US3690801A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Discharge device for platen press
Assignee: G Siempelkamp GmbH and Co KG
•
Filing: 1970-07-10
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Granted: 1972-09-12
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Expires: 1990-07-10
Abstract
Abstract A horizontal frame, riding on fixed rails, can be slid into the gap between two separated press plates for removing a freshly pressed board with the aid of an extractor bar dropped behind the far edge of the board by the turning of a rotatable frame member. Two sets of bristles on the rotatable frame member come at the same time into contact with the upper and lower press plates to sweep their confronting surfaces upon the withdrawal of the frame. Retractable extensions at the ends of the extractor bar may serve for the withdrawal of spacing strips together with the board.
Inventors
- 👤 Gerhard Hutz
- 👤 Karl Muller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:41
CPC Classifications
B; B27; B27N; B27N3/00; B27N3/08; B27N3/20; B27N3/22; Y; Y10; Y10S; Y10S425/00; Y10S425/116
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
164 words
In a plant for the production of pressed boards, including a lower plate and an upper plate movable toward and away from each other for the compaction of a pile of particulate material therebetween, the combination therewith of guide means alongside said plates, reciprocable extraction means movable on said guide means from one side into the space between said plates upon separation thereof, and abutment means on said extraction means positionable beyond a remote edge of a freshly pressed board for entraining same out of said space upon withdrawal of said extraction means to said one side, said extraction means comprising a pair of parallel arms and a swivel member supported on said arms for rotation about an axis paralleling said remote edge, said abutment means being mounted on said member, said member having a length at least equal to the dimension of the board parallel to said axis, said abutment means comprising a blade extending over substantially the full length of said member.
Claim 2
Dependent Claim
164 words
In a plant for the production of pressed boards, including a lower plate and an upper plate movable toward and away from each other for the compaction of a pile of particulate material therebetween, the combination therewith of guide means alongside said plates, reciprocable extraction means movable on said guide means from one side into the space between said plates upon separation thereof, and abutment means on said extraction means positionable beyond a remote edge of a freshly pressed board for entraining same out of said space upon withdrawal of said extraction means to said one side, said extraction means comprising a pair of parallel arms and a swivel member supported on said arms for rotation about an axis paralleling said remote edge, said abutment means being mounted on said member, said member having a length at least equal to the dimension of the board parallel to said axis, said abutment means comprising a blade extending over substantially the full length of said member.
Claim 3
Dependent Claim
51 words
The combination defined in claim 1 wherein said lower plate is adapted to carry a pair of spacing strips transverse to said axis for limiting the relative approach of said plates, said blade being provided with retractable end extensions engageable with said spacing strips for withdrawing same concurrently with a board.
Claim 4
Dependent Claim
23 words
The combination defined in claim 1, further comprising conveyor means at said one side for removing a board entrained by said abutment means.
Claim 5
Dependent Claim
26 words
The combination defined in claim 1 wherein said member is provided with brush means effective during said withdrawal to sweep at least one of said plates.
Claim 6
Dependent Claim
42 words
The combination defined in claim 4 wherein said brush means comprises a first set of bristles positioned to contact the lower surface of said upper plate and a second set of bristles positioned to contact the upper surface of said lower plate.
Claim 7
Dependent Claim
33 words
The combination defined in claim 5 wherein said sets of bristles are relatively staggered in the direction of reciprocation, said first set of bristles trailing said second set of bristles during said withdrawal.
Claim 8
Dependent Claim
23 words
The combination defined in claim 4 wherein said member is provided with suction means for exhausting fragments swept up by said brush means.
Claim 9
Dependent Claim
184 words
In a plant for the production of pressed boards, including a lower plate and an upper plate movable toward and away from each other for the compaction of a pile of particulate material therebetween, the combination therewith of guide means alongside said plates, reciprocable extraction means movable on said guide means from one side into the space between said plates upon separation thereof, and abutment means on said extraction means positionable beyond a remote edge of a freshly pressed board for entraining same out of said space upon withdrawal of said extraction means to said one side, said extraction means comprising a pair of parallel arms and a swivel member supported on said arms for rotation about an axis paralleling said remote edge, said abutment means being mounted on said member, said member having a length at least equal to the dimension of the board parallel to said axis, said member being provided with brush means effective during said withdrawal to sweep at least one of said plates, said member being provided with suction means for exhausting fragments swept up by said brush means.
Claim 10
Dependent Claim
184 words
In a plant for the production of pressed boards, including a lower plate and an upper plate movable toward and away from each other for the compaction of a pile of particulate material therebetween, the combination therewith of guide means alongside said plates, reciprocable extraction means movable on said guide means from one side into the space between said plates upon separation thereof, and abutment means on said extraction means positionable beyond a remote edge of a freshly pressed board for entraining same out of said space upon withdrawal of said extraction means to said one side, said extraction means comprising a pair of parallel arms and a swivel member supported on said arms for rotation about an axis paralleling said remote edge, said abutment means being mounted on said member, said member having a length at least equal to the dimension of the board parallel to said axis, said member being provided with brush means effective during said withdrawal to sweep at least one of said plates, said member being provided with suction means for exhausting fragments swept up by said brush means.
Claim 11
Dependent Claim
42 words
The combination defined in claim 8 wherein saiD brush means comprises a first set of bristles positioned to contact the lower surface of said upper plate and a second set of bristles positioned to contact the upper surface of said lower plate.
Claim 12
Dependent Claim
33 words
The combination defined in claim 9 wherein said sets of bristles are relatively staggered in the direction of reciprocation, said first set of bristles trailing said second set of bristles during said withdrawal.
Claim 13
Dependent Claim
22 words
The combination defined in claim 8 wherein said abutment means comprises a blade extending over substantially the full length of said member.
Claim 14
Dependent Claim
51 words
The combination defined in claim 11 wherein said lower plate is adapted to carry a pair of spacing strips transverse to said axis for limiting the relative approach of said plates, said blade being provided with retractable end extensions engageable with said spacing strips for withdrawing same concurrently with a board.
Claim 15
Dependent Claim
23 words
The combination defined in claim 8, further comprising conveyor means at said one side for removing a board entrained by said abutment means.
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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) | 1975-09-12 | 1976-03-13 | 1976-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-12 | 1980-03-13 | 1980-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-12 | 1984-03-13 | 1984-09-12 | $7700.00 | Window Closed / Lapsed |