IP Library › Granted Patent US 11,772,315
Granted Patent B1
US 11,772,315 · App. 16/993,465 · Granted Oct 3, 2023

Reinforced wood fiber core and method of making thereof

Inventor: Randolph A Dunn (Wilton, NH)
Assignee: Souhegan Wood Products Inc.
B29C48/0021B29C48/0022B29C48/09B29C63/18B65H75/10B29C2793/009B29C2793/0063B65H2401/10
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Quick Facts
Patent No.
US 11,772,315
App. No.
16/993,465
Granted
Oct 3, 2023
Kind
B1
Abstract

A winding core with improved beam and hoop strength and diminished friability and method for manufacturing such a core are provided, the method for making the winding core comprising: providing a wood fiber core, applying an adhesive to the wood fiber core, and sliding a tube or sheath onto the wood fiber core.

Claims (22)

1. A method for manufacturing a winding core, said method comprising:

Providing an extruded wood fiber core member having an external diameter;

applying an expanding adhesive to said extruded wood fiber core member;

sliding a pre-formed un-split sheath over said extruded wood fiber core member.

2. The method of claim 1 further comprising:

clamping said sheath to said extruded wood fiber core member and allowing said adhesive to cure.

3. The method of claim 1 further comprising:

cutting a longitudinal notch into said wood fiber core member and said sheath.

4. The method of claim 1 further comprising:

affixing end caps and plates to said wood fiber core member and said sheath.

5. The method of claim 4 further comprising:

applying a finish to the exterior surface of said sheath.

6. The method of claim 1 further comprising:

applying a finish to the exterior surface of said sheath.

7. The method of claim 1 wherein said wood fiber core has a square internal bore.

8. The method of claim 1 wherein said extruded wood fiber core has an internal bore having a circular cross section.

9. The method of claim 1 wherein said extruded wood fiber core has an internal bore having a squirkle cross section.

10. The method of claim 1 wherein said sheath is longitudinally uncut.

11. The method of claim 1 further comprising using a mechanical mechanism to force said sheath over said core member.

12. The method of claim 11 wherein said mechanical mechanism is a filament wrapped in a spiral configuration around said core.

13. The method of claim 11 wherein said mechanical mechanism is a ram.

14. The method of claim 11 wherein said mechanical mechanism is pressurized air disposed between said sheath and said core.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 17, 2020
From: DUNN, RANDOLPH A.
To: SOUHEGAN WOOD PRODUCTS INC.
Reel/Frame 053798/0316 →
Continuity (1)
Provisional Application 62886569 · Aug 14, 2019
Cited By (1)
US 12,370,731