US3860381A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for the production of pressed board
Assignee: G Siempelkamp GmbH and Co KG
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Filing: 1973-07-05
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Granted: 1975-01-14
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Expires: 1993-07-05
Abstract
Abstract A system for the production of pressed board comprises an accelerating belt downstream of a mat-forming conveyor for depositing successive mats upon two stacked conveyors at a speed greater than the speed of the mat-forming conveyor. Once the stacked conveyors are fully charged by successively positioning them at the level of the accelerating conveyor, they simultaneously feed their mats into the openings of two-opening prepress in which the upper and lower platens compress the mats against a substantially stationary intermediate platen. Both compressed mats are then simultaneously fed to two levels of a multilevel charging rack so that, when the latter is fully charged, all of the compressed mats can simultaneously be introduced into a multiplaten press for finish pressing.
Inventors
- 👤 Jurgen Pesch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:44
CPC Classifications
B; B27; B27N; B27N3/00; B27N3/08; B27N3/20
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
209 words
An installation for the production of pressed board, comprising: a. a multiplaten press having a multiplicity of tiers each adapted to receive a compressed mat for the finish-pressing thereof into a board; b. a charging rack adjacent said multiplaten press and having a number of levels corresponding to the number of tiers of said press, said levels each receiving a compressed mat for the simultaneous displacement thereof onto the respective tiers of said multiplaten press; c. a two-opening prepress upstream of said rack and comprising: c1. a generally stationary intermediate platen, c2. an upper platen mounted above said intermediate platen, c3. a lower platen mounted below said intermediate platen, and c4. means for displacing both said upper and lower platens toward said intermediate platen to compress respective mats against said intermediate platen; d. means for simultaneously feeding the compressed mats in said prepress onto respective levels of said charging rack; e. a pair of stacked vertically displaceable conveyors upstream of said prepress and respectively alignable with openings thereof for advancing mats simultaneously into both openings of said prepress; and f. Means for feeding a succession of mats to said stacked conveyors at a predetermined level, said stacked conveyors being successively positionable at said predetermined level for receiving respective mats.
Claim 2
Dependent Claim
209 words
An installation for the production of pressed board, comprising: a. a multiplaten press having a multiplicity of tiers each adapted to receive a compressed mat for the finish-pressing thereof into a board; b. a charging rack adjacent said multiplaten press and having a number of levels corresponding to the number of tiers of said press, said levels each receiving a compressed mat for the simultaneous displacement thereof onto the respective tiers of said multiplaten press; c. a two-opening prepress upstream of said rack and comprising: c1. a generally stationary intermediate platen, c2. an upper platen mounted above said intermediate platen, c3. a lower platen mounted below said intermediate platen, and c4. means for displacing both said upper and lower platens toward said intermediate platen to compress respective mats against said intermediate platen; d. means for simultaneously feeding the compressed mats in said prepress onto respective levels of said charging rack; e. a pair of stacked vertically displaceable conveyors upstream of said prepress and respectively alignable with openings thereof for advancing mats simultaneously into both openings of said prepress; and f. Means for feeding a succession of mats to said stacked conveyors at a predetermined level, said stacked conveyors being successively positionable at said predetermined level for receiving respective mats.
Claim 3
Dependent Claim
55 words
The installation defined in claim 1 wherein said means for feeding a succession of mats to said stacked conveyors comprises an accelerating belt having a transfer nose for depositing each mat upon the respective conveyor of the stack at a rate sufficient to charge the stack with mats during the pressing period of said prepress.
Claim 4
Dependent Claim
59 words
The installation defined in claim 2 wherein said means for feeding said succession of mats to said stacked conveyors comprises a mat-forming belt upstream of said accelerating belt and a dispenser for depositing a mat-forming mixture on said mat-forming belt, said accelerating belt advancing said mats onto said conveyors at a speed higher than that of the mat-forming belt.
Claim 5
Dependent Claim
42 words
The installation defined in claim 1 wherein said means for feeding the compressed mats onto respective levels of said charging rack includes a respective conveyor belt passing through each of said openings of said prepress and receiving mats from the stacked conveyors.
Claim 6
Dependent Claim
28 words
The installation defined in claim 4 wherein said intermediate platen comprises a rigid beam adapted to withstand the press pressure of either of the other platens applied alone.
Claim 7
Dependent Claim
29 words
The installation defined in claim 4 wherein said intermediate platen is at least presently yieldable and is supported by each of the other platens against the force applied thereby.
Claim 8
Dependent Claim
30 words
The installation defined in claim 5 wherein said intermediate platen has upper and lower plates, said plates and said upper and lower platens being provided with means for heating same.
Claim 9
Dependent Claim
11 words
The installation defined in claim 4 wherein said platens are heated.
Claim 10
Dependent Claim
31 words
The installation defined in claim 8 wherein said charging rack is provided at each of its levels with a conveyor pallet for advancing the respective compressed mats into the multiplaten press.
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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) | 1978-01-13 | 1978-07-15 | 1979-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-13 | 1982-07-15 | 1983-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-13 | 1986-07-15 | 1987-01-14 | $7700.00 | Window Closed / Lapsed |