US3802986A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and means for making a composite board from lumber pieces
Assignee: Publishers Paper Co
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Filing: 1972-03-23
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Granted: 1974-04-09
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Expires: 1992-03-23
Abstract
Abstract Method and apparatus for making a composite board from lumber pieces. In the board, the pieces are disposed end-to-end, with adjacent ends bonded together in a joint. A two-component liquid adhesive system is utilized in bonding the pieces, with one component applied to one end which is to form a joint in the composite board, the the other component applied to the other end which is to form a joint. Heat applied to one of these ends after the application of the adhesive component and before the pieces are arranged end-to-end serves to provide a source of latent heat promoting curing of the glue line formed on the two ends being brought together. A method of producing a composite board from lumber pieces of high moisture content.
Inventors
- 👤 D Forsythe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 05:14
CPC Classifications
C; C09; C09J; C09J5/00; C09J5/04; B; B27; B27M; B27M3/00; B27M3/0013; B27M3/002; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052; Y10T156/1062; Y10T156/1066; Y10T156/12; Y10T156/1317; Y10T156/1322; Y10T156/14
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
193 words
A method of making a composite board from moist lumber pieces having moisture contents ranging from 20 to 50 percent comprising the steps of trimming ends of the pieces to remove defects, preparing the ends of the pieces for mating fit when the pieces are subsequently disposed end-to-end, applying adhesive to each set of ends of the pieces which mate when laid out, assembling the pieces end-to-end with the sets of ends of the pieces in mating relation, and cutting to size composite boards from the assembled pieces, said steps being performed in the order indicated and all of said steps being performed without significant drying of the pieces, said adhesive application being performed using a two-component liquid adhesive system with one component applied to one end of a set of ends and the other component applied to the other end of said set of ends, and heat being applied to at least one end of each set of ends after the adhesive component has been applied thereto and before the assembly of the pieces end-toend, and after cutting to size the composite boards drying the boards to reduce the moisture content thereof.
Claim 2
Independent Claim
193 words
A method of making a composite board from moist lumber pieces having moisture contents ranging from 20 to 50 percent comprising the steps of trimming ends of the pieces to remove defects, preparing the ends of the pieces for mating fit when the pieces are subsequently disposed end-to-end, applying adhesive to each set of ends of the pieces which mate when laid out, assembling the pieces end-to-end with the sets of ends of the pieces in mating relation, and cutting to size composite boards from the assembled pieces, said steps being performed in the order indicated and all of said steps being performed without significant drying of the pieces, said adhesive application being performed using a two-component liquid adhesive system with one component applied to one end of a set of ends and the other component applied to the other end of said set of ends, and heat being applied to at least one end of each set of ends after the adhesive component has been applied thereto and before the assembly of the pieces end-toend, and after cutting to size the composite boards drying the boards to reduce the moisture content thereof.
Claim 3
Dependent Claim
28 words
The method of claim 1, wherein heating of said one end of each set of ends is done radiantly, with radiant heat applied locally to said one end.
Claim 4
Dependent Claim
42 words
The method of claim 1, wherein the pieces are prepared for mating fit by cutting tongue and grooves in the ends of the pieces, and radiant heat is applied with such directed longitudinally of the piece against the end of the piece.
Claim 5
Dependent Claim
79 words
The method of claim 1, wherein the pieces are conveyed sidewise on a conveyor after the application of an adhesive component to said one end of each set of ends, the pieces are arranged on said conveyor with said one ends facing a common side of the conveyor, and wherein heating is performed radiantly by a radiant heat source disposed adjacent said common side of the conveyor and adjacent the path travelled by said one ends of the pieces.
Claim 6
Independent Claim
172 words
A method of making a composite board from lumber pieces comprising preparing, by cutting, tongue and grooves in opposite ends oF the lumber pieces adapting the pieces for mating fit when the pieces are subsequently placed end-to-end, applying with respect to each set of ends that are to be mated in the composite board a two-component liquid adhesive system, with one component applied to one end of the set and the other component applied to the other end of said set, radiantly heating at least one end of each set of ends after the adhesive component has been applied thereto to concentrate the adhesive component thereon and to raise the temperature of said one end whereby latent heat is introduced thereto, and bringing together in mating relationship the sets of ends of said pieces with the pieces disposed end-to-end, the adhesive components on said sets of ends of the pieces then uniting to form at least partially cured glue lines bonding the ends in joints, said formation promoted by said latent heat.
Claim 7
Independent Claim
172 words
A method of making a composite board from lumber pieces comprising preparing, by cutting, tongue and grooves in opposite ends oF the lumber pieces adapting the pieces for mating fit when the pieces are subsequently placed end-to-end, applying with respect to each set of ends that are to be mated in the composite board a two-component liquid adhesive system, with one component applied to one end of the set and the other component applied to the other end of said set, radiantly heating at least one end of each set of ends after the adhesive component has been applied thereto to concentrate the adhesive component thereon and to raise the temperature of said one end whereby latent heat is introduced thereto, and bringing together in mating relationship the sets of ends of said pieces with the pieces disposed end-to-end, the adhesive components on said sets of ends of the pieces then uniting to form at least partially cured glue lines bonding the ends in joints, said formation promoted by said latent heat.
Claim 8
Dependent Claim
74 words
The method of claim 5, wherein after applying the two-component liquid adhesive system the pieces are arranged on a conveyor with said one set of ends facing a common side of the conveyor, and the pieces are conveyed by said conveyor in a direction extending across their length past a heating station disposed on said common side of the conveyor, the path taken by said ends while so being conveyed being through said station.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-04-08 | 1977-10-08 | 1978-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-08 | 1981-10-08 | 1982-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-08 | 1985-10-08 | 1986-04-09 | $7700.00 | Window Closed / Lapsed |