US4146662A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Warp and weather resistant solid core wood door and method of making
Assignee: Jeld Wen Inc
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Filing: 1978-01-30
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Granted: 1979-03-27
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Expires: 1998-01-30
Abstract
Abstract A specially constructed solid core door is disclosed having a solid core material of particleboard or other suitable material, wood stiles bonded around the periphery of the edges of the core material, a hardwood skin having a minimum thickness of 1/8 inch bonded to the front and rear surfaces of the core material and a phenolic resin-impregnated paper overlay overlying and bonded to the exposed faces and backs of each of the hardwood veneers. The exposed face of the resin-impregnated paper is preferably deeply embossed during bonding of the paper to the veneer with a texture such as a wood grain texture. The door has twice the warp resistance of standard wood doors. The resin impregnated overlayed surfaces provide excellent dent resistance, easy repairability, resistance to checking or crazing, and long paint life (approximately 2 to 3 times that of the standard wood faced door).
Inventors
- 👤 Philip R. Eggers
- 👤 Elwood K. Madsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:39
CPC Classifications
B; B32; B32B; B32B21/00; B32B21/04; B32B21/06; B32B21/02; E; E06; E06B; E06B3/00; E06B3/70; E06B3/82; E06B3/822; E06B3/825; B32B2307/00; B32B2307/70; B32B2307/712; B32B2317/00; B32B2317/12; B32B2317/125; B32B2419/00; E06B2003/7049; E06B2003/7051; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1039; Y10T156/1041; Y10T428/00; Y10T428/23; Y10T428/24; Y10T428/24628; Y10T428/24736; Y10T428/31504; Y10T428/31942; Y10T428/31949; Y10T428/31957; Y10T428/31971; Y10T428/31975; Y10T428/31978; Y10T428/31982
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
90 words
A weather and warp-resistant decorative solid core wood door comprising: a rectangular solid core material having exposed front and rear faces, wooden stiles framing the sides of the core material, and top and bottom rails framing the top and bottom edges of the core material, hardwood plywood veneer skins whose front and rear surfaces are each bonded to phenolic resin-impregnated paper overlays under heat and pressure, the overlayed veneer skins adhesively bonded to the exposed front and rear faces of the core material and over the wooden stiles and rails.
Claim 2
Dependent Claim
90 words
A weather and warp-resistant decorative solid core wood door comprising: a rectangular solid core material having exposed front and rear faces, wooden stiles framing the sides of the core material, and top and bottom rails framing the top and bottom edges of the core material, hardwood plywood veneer skins whose front and rear surfaces are each bonded to phenolic resin-impregnated paper overlays under heat and pressure, the overlayed veneer skins adhesively bonded to the exposed front and rear faces of the core material and over the wooden stiles and rails.
Claim 3
Dependent Claim
23 words
The solid core wood door of claim 1 wherein the core material is particleboard having a minimum density of 28 pounds/ft. 3 .
Claim 4
Dependent Claim
46 words
The solid core wood door of claim 1 wherein the exposed surface of each of the phenolic resin-impregnated overlay veneer skins bonded to the core material are deeply embossed during bonding of the resin-impregnated overlay paper to the veneer skin to provide a textured design thereon.
Claim 5
Independent Claim
112 words
A method of making a weather and warp resistance decorative solid core wood door comprising: providing a hardwood plywood veneer skin, having exposed front and rear surfaces, providing an uncured phenolic resin impregnated, cellulosic paper overlay coated on one surface thereof with an uncured phenolic adhesive resin, bonding the adhesive coated surface of the phenolic resin-impregnated paper to the exposed front and rear faces of the hardwood veneer skin under heat and pressure sufficient to cure the adhesive coating and the phenolic resin impregnated into the paper overlay, and bonding the hardwood veneer/phenolic resin-impregnated paper overlay laminate to the exposed front and rear faces of a core material framed with wooden stiles.
Claim 6
Independent Claim
112 words
A method of making a weather and warp resistance decorative solid core wood door comprising: providing a hardwood plywood veneer skin, having exposed front and rear surfaces, providing an uncured phenolic resin impregnated, cellulosic paper overlay coated on one surface thereof with an uncured phenolic adhesive resin, bonding the adhesive coated surface of the phenolic resin-impregnated paper to the exposed front and rear faces of the hardwood veneer skin under heat and pressure sufficient to cure the adhesive coating and the phenolic resin impregnated into the paper overlay, and bonding the hardwood veneer/phenolic resin-impregnated paper overlay laminate to the exposed front and rear faces of a core material framed with wooden stiles.
Claim 7
Dependent Claim
37 words
The method of claim 4, including deeply embossing the exposed face of the resin-impregnated paper overlay during bonding of the paper overlay to the hardwood veneer skin to provide a decorative surface which is stainable and/or paintable.
Claim 8
Dependent Claim
32 words
The solid core wood door of claim 1 wherein the stiles have a minimum width of two and one-quarter inches and the rails have a minimum width of two and one-half inches.
References Cited (Backward Citations)
US3738900A
Cited
US3994110A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-03-26 | 1982-09-25 | 1983-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-03-26 | 1986-09-25 | 1987-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-03-26 | 1990-09-25 | 1991-03-27 | $7700.00 | Window Closed / Lapsed |