US3796529A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for the manufacture of fiberboards from binder-interspersed, chip-like and/or fibrous particles
Assignee: Individual
•
Filing: 1972-03-21
•
Granted: 1974-03-12
•
Expires: 1992-03-21
Abstract
Abstract A device for the manufacture of fiberboards from binderinterspersed, chip-like and/or fibrous particles wherein a preparatory press is disposed along the conveyor carrying the chip fleece ahead of the hot press to perform a preliminary compression thereby permitting the operating stroke of the hot press to be reduced with the result that the operations performed by the elements can be carried out more quickly and without loss of quality.
Inventors
- 👤 B Greten
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 05:24
CPC Classifications
B; B27; B27N; B27N3/00; B27N3/08; B27N3/10
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
126 words
A device for the manufacture of fiberboards from binderinterspersed, chip-like and/or fibrous particles comprising fleece conveying means including a fleece support web for moving a chip fleece intermittently along a path, dispersing means disposed at one end of said path for forming a continuous chip fleece on said support web, a hot press disposed along said path for compressing said chip fleece, a preparatory press disposed between said dispersing means and said hot press for effecting a preliminary compression of said chip fleece, said preparatory press including means for heating said chip fleece on said fleece support web, and spray nozzle means disposed between said preparatory press and said hot press for applying water to said partially compressed chip fleece as it enters said hot press.
Claim 2
Independent Claim
126 words
A device for the manufacture of fiberboards from binderinterspersed, chip-like and/or fibrous particles comprising fleece conveying means including a fleece support web for moving a chip fleece intermittently along a path, dispersing means disposed at one end of said path for forming a continuous chip fleece on said support web, a hot press disposed along said path for compressing said chip fleece, a preparatory press disposed between said dispersing means and said hot press for effecting a preliminary compression of said chip fleece, said preparatory press including means for heating said chip fleece on said fleece support web, and spray nozzle means disposed between said preparatory press and said hot press for applying water to said partially compressed chip fleece as it enters said hot press.
Claim 3
Dependent Claim
31 words
A device for the manufacture of fiberboards as defined in claim 1, further including means for subdividing the chip fleece into spaced sections prior to its introduction into said preparatory press.
Claim 4
Dependent Claim
24 words
A device for the manufacture of fiberboards as defined in claim 1, wherein said heating means heats said chip fleece to about 100* C.
Claim 5
Independent Claim
109 words
A device for the manufacture of fiberboards from binder-interspersed, chip-like and/or fibrous particles comprising conveying means including an endless fleece support web and roller means engaging said web for supporting and drawing said web intermittently along a path, dispersing means disposed at one end of said path for forming a continuous chip fleece on said support web, a hot press disposed along said path for compressing said chip fleece, a heated preparatory press disposed between said dispersing means and said hot press for effecting a preliminary compression of said chip fleece, and means for subdividing the chip fleece into spaced sections prior to its introduction into said preparatory press.
Claim 6
Independent Claim
109 words
A device for the manufacture of fiberboards from binder-interspersed, chip-like and/or fibrous particles comprising conveying means including an endless fleece support web and roller means engaging said web for supporting and drawing said web intermittently along a path, dispersing means disposed at one end of said path for forming a continuous chip fleece on said support web, a hot press disposed along said path for compressing said chip fleece, a heated preparatory press disposed between said dispersing means and said hot press for effecting a preliminary compression of said chip fleece, and means for subdividing the chip fleece into spaced sections prior to its introduction into said preparatory press.
Claim 7
Dependent Claim
41 words
A device for the manufacture of fiberboards as defined in claim 4, further including spray nozzle means disposed between said preparatory press and said hot press for applying water to said partially compressed chip fleece as it enters said hot press.
Claim 8
Dependent Claim
27 words
A device as defined in claim 4, wherein said dispersing means is provided in the form of a reciprocating dispenser travelling along a portion of said path.
Claim 9
Dependent Claim
27 words
A device as defined in claim 6, wherein said support web is provided in the form of a steel belt serving as a conveying and pressing sheet.
References Cited (Backward Citations)
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Cited
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US2907071A
Cited
US3032820A
Cited
US3152200A
Cited
US3237242A
Cited
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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) | 1977-03-11 | 1977-09-10 | 1978-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-11 | 1981-09-10 | 1982-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-11 | 1985-09-10 | 1986-03-12 | $7700.00 | Window Closed / Lapsed |