SPHERICAL COMPRESSION SPRING Russian patent published in 2015 - IPC F16F1/34 

FIELD: machine building.

SUBSTANCE: spring contains X-shape element comprising two similar rings with rectangular cross-section. In each ring a radial cutout is made with width equal to the ring height at side opposite to the cutout. At edges of the radial cutout of each ring the all-round material removal is made along surface of the cylindrical helical spiral coaxial with ring with internal and outside diameters equal to ring diameters, and with spacing equal to double height of the ring by similar depth relatively to the ring surface.

EFFECT: reduced height in compressed state, increased work stroke, and reduced weigh and size.

2 cl, 2 dwg