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Parker-Hannifin Corporation, originally Parker Appliance Company, usually referred to as just Parker, is an American corporation specializing in motion and control technologies. Its corporate headquarters are in Mayfield Heights, Ohio , in Greater Cleveland (with a Cleveland mailing address).
A coupling or coupler is a mechanism, typically located at each end of a rail vehicle, that connects them together to form a train. The equipment that connects the couplers to the vehicles is the draft gear or draw gear, which must absorb the stresses of the coupling and the acceleration of the train.
The Tokyo Metro 03 series (東京メトロ03系, Tōkyō Metoro 03-kei) was an electric multiple unit (EMU) train type operated by the Tokyo subway operator Tokyo Metro in Tokyo, Japan. A total of 42 eight-car trainsets were built, between 1988 and 1994, entering service on 1 July 1988 and the final sets were withdrawn by 8 February 2020.
In electronics, electric power and telecommunication, coupling is the transfer of electrical energy from one circuit to another, or between parts of a circuit. Coupling can be deliberate as part of the function of the circuit, or it may be undesirable, for instance due to coupling to stray fields .
The 3000 series was the first Keio rolling stock to use completely stainless steel body construction. [1] A total of 29 5-car sets (145 cars) were built from 1962 by Tokyu Car, and in 1963, the design was the recipient of the third Laurel Prize presented annually by the Japan Railfan Club.
The 3000 series trains were introduced into service on 19 October 2008, coinciding with the opening of the Keihan Nakanoshima Line. [6] It was initially used on most service patterns, but later was redeployed on limited express services. [2] The trains received the Laurel Prize in 2009. [2]
The first EMU3000 series train being loaded in the Port of Kudamatsu. The EMU3000 series was purchased as part of the Taiwan Railways Administration's (TRA) plan to replace its aging fleet by 2024. That plan called for the purchase of 600 intercity cars, 520 commuter cars (EMU900 series), 102 locomotives, and 60 un-electrified passenger cars. [4]
Principal view of the pumping action of a twin-screw pump with a six-lobe female screw and a five-lobe male screw. A compressor (as opposed to a pump) would be shaped the same way, except that the shape of the lobes would change along the length of the screw, so that the volume of the trapped pockets would get squeezed smaller as they get closer to the exhaust port.