SPIROGRAPH Russian patent published in 2025 - IPC B43L9/00 B43L11/08 B43L13/00 

FIELD: light industry.

SUBSTANCE: invention relates to light industry and specifically to tools for drawing patterns and geometric figures, particularly a spirograph. Spirograph comprises at least one housing, made in the form of a frame, with an internal cutout, the internal periphery of which has teeth configured to engage with teeth made on the outer periphery of the toothed ring or disc, at least one toothed ring, the outer and inner periphery of which is made with teeth, and a disc with an outer periphery made with teeth. Teeth made on disk are made with possibility of engagement with teeth made on inner periphery of toothed ring. On the disc and/or on the toothed ring there are holes for a pen. At the edges of each front surface of the frame and at least one toothed ring there are at least three fixing elements, each of which protrudes into the inner periphery of the corresponding front surface of the frame or at least one toothed ring.

EFFECT: enabling fixation of toothed rings relative to the housing of the spirograph, as well as their fixation relative to each other when placed one into the other.

13 cl, 2 dwg