Patent US3887415A successfully refreshed from Google Patents.
US3887415A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Panel with decorative bark surface and method of making the same
Assignee: Elmendorf Research Inc
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Filing: 1973-05-16
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Granted: 1975-06-03
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Expires: 1993-05-16
Abstract
Abstract A panel formed from a substrate such as a ligno-cellulosic board including insulation board, softwood plywood and particle board, and a protective surface for the substrate comprised of bark chips. The surface is harder than the natural, weathered bark of trees and imparts a mottled and textured surface to the substrate so that the resulting panel has superior decorative values. The method includes placing flakes and chips of bark on an adhesive coating on the face of the substrate, applying pressure to the bark to form a relatively flat surface, then abrading such surface to remove the phloem and excess chips and to relieftexture the surface.
Inventors
- 👤 Armin Elmendorf
- 👤 Roland Etzold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:53
CPC Classifications
B; B44; B44C; B44C5/00; B44C5/04; B44C5/043; B32; B32B; B32B7/00; B32B7/04; B32B7/12; B32B21/00; B32B21/02; B44C5/0461; B44C5/0469; B44F; B44F9/00; B44F9/02; B32B2262/00; B32B2262/06; B32B2262/062; B32B2262/065; B32B2305/00; B32B2305/30; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052; Y10T156/1062; Y10T156/1075; Y10T156/1089; Y10T156/109; Y10T428/00; Y10T428/24; Y10T428/24355; Y10T428/24438; Y10T428/25; Y10T428/253
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
61 words
A method of producing a panel having decorative bark facing which comprises the following steps: placing bark flakes and chips on an adhesive-coated ligno-cellulosic substrate in a single layer; and applying pressure and compressing the flakes until pressure is exerted onto most of both the flakes and the chips and until both are bonded to the substrate in a single layer.
Claim 2
Independent Claim
61 words
A method of producing a panel having decorative bark facing which comprises the following steps: placing bark flakes and chips on an adhesive-coated ligno-cellulosic substrate in a single layer; and applying pressure and compressing the flakes until pressure is exerted onto most of both the flakes and the chips and until both are bonded to the substrate in a single layer.
Claim 3
Independent Claim
61 words
A method of producing a panel having decorative bark facing which comprises the following steps: placing bark flakes and chips on an adhesive-coated lignocellulosic substrate in a single layer; and applying pressure and compressing the flakes until pressure is exerted onto most of both the flakes and the chips and until both are bonded to the substrate in a single layer.
Claim 4
Independent Claim
61 words
A method of producing a panel having decorative bark facing which comprises the following steps: placing bark flakes and chips on an adhesive-coated lignocellulosic substrate in a single layer; and applying pressure and compressing the flakes until pressure is exerted onto most of both the flakes and the chips and until both are bonded to the substrate in a single layer.
Claim 5
Dependent Claim
37 words
A method as set forth in claim 1, wherein is included the step of abrading the bark surface, after said surface has been bonded to the substrate, to remove soft tissue from the flakes and the chips.
Claim 6
Dependent Claim
38 words
A method as set forth in claim 1, wherein said substrate comprises a ligno-cellulosic board of the insulation board type, and wherein the thicker ones of said flakes and chips are partly embedded during said pressure applying step.
Claim 7
Dependent Claim
22 words
A method as set forth in claim 1, wherein said substrate is comprised of a bed of adhesive-coated bark flakes and chips.
Claim 8
Independent Claim
102 words
The method of producing a decorative bark facing for a ligno-cellulosic board which includes the following steps: reducing bark of conifers generally tangentially to flakes and chips, the flakes containing at least one periderm layer, the periderm layer being generally parallel to the facets of the flakes, and the chips being smaller in size than the flakes; placing the flakes on the adhesive of an adhesive coated substrate with spaces between the flakes; introducing chips in the spaces; applying pressure and compressing the flakes until pressure is exerted onto most flakes and chips; and bonding the flakes and chips to the panel.
Claim 9
Independent Claim
102 words
The method of producing a decorative bark facing for a ligno-cellulosic board which includes the following steps: reducing bark of conifers generally tangentially to flakes and chips, the flakes containing at least one periderm layer, the periderm layer being generally parallel to the facets of the flakes, and the chips being smaller in size than the flakes; placing the flakes on the adhesive of an adhesive coated substrate with spaces between the flakes; introducing chips in the spaces; applying pressure and compressing the flakes until pressure is exerted onto most flakes and chips; and bonding the flakes and chips to the panel.
Claim 10
Dependent Claim
39 words
The method as set forth in claim 5, wherein is included the step of abrading the entire bark surface after said bonding step and removing phloem, thin-walled cork tissue and expanded phelloderm tissue as well as less well-bonded chips.
Claim 11
Dependent Claim
45 words
A method as set forth in claim 5, wherein is included the steps of compressing the flakes and chips beyond their elastic limit, abrading the entire surface to remove all soft and loose material from the same to thereby expose hard, densified, irregularly-shaped periderm layers.
Claim 12
Independent Claim
134 words
A method of producing a hard, decorative bark facing on a ligno-cellulosic substrate which includes in part the following steps: placing bark flakes in a single layer on an adhesive-coated substrate with open spaces between the flakes; depositing bark chips in two or more layers onto the surface with most of the chips in the spaces between the flakes; applying pressure to compress the flakes until pressure is exerted onto all of the flakes and chips in contact with the adhesive coat; maintaining the pressure until all the flakes and chips in contact with the adhesive coat are bonded to the substrate in substantially a single layer; and abrading the surface to remove the chips not bonded to the substrate and to remove soft tissue from the flakes and chips bonded to the substrate.
Claim 13
Independent Claim
134 words
A method of producing a hard, decorative bark facing on a ligno-cellulosic substrate which includes in part the following steps: placing bark flakes in a single layer on an adhesive-coated substrate with open spaces between the flakes; depositing bark chips in two or more layers onto the surface with most of the chips in the spaces between the flakes; applying pressure to compress the flakes until pressure is exerted onto all of the flakes and chips in contact with the adhesive coat; maintaining the pressure until all the flakes and chips in contact with the adhesive coat are bonded to the substrate in substantially a single layer; and abrading the surface to remove the chips not bonded to the substrate and to remove soft tissue from the flakes and chips bonded to the substrate.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-06-02 | 1978-12-02 | 1979-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-02 | 1982-12-02 | 1983-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-02 | 1986-12-02 | 1987-06-03 | $7700.00 | Window Closed / Lapsed |