion to linear motion with little friction. A threaded shaft provides a helical raceway for ball bearings which act as a precision screw. As well as being able to apply or withstand high thrust loads, they can do so with minimum internal friction. They are made to close tolerances and are therefore suitable for use in situations in which high precision is necessary. The ball assembly acts as the nut while the threaded shaft is the screw. In contrast to conventional leadscrews, ballscrews tend to be rather bulky, due to the need to have a mechanism to recirculate the balls. Another form of linear actuator based on a rotating rod is the threadless ballscrew, a.k.a. "rolling ring drive". In this design, three (or more) rolling-ring bearings are arranged symmetrically in a housing surrounding a smooth (threadless) actuator rod or shaft. The bearings are set at an angle to the rod, and this ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Schaeffler Gruppe
Schaeffler Technologies AG & Co. KG, also known as Schaeffler Group (''Schaeffler-Gruppe'' in German), is a German manufacturer of rolling element bearings for automotive, aerospace and industrial uses. It was founded in 1946 by brothers Dr. Wilhelm and Dr.-Ing. E. h. Georg Schaeffler. In August 2008, the firm agreed to a staggered €12 billion acquisition of larger rival Continental AG, whereby Schaeffler would defer taking a majority stake until at least 2012. However, in 2011 Schaeffler sold off €1.8 billion worth of shares of Continental, reducing its stake from 75.1% to 60.3%. Currently, the company owns 46% of Continental shares. Schaeffler Group also owns the brands INA, FAG and LuK. In Germany, the main brands of the Schaeffler Group – INA, FAG and LuK – are marketed by Schaeffler Technologies AG & Co. KG and LuK GmbH & Co. oHG. Schaeffler has an Indian subsidiarySchaeffler India which is publicly listed on the National Stock Exchange of India and the Bom ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Schweinfurt–Regensburg Mission
The Schweinfurt–Regensburg mission was a strategic bombing mission during World War II carried out by Boeing B-17 Flying Fortress heavy bombers of the U.S. Army Air Forces on August 17, 1943. The mission was an ambitious plan to cripple the German aircraft industry; it was also known as the "double-strike mission" because it entailed two large forces of bombers attacking separate targets in order to disperse fighter reaction by the Luftwaffe. It was also the first American "shuttle" mission, in which all or part of a mission landed at a different field and later bombed another target before returning to its base. After being postponed several times by unfavorable weather, the operation, known within the Eighth Air Force as "Mission No. 84", was flown on the anniversary of the first daylight raid by the Eighth Air Force. Mission No. 84 was a strike by 376 bombers of 16 bomb groups against German heavy industry well beyond the range of escorting fighters. The mission inflicte ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Barden Precision Bearings
Barden Corporation is a ball bearing manufacturer based in Danbury, Connecticut, USA with factories in Danbury, Winsted, Connecticut and in Plymouth, England. It previously had factories in Bridgeport, Connecticut (Lacey Manufacturing-divested in 2008) and Haverhill, Massachusetts (Pope Spindle-divested in 2003). Barden specializes in the design, manufacture, repair and overhaul of aerospace and super precision ball bearings for safety-critical and harsh environment applications in a broad range of market sectors, from space to aerospace to subsea to high performance machine tools to medical and high performance automotive applications. History Barden was founded by Theodore Barth and Carl Norden (hence the name "Bar-den") in 1942 to make precision ball bearings for the Norden bombsight. The Norden bombsight required 61 precision miniature and instrument type bearings. Prior to the US entry into World War II, bombsight production levels were planned to be 800 per month; h ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Friedrich Fischer Ball Grinding Machine 1883
Friedrich may refer to: Names *Friedrich (surname), people with the surname ''Friedrich'' *Friedrich (given name), people with the given name ''Friedrich'' Other *Friedrich (board game), a board game about Frederick the Great and the Seven Years' War * ''Friedrich'' (novel), a novel about anti-semitism written by Hans Peter Richter *Friedrich Air Conditioning, a company manufacturing air conditioning and purifying products *, a German cargo ship in service 1941-45 See also *Friedrichs (other) *Frederick (other) *Nikolaus Friedreich Nikolaus Friedreich (1 July 1825 in Würzburg – 6 July 1882 in Heidelberg) was a German pathologist and neurologist, and a third generation physician in the Friedreich family. His father was psychiatrist Johann Baptist Friedreich (1796–1862) ... {{disambig ja:フリードリヒ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
American Bearing Manufacturers Association
The American Bearing Manufacturers Association is an industry trade group that deals with all aspects of bearing technology. It was founded in 1917 as an informal group of manufacturers with the purpose of aiding bearing manufacturing during World War I. 1933 saw the ratification of Articles of Incorporation, by the then current members, as the Anti-Friction Bearing Manufacturers Association (AFBMA). In 1934 the AFBMA was incorporated as an organization in New York City. In 1993 the organization formally changed its title to the American Bearing Manufacturers Association in order to better serve its members and to expand membership eligibility.http://www.usitoday.com/FA_americanbearingsprofile.asp See also * ABEC scale - a tolerance classification developed by the ABMA's Annular Bearing Engineering Committee * Ball (bearing) Bearing balls are special highly spherical and smooth balls, most commonly used in ball bearings, but also used as components in things like freewheel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
