CIRCULAR SAW Russian patent published in 2019 - IPC B27B33/08 

FIELD: wood-working industry.

SUBSTANCE: invention relates to wood-working industry. Circular saw contains a toothed ring collar, a drive bearing disc with a central hole having a thickness greater than the thickness of the saw, but smaller than the width of the cut. Ring gear ring is made with an inner diameter smaller than the outer diameter of the drive bearing disc by an amount that provides a connection in tension N exceeding the cutting force P_c in the ratio N>1.2P_c. On the edge of the disc bearing surface, there is a locking shoulder with an edge size a less than the broadening value on the gear ring side S'.

EFFECT: result is an increase in the stability and reliability of the circular saw when sawing.

1 cl, 3 dwg