Working tool and machine for sawing and cutting

Details Working tool and machine for sawing and cutting Working tool and machine for sawing and cutting

2006-10-30

2010-06-22

Eley, Timothy V (Department: 3724)

Stone working

Sawing

Rotary

C030S276000, C030S389000

Reexamination Certificate

active

07740012

ABSTRACT:
Working tool and machine for sawing or cutting, comprising an annular blade (2) intended to be rotated about an axis of rotation, encircling the axis of rotation, the annular blade comprising an annular blank (3; 3′) and means (15), e.g. diamond segments (15), forming the working part of the tool and provided in connection to an outer edge (31) of the blank (3; 3′), the blade and blank also having an inner edge (19), an inner edge portion (18) comprising driving surfaces for rotation of the tool about the axis of rotation, and a web portion (23) between the outer edge (31) of the blank and the inner edge (portion) (18), the web portion having a first side (24) and a second side (27). At least two substantially circular guide grooves (21,22; 21′, 22′) are provided in the web portion on its first side, the guide grooves including an inner groove (21; 21′), which is the guide groove that is nearest the inner edge, and an outer groove (22; 22′) which is the guide groove that is nearest the outer edge, the guide grooves being concentric with respect to the axis of rotation, and each guide groove having an inner wall (34, 35; 34′, 35′) on its inner side which faces the inner edge (19) of the blade.

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patent: 4646607 (1987-03-01), Johansson
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patent: 6336273 (2002-01-01), Nilsson et al.
patent: 6374501 (2002-04-01), Claesson
patent: 83163 (1919-11-01), None

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