| 摘要 |
FIELD: sports.SUBSTANCE: invention relates to medical equipment, gymnastics inventory and is designed, in particular, for training of fingers. A hand expander comprising a body and rings also comprises at least three rings connected to each other in series with elastic elements so that they make an integral whole. Rings are made of a springy material in the form of a wire, at the same time the middle of the body between the rings is bent. Besides, centres of rings stretch via a curve at a certain radius of curvature R, which is convenient for setting fingers.EFFECT: simplified design of the proposed expander.4 dwg |
