Patent CA1097193A successfully refreshed from Google Patents.
CA1097193A
Expired / Lapsed
CA
⏱️ 0.0 years remaining
Method and apparatus for manufacturing reinforced wood product
Assignee: Individual
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Filing: 1976-11-09
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Granted: 1981-03-10
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Expires: 1996-11-09
Abstract
Abstract ABSTRACT OF THE DISCLOSURE This invention is directed to a method of extruding from uncured debarked or unpeeled logs a plurality of wood strips which can be subsequently pressed and glued together to form a laminated wood product. The method of extruding the uncured unpeeled logs into a plurality of wood strips comprises extruding an uncured log in a direction along the grain of the log through a parallelogram -shaped and preferably rectangular grid of intersecting cutting blades which form a series of correspondingly parallelogram-shaped apertures at a pressure sufficient to force the uncured log through the apertures, thereby extruding the log into a plurality of wood strips of generally parallelogram-shaped cross section. The apparatus for extruding the logs into a plurality of wood strips comprises an elongated frame, an end plate positioned at one end of the elongated frame, at least one hydraulic ram which is located at the end of the frame opposite the end plate and extends parallel with the elongated frame in the direction of the end plate, and a parallelogram-shaped grid of intersecting cutting blades secured to the end of the hydraulic ram that extends in the direction of the end plate.
Inventors
- 👤 Ewan R. Orr
Bibliographic Details
Application Number
—
Jurisdiction
CA
Data Source
google_patents
Last Synchronized
2026-11-08 16:23
CPC Classifications
B; B27; B27M; B27M3/00; B27M3/0013; B27M3/0026; B27M3/0053; B27L; B27L7/00; B27L7/06; B27M1/00
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
69 words
A method of extruding logs into a plurality of wood strips comprising extruding an uncured peeled log in a direction along the grain of the log through a reinforced parallelogram-shaped grid of intersecting cutting blades which form a series of parallelogram-shaped apertures at a high pressure sufficient to force the log through the apertures, thereby extruding the log into a plurality of wood strips of generally parallelogram-shaped cross section.
Claim 2
Independent Claim
69 words
A method of extruding logs into a plurality of wood strips comprising extruding an uncured peeled log in a direction along the grain of the log through a reinforced parallelogram-shaped grid of intersecting cutting blades which form a series of parallelogram-shaped apertures at a high pressure sufficient to force the log through the apertures, thereby extruding the log into a plurality of wood strips of generally parallelogram-shaped cross section.
Claim 3
Dependent Claim
19 words
The method of claim 1 wherein the apertures formed by the intersecting cutting blades are of rectangular cross section.
Claim 4
Dependent Claim
19 words
The method of claim 1 wherein the apertures formed by the intersecting cutting blades are of square cross section.
Claim 5
Dependent Claim
19 words
The method of claim 1, 2, or 3 wherein the leading cutting edges of the cutting blades are non-linear.
Claim 6
Dependent Claim
20 words
The method of claim 1, 2 or 3 wherein the cutting blades are reinforced by primary and secondary support grids.
Claim 7
Dependent Claim
38 words
The method of claim 1, 2 or 3 wherein the log is extruded through the grid of intersecting cutting blades by means of one or more hydraulic rams which force the blades through the length of the log.
Claim 8
Dependent Claim
24 words
A method of claim 1, 2 or 3 wherein the incured log has a relatively low sap content. - page 1 of claims -
Claim 9
Dependent Claim
43 words
The method of claim 1, 2 or 3 wherein the wood strips emerging from the apertures are firmly gripped and pulled away from the apertures with a force that is approximately equal to the pressure used to force the log through the apertures.
Claim 10
Dependent Claim
40 words
The method of claim 2 further comprising the following steps of reducing the moisture content of the wood strips to below about 12%; applying glue to the wood strips; and pressing the wood strips together to form a wood module.
Claim 11
Dependent Claim
20 words
The method of claim 9 wherein the glue is selected from the group consisting of epoxy, urea formaldehyde and phenolformaldehyde.
Claim 12
Dependent Claim
34 words
The method of claim 9 wherein the moisture content of the wood strips is reduced to below about 12% by kiln drying said strips at a temperature of about 200°F for about two hours.
Claim 13
Dependent Claim
21 words
The method of claim 9 wherein said wood strips or said wood modules are bonded together to form laminated wood products.
Claim 14
Independent Claim
93 words
An apparatus for extruding peeled logs into a plurality of wood strips comprising: (a) an elongated frame, (b) an end plate positioned at one end of the elongated frame, - page 2 of claims -(c) at least one hydraulic ram which is located at the end of the frame opposite the end plate and extends parallel with the elongated frame in the direction of the end plate, (d) a reinforced parallelogram-shaped grid of intersecting cutting blades secured to the end of the hydraulic ram that extends in the direction of the end plate.
Claim 15
Dependent Claim
10 words
The apparatus of claim 13, wherein the grid is rectangular.
Claim 16
Dependent Claim
38 words
The apparatus of claim 13 wherein the frame includes at least two parallel tracks that extend in the direction of and meet with the end plate, and the grid of intersecting cutting blades travels on the two tracks.
Claim 17
Dependent Claim
23 words
The apparatus of claim 14 wherein the intersecting blades of the grid are positioned to form square cross section apertures between the blades.
Claim 18
Dependent Claim
15 words
The apparatus of claim 16 wherein the cutting edges of the intersecting blades are non-linear.
Claim 19
Dependent Claim
29 words
The apparatus of claim 14 wherein the grid is reinforced by primary and secondary support grids positioned on the side of the cutting grid removed from the end plate.
Claim 20
Dependent Claim
37 words
The apparatus fo claim 18 wherein the primary and secondary support grids have a plurality of intersecting vertical and horizontal supports which align with the intersecting blades of the cutting grid. - page 3 of claims -
Claim 21
Dependent Claim
65 words
The apparatus of claim 19 wherein the primary support grid has a fewer number of vertical and horizontal supports than the respective number of vertical and horizontal blades of the cutting grid, and the secondary support grid has a fewer number of vertical and horizontal supports than a respective number of vertical and horizontal blades of the primary support grid. - page 4 of claims-
References Cited (Backward Citations)
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