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John B. Gorrie (October 3, 1803 – June 29, 1855) was a Nevisian-born American physician and scientist, credited as the inventor of mechanical refrigeration. [1] [2]Born on the Island of Nevis in the Leeward Islands of the West Indies to Scottish parents on October 3, 1803, he spent his childhood in South Carolina.
The four alternating current generators are some of the most powerful rotating armature 3-phase machines ever built. Newly invented by Elihu Thomson, they weighed almost 30 tons each (57,887 pounds) and were 8.5-foot-tall (2.6 m). These original AC generators used many DC generator components in their first design.
U.S. patent 2,475,841 was issued on July 12, 1949 – Automatic refrigeration system for long-haul trucks. U.S. patent 2,475,842 was issued on July 12, 1949 – Starter generator. U.S. patent 2,475,843 was issued on July 12, 1949 – Means operated by a starter generator for cooling a gas engine.
Belgian engineer Floris Nollet invented (and patented) a practical AC generator. 1851: Heinrich Daniel Ruhmkorff developed the first coil, which he patented in 1851 1855: First utilization of AC (in electrotherapy) by French neurologist Guillaume Duchenne. 1856: Belgian engineer Charles Bourseul proposed telephony. 1856
The demonstration lighting system was driven by a hydroelectric generator that produced 500 volts AC, which was then stepped down to 100 volts to light incandescent bulbs in homes and businesses. That same year, Westinghouse founded the " Westinghouse Electric & Manufacturing Company "; [ 20 ] in 1889 he renamed it the "Westinghouse Electric ...
Founded by Robert Kern in 1959, the company soon began producing portable generators for Sears, Roebuck and Co. under the Craftsman brand. During the 1970s, Generac expanded its offerings in the portable and recreational vehicle markets, and in the 1980s the company entered the commercial and industrial markets with its backup power generation systems.
This is an accepted version of this page This is the latest accepted revision, reviewed on 2 March 2025. Classified advertisements website Craigslist Inc. Logo used since 1995 Screenshot of the main page on January 26, 2008 Type of business Private Type of site Classifieds, forums Available in English, French, German, Dutch, Spanish, Italian, Portuguese Founded 1995 ; 30 years ago (1995 ...
The three also invented the modern power distribution system: Instead of former series connection they connect transformers that supply the appliances in parallel to the main line. The first demonstrative long-distance (34 km, 21 mi) AC line was built for the 1884 International Exhibition of Turin, Italy.
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