公开(公告)号：CA2415303C

公开(公告)日：2009-01-27

申请号：CA2415303

申请日：2001-07-13

Applicant: IGGESUND TOOLS AB

Inventor： BILLER SVEN-OLOF ,  ENGNELL MATS ,  GRANSTROM OLOV

IPC: B27L11/00

Abstract: The invention relates to a chipper knife for chippers of the type comprising a tool (12) which is rotatable on an axis of rotation and is in the form of, f or example a drum, disc or truncated conical body, which supports a plurality o f such chipper knives. The chipper knife comprises at least one cutting edge ( 1) which is formed between a flank (2, 2') and a chip guiding surface (4, 4'), and two opposite main surfaces (3, 3') which are adapted to abut against and be retained on the opposite seats (14, 15) of a holder (9, 10) on the tool. At least one main surface (3, 3') of the chipper knife which is located on a wo od side of the chipper knife comprises a cross-sectionally convexly bent surfac e portion (6, 5') which connects to and extends backwards from the flank (2, 2 ') and the chord of which constitutes at least 20 %, preferably at least 30 % and, most preferably, at least 40 % of the total cross-sectional length of t he chipper knife. The invention also relates to a holder for such a chipper kni fe.

公开(公告)号：AU7120501A

公开(公告)日：2002-01-30

申请号：AU7120501

申请日：2001-07-13

Applicant: IGGESUND TOOLS AB

Inventor： BILLER SVEN-OLOF ,  GRANSTROM OLOV ,  ENGNELL MATS

IPC: B27L11/00

Abstract: The invention relates to a chipper knife for chippers of the type comprising a tool ( 12 ) which is rotatable on an axis of rotation and is in the form of, for example a drum, disc or truncated conical body, which supports a plurality of such chipper knives. The chipper knife comprises at least one cutting edge ( 1 ) which is formed between a flank ( 2, 2 ') and a chip guiding surface ( 4, 4 '), and two opposite main surfaces ( 3, 3 ') which are adapted to abut against and be retained on the opposite seats ( 14, 15 ) of a holder ( 9, 10 ) on the tool. At least one main surface ( 3, 3 ') of the chipper knife which is located on a wood side of the chipper knife comprises a cross-sectionally convexly bent surface portion ( 6, 5 ') which connects to and extends backwards from the flank ( 2, 2 ') and the chord of which constitutes at least 20%, preferably at least 30% and, most preferably, at least 40% of the total cross-sectional length of the chipper knife. The invention also relates to a holder for such a chipper knife.

公开(公告)号：CA2415303A1

公开(公告)日：2002-01-24

申请号：CA2415303

申请日：2001-07-13

Applicant: IGGESUND TOOLS AB

Inventor： GRANSTROM OLOV ,  ENGNELL MATS ,  BILLER SVEN-OLOF

IPC: B27L11/00

Abstract: The invention relates to a chipper knife for chippers of the type comprising a tool (12) which is rotatable on an axis of rotation and is in the form of, f or example a drum, disc or truncated conical body, which supports a plurality o f such chipper knives. The chipper knife comprises at least one cutting edge ( 1) which is formed between a flank (2, 2') and a chip guiding surface (4, 4'), and two opposite main surfaces (3, 3') which are adapted to abut against and be retained on the opposite seats (14, 15) of a holder (9, 10) on the tool. At least one main surface (3, 3') of the chipper knife which is located on a wo od side of the chipper knife comprises a cross-sectionally convexly bent surfac e portion (6, 5') which connects to and extends backwards from the flank (2, 2 ') and the chord of which constitutes at least 20 %, preferably at least 30 % and, most preferably, at least 40 % of the total cross-sectional length of t he chipper knife. The invention also relates to a holder for such a chipper kni fe.