US4470741A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Press unloading installation
Assignee: Carl Schenck AG
•
Filing: 1982-03-10
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Granted: 1984-09-11
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Expires: 2002-03-10
Abstract
Abstract Simultaneous removal from a multi-level press of all press trays carrying particle board panels is achieved with a press unloading installation. Such installation consists of a vertically movable press unloader cage having chain conveyor pairs, primary supports for the press trays and panels, and auxiliary supports for the trays alone after separation from the panels. The installation further includes a discharge device for removing the press trays from the auxiliary supports of the unloader cage. In order to shorten the return transport of flexible press trays, separation between the finished pressed particle board panels and the flexible press trays is accomplished in the press unloader cage.
Inventors
- 👤 Friedrich Bossler
- 👤 Gerhard Melzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:46
CPC Classifications
B; B30; B30B; B30B7/00; B30B7/02; B30B7/023; B27; B27N; B27N3/00; B27N3/08; B27N3/20; B27N3/22
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
176 words
A press unloading installation comprising a vertically movable inverted U-shaped press unloader cage with a central open area, the cage having multiple pairs of horizontally spaced apart conveyors with the conveyor pairs located one above the other each at a different cage level, spaced apart tray support means at each cage level adjacent each conveyor pair, means on the cage for simultaniously feeding a pressed panel and its associated press tray partially into the cage at each cage level, means on each conveyor pair at each cage level connected to engage and shift the press tray and its associated panel completely into the cage and onto the tray support means, means for individually removing each panel from the cage and simultaneously separating the panel from its associated press tray where the conveyor pairs make a directional change while maintaining the tray with the conveyor pair and depositing the separated tray onto the tray support means, and discharge means moveable into the central open area of the inverted U-shaped cage for removing the separated press trays therefrom.
Claim 2
Dependent Claim
176 words
A press unloading installation comprising a vertically movable inverted U-shaped press unloader cage with a central open area, the cage having multiple pairs of horizontally spaced apart conveyors with the conveyor pairs located one above the other each at a different cage level, spaced apart tray support means at each cage level adjacent each conveyor pair, means on the cage for simultaniously feeding a pressed panel and its associated press tray partially into the cage at each cage level, means on each conveyor pair at each cage level connected to engage and shift the press tray and its associated panel completely into the cage and onto the tray support means, means for individually removing each panel from the cage and simultaneously separating the panel from its associated press tray where the conveyor pairs make a directional change while maintaining the tray with the conveyor pair and depositing the separated tray onto the tray support means, and discharge means moveable into the central open area of the inverted U-shaped cage for removing the separated press trays therefrom.
Claim 3
Dependent Claim
28 words
A press unloading installation according to claim 1 wherein the tray support means includes a support located directly below the lowermost conveyor pair for the separated press tray.
Claim 4
Dependent Claim
31 words
A press unloading installation according to any one of claim 1 or 2 wherein the discharge means is located directly below the cage for movement into the central open area thereof.
Claim 5
Dependent Claim
47 words
A press unloading installation according to claim 1 wherein the discharge means is located directly below the cage for movement into the central open area, and elevator means for vertically moving the unloader cage relative to the discharge means to remove separated press trays from the cage.
Claim 6
Dependent Claim
40 words
A press unloading installation according to any one of claims 1, 2 or 4 including a drum-like sheathing in the area of the directional change of each conveyor pair for guiding each press tray as it makes such directional change.
Claim 7
Dependent Claim
31 words
A press unloading installation according to any one of claims 1, 2 or 4 including a roller conveyor system for transporting the panel away from the cage upon its removal therefrom.
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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) | 1987-09-11 | 1988-03-12 | 1988-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-09-11 | 1992-03-12 | 1992-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-09-11 | 1996-03-12 | 1996-09-11 | $7700.00 | Window Closed / Lapsed |