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Dover Corporation
Dover Corporation is an American conglomerate manufacturer of industrial products. The Downers Grove, Illinois-based company was founded in 1955. As of 2021, Dover's business was divided into five segments: Engineered Products, Clean Energy and Fueling, Imaging & Identification, Pumps & Process Solutions and Climate and Sustainability Technologies. Dover is a constituent of the S&P 500 index and trades on the New York Stock Exchange under "DOV". Dover was ranked 433rd in the 2022 Fortune 500. The company relocated its headquarters to Illinois from New York in mid-2010. History Founding In the 1930s and 1940s, George Ohrstrom Sr., a New York City stockbroker, bought four manufacturing companies: C. Lee Cook Company (seals and piston rings), Rotary Lift (automotive lifts), C. Norris (oil-well pump-sucker rods), and Peerless (space heaters). Dover Corporation was incorporated in 1947, and in 1955 Ohrstrom brought in the former owner and president of C. Lee Cook Company, Fred D. Du ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Public Company
A public company is a company whose ownership is organized via shares of stock which are intended to be freely traded on a stock exchange or in over-the-counter markets. A public (publicly traded) company can be listed on a stock exchange (listed company), which facilitates the trade of shares, or not (unlisted public company). In some jurisdictions, public companies over a certain size must be listed on an exchange. In most cases, public companies are ''private'' enterprises in the ''private'' sector, and "public" emphasizes their reporting and trading on the public markets. Public companies are formed within the legal systems of particular states, and therefore have associations and formal designations which are distinct and separate in the polity in which they reside. In the United States, for example, a public company is usually a type of corporation (though a corporation need not be a public company), in the United Kingdom it is usually a public limited company (plc), i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sargent Industries
Electrada Corporation, later Sargent Industries, was an American company headquartered in Los Angeles, California, that existed from 1959 to 1984 and operated in the aerospace industry among others. The original Electrada included a mixture of businesses and soon faltered financially; it is most remembered as the corporate birthplace of the ancestor of MARK IV, one of the first, and most successful, packaged software products in the computing industry. After an acquisition in 1966, the company remade itself as Sargent Industries, a maker of parts used for control in aerospace and industrial applications. In this form the company was profitable and eventually was bought in 1984, becoming a subsidiary through several more changes of ownership. Electrada Corporation The Electrada Corporation was founded in 1959 as part of a popular trend regarding the benefits of conglomerates. The president of the company was Homer H. Rhoads. The new enterprise combined a variety of previously ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Conglomerates In The United States
A conglomerate is a combination of multiple business entities operating in entirely different industries under one corporate group, usually involving a parent company and many subsidiaries. Conglomerates are typically large and multinational. Africa Algeria * Cevital Kenya * KCB Bank Group * Centum Investments * Nation Media Group * Co-operative Bank Group * Equity Bank Group * I&M Bank Group * Olympia Capital Holdings * Sameer Group * TransCentury Limited Morocco * Siger * Société Nationale d'Investissement (SNI) Nigeria * Dangote Group * John Holt Plc * Transnational Corporation of Nigeria * United Africa Company of Nigeria South Africa *Bidvest Group *Vodacom * MTN * Cell C * Telkom *Eskom *Denel *Transnet *SABC *eNCA *DStv * Super Sports *Standard Bank * ABSA * FirstRand Limited *Nedbank * Capitec *Sasol *Naspers * Anglo American Platinum Ltd *Investec *Remgro *Old Mutual *Sanlam *Shoprite Holdings Uganda * Alam Group * Aya Group * BMK Group * DFCU G ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electrolux Professional
Electrolux Professional AB is a Swedish multinational professional appliance manufacturing company, headquartered in Stockholm. Originally formed as a division and later subsidiary of Electrolux, it was spun-off in March 2020. It produces a variety of major and small appliances intended for professional consumers, while Electrolux remains more focused toward home consumers. History In January 2018, Electrolux Professional acquired a German-Austrian supplier of laundry rental solutions for professional consumers. In October 2018, Electrolux Professional acquired SPM, an Italian manufacturer of frozen beverage equipment. In April 2019, Electrolux Professional acquired Unic, a French manufacturer of the espresso machines. In March 2020, Electrolux Professional has completed its spin-off from Electrolux. As a result, Electrolux Professional has been operated as an independent company and listed on Nasdaq Stockholm under the "EPRO" ticker symbol. In October 2021, Electrolux Pro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oscillation
Oscillation is the repetitive or periodic variation, typically in time, of some measure about a central value (often a point of equilibrium) or between two or more different states. Familiar examples of oscillation include a swinging pendulum and alternating current. Oscillations can be used in physics to approximate complex interactions, such as those between atoms. Oscillations occur not only in mechanical systems but also in dynamic systems in virtually every area of science: for example the beating of the human heart (for circulation), business cycles in economics, predator–prey population cycles in ecology, geothermal geysers in geology, vibration of strings in guitar and other string instruments, periodic firing of nerve cells in the brain, and the periodic swelling of Cepheid variable stars in astronomy. The term ''vibration'' is precisely used to describe a mechanical oscillation. Oscillation, especially rapid oscillation, may be an undesirable phenomenon in proc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Capacitor
A capacitor is a device that stores electrical energy in an electric field by virtue of accumulating electric charges on two close surfaces insulated from each other. It is a passive electronic component with two terminals. The effect of a capacitor is known as capacitance. While some capacitance exists between any two electrical conductors in proximity in a circuit, a capacitor is a component designed to add capacitance to a circuit. The capacitor was originally known as the condenser, a term still encountered in a few compound names, such as the ''condenser microphone''. The physical form and construction of practical capacitors vary widely and many types of capacitor are in common use. Most capacitors contain at least two electrical conductors often in the form of metallic plates or surfaces separated by a dielectric medium. A conductor may be a foil, thin film, sintered bead of metal, or an electrolyte. The nonconducting dielectric acts to increase the capacitor's c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Transducer
A transducer is a device that converts energy from one form to another. Usually a transducer converts a signal in one form of energy to a signal in another. Transducers are often employed at the boundaries of automation, measurement, and control systems, where electrical signals are converted to and from other physical quantities (energy, force, torque, light, motion, position, etc.). The process of converting one form of energy to another is known as transduction. Types * Mechanical transducers, so-called as they convert physical quantities into mechanical outputs or vice versa; * Electrical transducers however convert physical quantities into electrical outputs or signals. Examples of these are: ** a thermocouple that changes temperature differences into a small voltage; ** a linear variable differential transformer (LVDT), used to measure displacement (position) changes by means of electrical signals. Sensors, actuators and transceivers Transducers can be categorized by wh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Radio Receiver
In radio communications, a radio receiver, also known as a receiver, a wireless, or simply a radio, is an electronic device that receives radio waves and converts the information carried by them to a usable form. It is used with an antenna. The antenna intercepts radio waves (electromagnetic waves of radio frequency) and converts them to tiny alternating currents which are applied to the receiver, and the receiver extracts the desired information. The receiver uses electronic filters to separate the desired radio frequency signal from all the other signals picked up by the antenna, an electronic amplifier to increase the power of the signal for further processing, and finally recovers the desired information through demodulation. Radio receivers are essential components of all systems that use radio. The information produced by the receiver may be in the form of sound, video (television), or digital data. A radio receiver may be a separate piece of electronic equipment, or an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Speaker (electronics)
A loudspeaker (commonly referred to as a speaker or speaker driver) is an electroacoustic transducer that converts an electrical audio signal into a corresponding sound. A ''speaker system'', also often simply referred to as a "speaker" or "loudspeaker", comprises one or more such speaker ''drivers'', an enclosure, and electrical connections possibly including a crossover network. The speaker driver can be viewed as a linear motor attached to a diaphragm which couples that motor's movement to motion of air, that is, sound. An audio signal, typically from a microphone, recording, or radio broadcast, is amplified electronically to a power level capable of driving that motor in order to reproduce the sound corresponding to the original unamplified electronic signal. This is thus the opposite function to the microphone; indeed the ''dynamic speaker'' driver, by far the most common type, is a linear motor in the same basic configuration as the dynamic microphone which uses suc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Microphone
A microphone, colloquially called a mic or mike (), is a transducer that converts sound into an electrical signal. Microphones are used in many applications such as telephones, hearing aids, public address systems for concert halls and public events, motion picture production, live and recorded audio engineering, sound recording, two-way radios, megaphones, and radio and television broadcasting. They are also used in computers for recording voice, speech recognition, VoIP, and for other purposes such as ultrasonic sensors or knock sensors. Several types of microphone are used today, which employ different methods to convert the air pressure variations of a sound wave to an electrical signal. The most common are the dynamic microphone, which uses a coil of wire suspended in a magnetic field; the condenser microphone, which uses the vibrating diaphragm as a capacitor plate; and the contact microphone, which uses a crystal of piezoelectric material. Microphones typically n ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Microelectromechanical Systems
Microelectromechanical systems (MEMS), also written as micro-electro-mechanical systems (or microelectronic and microelectromechanical systems) and the related micromechatronics and microsystems constitute the technology of microscopic devices, particularly those with moving parts. They merge at the nanoscale into nanoelectromechanical systems (NEMS) and nanotechnology. MEMS are also referred to as micromachines in Japan and microsystem technology (MST) in Europe. MEMS are made up of components between 1 and 100 micrometers in size (i.e., 0.001 to 0.1 mm), and MEMS devices generally range in size from 20 micrometres to a millimetre (i.e., 0.02 to 1.0 mm), although components arranged in arrays (e.g., digital micromirror devices) can be more than 1000 mm2. They usually consist of a central unit that processes data (an integrated circuit chip such as microprocessor) and several components that interact with the surroundings (such as microsensors). Because of the la ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chicago
(''City in a Garden''); I Will , image_map = , map_caption = Interactive Map of Chicago , coordinates = , coordinates_footnotes = , subdivision_type = Country , subdivision_name = United States , subdivision_type1 = State , subdivision_type2 = Counties , subdivision_name1 = Illinois , subdivision_name2 = Cook and DuPage , established_title = Settled , established_date = , established_title2 = Incorporated (city) , established_date2 = , founder = Jean Baptiste Point du Sable , government_type = Mayor–council , governing_body = Chicago City Council , leader_title = Mayor , leader_name = Lori Lightfoot ( D) , leader_title1 = City Clerk , leader_name1 = Anna Valencia ( D) , unit_pref = Imperial , area_footnotes = , area_tot ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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