US3890077A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for manufacturing artificial boards and shapes
Assignee: DODSON C LEE TEN (10%) PERCENT
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Filing: 1973-01-05
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Granted: 1975-06-17
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Expires: 1993-01-05
Abstract
Abstract A method and apparatus for producing elongated boards of artificial lumber reinforced with elongated reinforcing members providing strength thereto. The boards are constructed of any suitable filler material such as ligneous fibers mixed with thermosetting resin. The mixture of fibers and resin are pulled into a compression chamber by a plurality of elongated belts while the reinforcing strands are fed thereto. The belts are rotated to compress the mixture about the strands while the strands are under tension or undulated. Then the mixture is fed through a curing chamber for curing.
Inventors
- 👤 John A Holman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:31
CPC Classifications
B; B29; B29C; B29C43/00; B29C43/32; B29C43/44; B29C43/48; B27; B27N; B27N3/00; B27N3/08; B27N3/24; B29C43/22; B29K; B29K2311/00; B29K2311/14; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24132; Y10T428/24355; Y10T428/24942; Y10T428/24992; Y10T428/249921; Y10T428/249924; Y10T428/249925; Y10T428/31504; Y10T428/31551; Y10T428/31627; Y10T428/31971; Y10T428/31989
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
192 words
An apparatus for producing elongated articifial boards from a mixture of filler material and thermosetting resin reinforced with elongated reinforcing members comprising: a plurality of elongated endless belts radially spaced about a longitudinal axis, rotatable members supporting each of said belts in an extended loop, said belts being positioned about said longitudinal axis so that the inner surfaces of each of said belts cooperate to define an elongated forming die with an entrance opening at one end and an exit opening at the other end, said elongated forming die having a decreasing cross sectional area from adjacent said entrance opening to an intermediate portion thereof, means for supplying said mixture of filler material and thermosetting resiN to the entrance of said elongated forming die, means for feeding said elongated reinforcing members to said elongated forming die, heaters carried closely adjacent said inner surfaces of said belts, and means for rotating said belts for compressing said mixture as said mixture is pulled through said decreasing cross sectional area of said forming die and for pulling said mixture and said elongated reinforcing members through said elongated die forming an elongated reinforced cured artificial board.
Claim 2
Independent Claim
192 words
An apparatus for producing elongated articifial boards from a mixture of filler material and thermosetting resin reinforced with elongated reinforcing members comprising: a plurality of elongated endless belts radially spaced about a longitudinal axis, rotatable members supporting each of said belts in an extended loop, said belts being positioned about said longitudinal axis so that the inner surfaces of each of said belts cooperate to define an elongated forming die with an entrance opening at one end and an exit opening at the other end, said elongated forming die having a decreasing cross sectional area from adjacent said entrance opening to an intermediate portion thereof, means for supplying said mixture of filler material and thermosetting resiN to the entrance of said elongated forming die, means for feeding said elongated reinforcing members to said elongated forming die, heaters carried closely adjacent said inner surfaces of said belts, and means for rotating said belts for compressing said mixture as said mixture is pulled through said decreasing cross sectional area of said forming die and for pulling said mixture and said elongated reinforcing members through said elongated die forming an elongated reinforced cured artificial board.
Claim 3
Independent Claim
184 words
An apparatus for manufacture of elongated artificial boards from a mixture of fibers and a heat activated binder reinforced with elongated strands comprising: an elongated compression chamber having open forward and exit ends, means for feeding said mixture of fibers and binder to said open forward end of said compression chamber, an elongated curing chamber coupled to said exit end of said compression chamber and extending lengthwise therefrom for receiving said mixture in a compressed state from said compression chamber, heater means carried closely adjacent said curing chamber for curing said mixture of fibers and binder, said compression chamber and said curing chamber being defined by a plurality of elongated endless belts radially spaced about a longitudinal axis, rotatable members supporting said belts in an extended loop, a forward portion of said belts converging towards each other defining said compression chamber, and means for rotating said endless belts for drawing said mixture and elongated strands through said compression chamber for compressing said mixture around said reinforcing elongated strands and through said curing chamber for curing said binder whereby reinforced elongated artificial boards are produced.
Claim 4
Independent Claim
184 words
An apparatus for manufacture of elongated artificial boards from a mixture of fibers and a heat activated binder reinforced with elongated strands comprising: an elongated compression chamber having open forward and exit ends, means for feeding said mixture of fibers and binder to said open forward end of said compression chamber, an elongated curing chamber coupled to said exit end of said compression chamber and extending lengthwise therefrom for receiving said mixture in a compressed state from said compression chamber, heater means carried closely adjacent said curing chamber for curing said mixture of fibers and binder, said compression chamber and said curing chamber being defined by a plurality of elongated endless belts radially spaced about a longitudinal axis, rotatable members supporting said belts in an extended loop, a forward portion of said belts converging towards each other defining said compression chamber, and means for rotating said endless belts for drawing said mixture and elongated strands through said compression chamber for compressing said mixture around said reinforcing elongated strands and through said curing chamber for curing said binder whereby reinforced elongated artificial boards are produced.
Claim 5
Dependent Claim
50 words
The apparatus as set forth in claim 2 further comprising: means for engaging said elongated strands for placing said strands under tension as said mixture and strands are drawn through said compression chamber and said curing chamber whereby an artificial board is produced having reinforcing strands under tension extending therethrough.
Claim 6
Dependent Claim
41 words
The apparatus as set forth in claim 2 further comprising: a texturizing means interposed between said compression chamber and said means for feeding said elongated strands for placing a partially cured mixture of resin bonding agent and filler on said strands.
Claim 7
Dependent Claim
64 words
The apparatus as set forth in claim 3 wherein: said means for engaging said elongated strands includes a pair of spaced bars around which said strands pass in frictional contact therewith, means for rotating said bars for varying the frictional contact between said bars and strands for controlling the tension in said strands as said strands are pulled during the drawing of said mixture.
Claim 8
Dependent Claim
40 words
The apparatus as set forth in claim 2 wherein there are at least four elongated belts constructed of steel, said four belts being positioned to define opposed spaced side walls and a top and bottom wall of said curing chamber.
Claim 9
Independent Claim
164 words
An apparatus for manufacture of elongated artificial boards from a mixture of filler material and a binder reinforced with elongated strands comprising: an elongated compression chamber having open forward and exit ends, means for feeding said mixture of filler material and binder to said open forward end of said compression chamber, an elongated curing chamber adjacent to said exit end of said compression chamber and extending lengthwise therefrom for receiving said mixture in a compressed state from said compression chamber, said compression chamber and said curing chamber being defined by a plurality of elongated endless belts radially spaced about a longitudinal axis, rotatable members supporting said belts in an extended loop, a forward portion of said belts defining said compression chamber, and means for rotating said endless belts for drawing said mixture and elongated strands through said compression chamber for compressing said mixture around said reinforcing elongated strands and through said curing chamber for curiNg said binder whereby reinforced elongated artificial boards are produced.
Claim 10
Independent Claim
164 words
An apparatus for manufacture of elongated artificial boards from a mixture of filler material and a binder reinforced with elongated strands comprising: an elongated compression chamber having open forward and exit ends, means for feeding said mixture of filler material and binder to said open forward end of said compression chamber, an elongated curing chamber adjacent to said exit end of said compression chamber and extending lengthwise therefrom for receiving said mixture in a compressed state from said compression chamber, said compression chamber and said curing chamber being defined by a plurality of elongated endless belts radially spaced about a longitudinal axis, rotatable members supporting said belts in an extended loop, a forward portion of said belts defining said compression chamber, and means for rotating said endless belts for drawing said mixture and elongated strands through said compression chamber for compressing said mixture around said reinforcing elongated strands and through said curing chamber for curiNg said binder whereby reinforced elongated artificial boards are produced.
Claim 11
Independent Claim
156 words
An apparatus for producing artificial boards from a mixture of filler material and resin comprising: four elongated endless belts radially spaced about a longitudinal axis, rotatable members supporting each of said belts in an extended loop, said belts being positioned about said longitudinal axis so that an inner surface of each of said belts cooperate to define an elongated forming die with an entrance opening at one end and an exit opening at the other end, means for supplying said mixture of filler material and resin to the entrance of said elongated forming die, means for rotating said belts for pulling said mixture of filler material and resin through said elongated die forming an elongated artificial board and a forward end of at least one of said four belts adjacent said entrance of said elongated forming die converges towards said longitudinal axis for compressing said mixture as said mixture is pulled through said elongated forming die.
Claim 12
Independent Claim
156 words
An apparatus for producing artificial boards from a mixture of filler material and resin comprising: four elongated endless belts radially spaced about a longitudinal axis, rotatable members supporting each of said belts in an extended loop, said belts being positioned about said longitudinal axis so that an inner surface of each of said belts cooperate to define an elongated forming die with an entrance opening at one end and an exit opening at the other end, means for supplying said mixture of filler material and resin to the entrance of said elongated forming die, means for rotating said belts for pulling said mixture of filler material and resin through said elongated die forming an elongated artificial board and a forward end of at least one of said four belts adjacent said entrance of said elongated forming die converges towards said longitudinal axis for compressing said mixture as said mixture is pulled through said elongated forming die.
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) | 1978-06-16 | 1978-12-16 | 1979-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-16 | 1982-12-16 | 1983-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-16 | 1986-12-16 | 1987-06-17 | $7700.00 | Window Closed / Lapsed |