| 摘要 |
A screw gear comprising a screw and two nuts, distinctive in that the nuts (2, 3) are connected with each other by means of an elastic part introduced axially in the form of a thin-walled sleeve (4) of high torsional rigidity and longitudinal cuts (5) made on its surface, perpendicular to the sleeve axis; all neighbouring cuts are shifted apart from each other.<IMAGE>
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