Woodworking – Process – Mechanical cutting or shaping
Reexamination Certificate
2007-02-20
2007-02-20
Miller, Bena (Department: 3725)
Woodworking
Process
Mechanical cutting or shaping
C144S245200, C144S246100, C144S248500
Reexamination Certificate
active
10753083
ABSTRACT:
The invention relates to a process and an apparatus for producing veneer strips, chipped wood or the like, individual pieces of wood being joined together, with grains parallel, to form a group and then a multiplicity of such groups being arranged one behind the other, with grains parallel, to form a closely packed line, whereupon this line is then fed in its longitudinal direction, transverse to the wood-grain direction, to a chipping tool. In order, during the chipping operation, largely to prevent the accumulation of coarse chips, it is proposed according to the invention that the leading group conveyed up against the chipping tool is subjected, via the following group butting against it, to a longitudinal compressive force which acts in the longitudinal direction of the line, which exceeds the relative cutting force to which the leading group is subjected by the chipping tool, and which is largely absorbed by the leading group, which, by way of its advancement speed being braked, acts as an abutment.
REFERENCES:
patent: 3913643 (1975-10-01), Lambert
patent: 4222531 (1980-09-01), Thumm
patent: 5070918 (1991-12-01), Pallmann
patent: 5299610 (1994-04-01), Sentagnes et al.
patent: 5762122 (1998-06-01), Rice, Sr.
patent: 6035910 (2000-03-01), Schaefer
Holz und Kunststoff, “Spankultur”, pp. 49-52 (May 2001).
Thole et al., “The Density and Strength of Wood-Based Materials Require a Great Deal of Attention in the Production of Particles”, The Culture of Particles, (6 pgs).
DE-AS 1104676, ( 3 pgs) Apr. 1961.
Inter-Wood-Maschinen KG
Miller Bena
Whitham Curtis Christofferson & Cook PC
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