Device and method for stretching a transmission chain
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United States of America Patent
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Issued Date -
Mar 6, 2008
app pub date -
Aug 29, 2007
filing date -
Aug 30, 2006
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
The invention provides a device for stretching a transmission chain which is closed in itself and is made up from a number of adjacent links which are, in the longitudinal direction of the chain, mutually intercoupled by pairs of longitudinal rocker elements and in which the ends of at least one rocker element operate torque transmittingly with the pulley sheaves of a 5 pulley sheave transmission, said device comprising at least two supporting surfaces lying at a distance of each other and supporting the chain according to an arc, and provided with means to generate in this chain a tensile force leading to a surpassing of the limit of elasticity of the link material. To improve the stretching and more particularly to prevent an uncontrolled bending of 10 the rocker elements during the treatment of the chain with all drawbacks thereof the invention proposes that at least one of the supporting surfaces is configured to support the radial inner area of at least a part of the chain. Thus bending of the rocker elements is prevented and the treatment of the chain is improved considerable.
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