Torsion spring assembly, camshaft phaser and belt or chain tightener therewith
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United States of America Patent
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Sep 1, 2020
Grant Date -
Sep 12, 2019
app pub date -
May 26, 2017
filing date -
May 27, 2016
priority date (Note) -
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Abstract
A torsion spring assembly according to the invention includes a torsion spring having a cylindrical spring body of wound spring wire and with a plurality of torsion spring windings, and having first and second torsion spring ends for taking up forces in a direction of rotation, and a damping spring abutting the torsion spring on the inner side and having a cylindrical spring body of wound spring wire and with a plurality of damping spring windings, and having first and second damping spring wire ends, wherein the damping spring windings have their outer sides extending partially into the space formed between two respectively adjacent torsion spring windings and abutting in particular rounded, round or beveled inner abutment areas of respectively adjacent torsion spring windings with substantially radially outwardly directed bias.
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