Device Indicating the Loosening of a Nut
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United States of America Patent
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Issued Date -
Aug 8, 2019
app pub date -
Oct 9, 2017
filing date -
Oct 9, 2017
priority date (Note) -
Published
status (Latency Note)
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Abstract
A device (1) for indicating loosening of a rotary element (2) of a screw-and-nut system, this rotary element being intended to be screwed by a movement in rotation about a longitudinal direction (D), said rotary element comprising a portion of polygonal section in a plane normal to the longitudinal direction, said polygonal section portion defining a plurality of plane faces (21, 22, 23, 24, 25, 26), said indicator device comprising
- a body (3) intended to be mounted on the rotary element,a marking element (4) extending radially, fastened to the body to indicate the angular position of the rotary element, andat least one spring (31, 32, 33, 34, 35, 36) fastened to the body so that when the body is mounted on the polygonal section portion each spring exerts a radial bearing force on a corresponding plane face of the rotary element.
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