Apparatus and method for cutting or slotting rigid material, in particular wood

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 5146964
SERIAL NO

07787224

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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An apparatus and a method serve for cutting elongate pieces of wood having a modulus of elasticity between 50,000 and 400,000 kg/cm.sup.2. A circular saw blade is provided having a plurality of spaced peripheral teeth. The saw blade is rotated about an axis at a cutting speed exceeding 40 m/s. The pieces of wood are displaced relative to the saw blade along a feeding direction extending perpendicular to the saw blade axis of rotation. A stationary bending element is arranged on a broad side of the saw blade adjoining the cutting teeth. The bending element has a radially profiled surface with at thickness increasing towards the axis and decreasing towards the cutting teeth. The saw blade can be used to cut a slot into the pieces of wood along the feeding direction, thus generating a first and a second section of the pieces of wood. The bending element ensures that the first section is lifted from the saw blade immediately after the formation of the slot. A deflection element is arranged at a first distance from the bending element downstream along the feeding direction. The deflection element exerts a first force on a first surface of the first section facing away from the bending element. A supporting element is arranged at a second distance from the bending element downstream along the feeding direction with the second distance being smaller than the first distance. The supporting element exerts a second force on a second surface of the first section facing the bending element.

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Patent Owner(s)

Patent OwnerAddress
WURSTER U DIETZ GMBH U CO MASCHINENFABRIKD-72072 TÜBINGEN

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Dietz, Hans Ammerbuch, DE 13 63

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