Patent US2625347A successfully refreshed from Google Patents.
US3792784A
Expired / Lapsed
US
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Device for handling egg trays
Assignee: Moba Holding Barneveld BV
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Filing: 1972-05-24
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Granted: 1974-02-19
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Expires: 1992-05-24
Abstract
Abstract The invention provides a device for automatically removing eggtrays from a stack, in which each tray is rotated about 90* with respect to the preceding tray, the device containing a support that is vertically movable and rotatable about a vertical axis such that a predetermined vertical displacement equalling the vertical distance between two successive trays in the stack corresponds to a rotation of about 90*, and a gripper for removing the uppermost tray from the stack. The device can also be used for forming a stack of trays as described.
Inventors
- 👤 J Mosterd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:38
CPC Classifications
B; B65; B65B; B65B43/00; B65B43/42; B65B43/46; B65G; B65G59/00; B65G59/02; B65G59/026; Y; Y10; Y10S; Y10S414/00; Y10S414/10; Y10S414/102; Y10S414/103; Y10S414/13
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
208 words
A device for stacking or unstacking egg-trays comprising a vertically movable and horizontally rotatable support for a tray, first means for vertically moving the support and second means for rotating it, said first and second means being coupled such that movement of the support along a predetermined vertical distance in at least one predetermined sense, which distance equals the height difference of two trays stacked on each other, corresponds to rotation of 90* of the support, said first and second means containing two rotational cams, one of which controls the height position of the support and the second of which controls the angular position of said support, said cams being mechanically coupled to each other, a first horizontal conveying device that is open in its centre region and is adapted to support a stack of trays in a predetermined directional position, said first means passing through said open centre region, a second horizontal conveying device and a tray gripper pivotably mounted on the free ends of a vertically swingable linkage arm system adapted to move a tray between a first fixed location, situated above said first conveying device and in vertical alignment with said support, and a laterally spaced second location situtated on said second horizontal conveying device.
Claim 2
Independent Claim
208 words
A device for stacking or unstacking egg-trays comprising a vertically movable and horizontally rotatable support for a tray, first means for vertically moving the support and second means for rotating it, said first and second means being coupled such that movement of the support along a predetermined vertical distance in at least one predetermined sense, which distance equals the height difference of two trays stacked on each other, corresponds to rotation of 90* of the support, said first and second means containing two rotational cams, one of which controls the height position of the support and the second of which controls the angular position of said support, said cams being mechanically coupled to each other, a first horizontal conveying device that is open in its centre region and is adapted to support a stack of trays in a predetermined directional position, said first means passing through said open centre region, a second horizontal conveying device and a tray gripper pivotably mounted on the free ends of a vertically swingable linkage arm system adapted to move a tray between a first fixed location, situated above said first conveying device and in vertical alignment with said support, and a laterally spaced second location situtated on said second horizontal conveying device.
Claim 3
Dependent Claim
40 words
A device according to claim 1, in which said conveying devices contain conveyor belts, that are open in their centres and at their edges are provided with raised portions adapted to fit into recesses of the lower side of egg-trays.
Claim 4
Dependent Claim
75 words
A device according to claim 1, provided with means for intermittently driving said first conveying device, said means being coupled to the said first and second means for moving the support such that the first conveying device is moved along a predetermined distance, when the support a predetermined number of times is vertically moved and rotated over 90* , said predetermined number being equal to the number of vertical steps the support can carry out.
Claim 5
Dependent Claim
20 words
A device according to claim 1, in which the tray gripper is provided with means to foursidedly support the trays.
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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) | 1977-02-18 | 1977-08-20 | 1978-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-18 | 1981-08-20 | 1982-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-18 | 1985-08-20 | 1986-02-19 | $7700.00 | Window Closed / Lapsed |