The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 26, 2002
Filed:
Dec. 28, 2000
Arvo Jonkka, Pori, FI;
Metso Woodhandling Oy, Pori, FI;
Abstract
A wood chipping method and a disc chipper provided with knives ( ). The chips ( ), after having separated from a log ( ), pass through a chip opening ( ) in the disc ( ) and hit an impact surface ( ) located after a knife. Along different portions of the knife ( ), a stronger impact effect is caused in proximity to the centre than in proximity to the outer periphery of the disc. The direction of the impact surface ( ) deviates more from the direction of the rear surface ( ) of the knife in proximity to the centre of the disc than in proximity to the outer periphery of the disc. The distance of the connecting line between the rear surface ( ) of the knife and the impact surface ( ) from the cutting edge ( ) of the knife can be longer on the outer periphery of the disc than in the centre of the disc.