Patent US4224179A successfully refreshed from Google Patents.
US4091153A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Artificial boards and shapes
Assignee: DODSON C LEE TEN (10%) PERCENT
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Filing: 1975-03-26
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Granted: 1978-05-23
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Expires: 1995-03-26
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
2026-10-24 17:44
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: 8
Claim 1
Independent Claim
139 words
An elongated board of artificial lumber having a length much greater than the width and thickness and being of a predetermined thickness comprising: a homogeneous mixture of ligneous wood fibers and a cured thermosetting resin, a plurality of spaced elongated reinforcing strands extending the length of said board, said fibers and said resin on opposite sides of said board being compressed to said predetermined thickness and densified by having been heated and compressed under pressure while being held at said predetermined thickness defining smooth continuous outer layers having a substantially uniform density about the length of said board, a continuous core extending the length of said board having a density less than said outer layers, and said homogeneous mixture of fibers and resin forming a bond around said elongated reinforcing strand affording longitudinal and transverse strength to said board.
Claim 2
Dependent Claim
139 words
An elongated board of artificial lumber having a length much greater than the width and thickness and being of a predetermined thickness comprising: a homogeneous mixture of ligneous wood fibers and a cured thermosetting resin, a plurality of spaced elongated reinforcing strands extending the length of said board, said fibers and said resin on opposite sides of said board being compressed to said predetermined thickness and densified by having been heated and compressed under pressure while being held at said predetermined thickness defining smooth continuous outer layers having a substantially uniform density about the length of said board, a continuous core extending the length of said board having a density less than said outer layers, and said homogeneous mixture of fibers and resin forming a bond around said elongated reinforcing strand affording longitudinal and transverse strength to said board.
Claim 3
Dependent Claim
26 words
The elongated board of artificial lumber as set forth in claim 1 wherein said elongated reinforcing members extending through said elongated board have an undulated configuration.
Claim 4
Dependent Claim
20 words
The elongated board of artificial lumber as set forth in claim 1, wherein said elongated reinforcing strands are fiberglass strands.
Claim 5
Dependent Claim
20 words
The elongated board of artificial lumber as set forth in claim 1, wherein said elongated reinforcing strands are under tension.
Claim 6
Dependent Claim
40 words
The elongated board of artificial lumber as set forth in claim 1 further comprising: a textured coating carried on said elongated reinforcing members producing an uneven surface for enhancing bonding of said fibers and resin to said elongated reinforcing strands.
Claim 7
Dependent Claim
123 words
An elongated board of artificial lumber having a length much greater than the width and thickness comprising: a homogeneous mixture of ligneous wood fibers and a cured thermosetting resin, a plurality of spaced elongated reinforcing strands extending the length of said board, said fibers and said resin on all sides of said board being compressed and densified by having been compressed under pressure defining smooth continuous outer layers on all sides having a substantially uniform density about the length of said board, a continuous core extending the length of said board having a density less than said outer layers, and said homogeneous mixture of fibers and resin forming a bond around said elogated reinforcing strands affording longitudinal and transverse strength to said board.
Claim 8
Dependent Claim
123 words
An elongated board of artificial lumber having a length much greater than the width and thickness comprising: a homogeneous mixture of ligneous wood fibers and a cured thermosetting resin, a plurality of spaced elongated reinforcing strands extending the length of said board, said fibers and said resin on all sides of said board being compressed and densified by having been compressed under pressure defining smooth continuous outer layers on all sides having a substantially uniform density about the length of said board, a continuous core extending the length of said board having a density less than said outer layers, and said homogeneous mixture of fibers and resin forming a bond around said elogated reinforcing strands affording longitudinal and transverse strength to said board.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-05-22 | 1981-11-21 | 1982-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-05-22 | 1985-11-21 | 1986-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-05-22 | 1989-11-21 | 1990-05-23 | $7700.00 | Window Closed / Lapsed |