differential chain block

См. также в других словарях:

• differential chain block — noun or differential block : a chain operated differential pulley …   Useful english dictionary

• differential motion — noun : a mechanism (as a differential screw or a differential chain block) having two driving elements so arranged that the net motion of the follower is the difference between the two motions that it would have if either driver acted alone * * * …   Useful english dictionary

• differential block — noun see differential chain block …   Useful english dictionary

• Differential pulley — Figure 1  Differential pulley. A differential pulley, sometimes called a chain hoist, or sometimes colloquially called a chain fall, is used to manually lift very heavy objects like car engines. It is operated by pulling upon the slack… …   Wikipedia

• differential pulley — noun : a tackle consisting of a fixed upper double block with pulleys of different diameters fixed together on the same axis, a movable single lower pulley that carries the load, and an endless cable or chain that passes around all the pulleys… …   Useful english dictionary

• United States — a republic in the N Western Hemisphere comprising 48 conterminous states, the District of Columbia, and Alaska in North America, and Hawaii in the N Pacific. 267,954,767; conterminous United States, 3,022,387 sq. mi. (7,827,982 sq. km); with… …   Universalium

• List of Chinese inventions — A bronze Chinese crossbow mechanism with a buttplate (the wooden components have …   Wikipedia

• List of numerical analysis topics — This is a list of numerical analysis topics, by Wikipedia page. Contents 1 General 2 Error 3 Elementary and special functions 4 Numerical linear algebra …   Wikipedia

• Drive shaft — This article is about the mechanical device. For the fictional music group from the American television series Lost , see Charlie Pace. Not to be confused with Axle. Drive shaft with universal joints at each end and a spline in the centre A drive …   Wikipedia

• Life Sciences — ▪ 2009 Introduction Zoology       In 2008 several zoological studies provided new insights into how species life history traits (such as the timing of reproduction or the length of life of adult individuals) are derived in part as responses to… …   Universalium

• steel — steellike, adj. /steel/, n. 1. any of various modified forms of iron, artificially produced, having a carbon content less than that of pig iron and more than that of wrought iron, and having qualities of hardness, elasticity, and strength varying …   Universalium