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US 4,283,819 AGranted
Segment-shaped blade
AssigneeMiba Sintermetall Aktiengesellschaft
InventorKarl Willinger
Life of this patent
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AssigneeMiba Sintermetall Aktiengesellschaft
InventorKarl Willinger
Estimating the term…
A segment-shaped blade is provided for use in a rotatable cylindrical tool for machining elastic material, particularly pneumatic rubber tires for vehicles. The blade comprises teeth defined at the convex periphery by approximately V-shaped or circular or oval cuts. Said teeth include one or more triangular teeth and one or more trapezoidal teeth, which precede said triangular teeth in the direction of rotation of the tool and have prongs that are directed toward each other and are bent to different sides out of the plane of the blade. The triangular tooth or teeth are divided by one or more radial cuts into two or more triangular teeth, the prongs of which are bent to different sides out of the plane of the blade. The trapezoidal teeth have preferably legs of equal length. The two prongs of a trapezoidal tooth which are directed toward each other are defined in known manner by a punched circular hole, which is symmetrical to the periphery of the tooth. The two outer edges of the tooth which adjoin the prongs are straight and tangential to the punched hole.
A segment-shaped blade for use in a cylindrical tool for machining elastic material by rotating the tool in a direction of rotation, the blade extending in a plane and having a convex periphery, which comprises a plurality of trapezoidal teeth arranged along the periphery between substantially V-shaped peripheral recesses defining the height of the teeth, each trapezoidal tooth having a radial plane of symmetry and defining a circular hole whose center lies in the plane of symmetry, and each trapezoidal tooth including two prongs bent to different sides of the plane of the blade, each prong extending between the circular hole and an adjacent one of the peripheral recesses and having a straight outer edge tangential to the circular hole and perpendicular to the plane of symmetry.
Dependencies are inferred from the claim text.