SAFETY COUPLING Russian patent published in 2017 - IPC F16D7/00 F16D43/18 F16D43/22 

FIELD: machine building.

SUBSTANCE: invention relates to machine building, and more exactly to the safety couplings. The safety coupling comprises a drive and driven shafts installed with possibility of rotation on axle between them. Springs are fit installed on the axle, and secured by one end on shafts. During the shaft (1) rotation towards one direction the spring (4) turns will entrain the axle (3) with pressed on spring (5) rotating the driven shaft (2). Upon the design moment exceeding on the shaft (2) the axle (3) starts rotation in spring (5). If spring material has coefficient of expansion larger then axle (3) material, then due to heat generated during friction the spring tensioning will decrease thus decreasing wear of the friction surfaces. During the shaft (1) rotation to another direction when shaft (2) moment exceeds the permissible, the spring (4) will rotate on the axle (3), the axle due to rotation in said direction will be held by tensioned spring (5).

EFFECT: simplification of the design.

6 cl, 1 dwg