TYRE CUTTING KNIFE Russian patent published in 2006 - IPC B29B17/02 

FIELD: recycling of worn-out and reject tyres.

SUBSTANCE: proposed knife for cutting tire into pieces contains two blades made in form of coaxially arranged cylindrical shells of different diameter. Larger diameter blade has diameter equal to 0.98-0.99 of inner diameter of tire tread band. Smaller diameter blade has diameter of 1.1 - 1.15 of larger diameter of bead rings of tire to be cut. Cutting edge of larger diameter blade is made on surface of blade having larger diameter. Cutting edge of smaller diameter blade in made on smaller diameter surface of blade. Knife permits cutting of tyres, both with textile or metal cord and cutting of two more tyres simultaneously when tyres are fitted on pole.

EFFECT: enlarged operating capabilities.

3 dwg