linkage


linkage
/ling"kij/, n.
1. the act of linking; state or manner of being linked.
2. a system of links.
3. Genetics. an association between two or more genes on a chromosome that tends to cause the characteristics determined by these genes to be inherited as an inseparable unit.
4. Mach. an assembly of four or more rods for transmitting motion, usually in the same plane or in parallel planes.
5. a factor or relationship that connects or ties one thing to another; link: Administration officials sought to establish linkage between grain sales and relaxed immigration laws.
6. any of various mathematical or drawing devices consisting of a combination of bars or pieces pivoted together so as to turn about one another, usually in parallel planes.
7. Elect. See flux linkage.
[1870-75; LINK1 + -AGE]

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In mechanical engineering, a system of solid, usually metallic, links (bars) connected to two or more other links by pin joints (hinges), sliding joints, or ball-and-socket joints to form a closed chain or a series of closed chains.

When one link is fixed, the possible movements of the other links relative to the fixed link and to one another depend on the number of links and the number and types of joints. With four pin-connected links, for example, the links all move in parallel planes, and regardless of which link is fixed, the others move in a fixed way relative to the fixed link. With various relative lengths of the links, this four-bar linkage becomes a useful mechanism for converting uniform rotary to non-uniform rotary motion or continuous rotary to oscillatory motion. It is the most commonly used linkage mechanism in machine construction.

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▪ machine component
      in mechanical engineering, a system of solid, usually metallic, links (bars) connected to two or more other links by pin joints (hinges), sliding joints, or ball-and-socket joints so as to form a closed chain or a series of closed chains. When one of the links is fixed, the possible movements of the other links relative to the fixed link and to one another will depend on the number of links and the number and types of joints. With four pin-connected links, for example, the links all move in parallel planes, and regardless of which link is fixed, the other links have constrained motion; i.e., they move in a fixed and determinate way relative to the fixed link. By varying the relative lengths of the links, this four-bar linkage becomes a useful mechanism for converting uniform rotary to non-uniform rotary motion or continuous rotary to oscillatory motion; it is the most commonly used linkage mechanism in machine construction.

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Universalium. 2010.

Look at other dictionaries:

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  • Linkage — Link age (l[i^][ng]k [asl]j; 48), n. 1. The act of linking; the state of being linked; also, a system of links. [1913 Webster] 2. (Chem.) Manner of linking or of being linked; said of the union of atoms or radicals in the molecule. [1913 Webster] …   The Collaborative International Dictionary of English

  • linkage — LINKÁGE CAJ/ s. n. (biol.) înlănţuire (strânsă) a genelor care se găsesc în acelaşi cromozom. (< engl. linkage) Trimis de raduborza, 15.09.2007. Sursa: MDN …   Dicționar Român

  • linkage — 1874, from LINK (Cf. link) (v.) + AGE (Cf. age). To understand the principle of Peaucellier s link work, it is convenient to consider previously certain properties of a linkage, (to coin a new and useful word of general application), consisting… …   Etymology dictionary

  • linkage — [liŋk′ij] n. 1. a linking or being linked 2. a series or system of links, slides, cranks, wheels, or gears for transmitting power or motion 3. Biol. the tendency of some genes to remain together and act as a unit (linkage group) in inheritance,… …   English World dictionary

  • linkage — linkage. См. сцепление. (Источник: «Англо русский толковый словарь генетических терминов». Арефьев В.А., Лисовенко Л.А., Москва: Изд во ВНИРО, 1995 г.) …   Молекулярная биология и генетика. Толковый словарь.

  • linkage — I noun affiliation, affinity, alliance, association, bond, coalescence, combination, concatenation, confluence, conjugation, conjunction, connection, coupling, hookup, interconnection, intersection, joinder, joining, junction, juncture, linking,… …   Law dictionary

  • linkage — /ˈlinkadʒ, ingl. ˈlɪŋkɪdʒ/ [vc. ingl., propriamente «concatenazione», da link «anello d una catena»] s. m. inv. (biol.) associazione …   Sinonimi e Contrari. Terza edizione


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