Patent US4170433A successfully refreshed from Google Patents.
US4170433A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for emptying bulk material from a storage chamber
Assignee: HAAHJEM MEKANISHE AA
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Filing: 1978-01-17
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Granted: 1979-10-09
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Expires: 1998-01-17
Abstract
Abstract Apparatus for emptying bulk material from a storage chamber comprising a first rake in the storage chamber for transporting material in the longitudinal direction, the first rake being movable vertically and transversely. A vertical transport device is mounted in the storage chamber for transporting material from the storage chamber vertically upwards for removal from the storage chamber. A second rake is mounted in the storage chamber transversely and the second rake is positioned adjacent one end of the first rake at a level therebelow for receiving material longitudinally transported by the first rake to in turn transport the material transversely to the vertical transport device. The vertical transport device comprises a plurality of vertically displaceable buckets with a cover plate arrangement positioned in front of the buckets at a level below the second rake and associated with a mechanism for adjusting the cover plates for downward movement as the storage chamber is emptied of material.
Inventors
- 👤 Kaare Haahjem
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:34
CPC Classifications
B; B63; B63B; B63B27/00; B63B27/22; B65; B65G; B65G65/00; B65G65/30; B65G65/34; B65G65/36; B65G65/38
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
153 words
Apparatus for emptying bulk material from a storage chamber, said apparatus comprising first rake means in said storage chamber for transporting material in the storage chamber in a first direction therein, means for moving said first rake means vertically, means for moving said first rake means transversely of said first direction, vertical transport means for transporting material from the storage chamber upwardly for removal from said storage chamber, second rake means in said storage chamber extending at an angle with respect to said first rake means for transporting material in the storage chamber in a second direction therein to said vertical transport means, and means for moving said second rake means vertically, said second rake means being positioned adjacent one end of said first rake means for receiving material transported by said first rake means in said first direction and for transporting the material in said second direction to said vertical transport means.
Claim 2
Dependent Claim
153 words
Apparatus for emptying bulk material from a storage chamber, said apparatus comprising first rake means in said storage chamber for transporting material in the storage chamber in a first direction therein, means for moving said first rake means vertically, means for moving said first rake means transversely of said first direction, vertical transport means for transporting material from the storage chamber upwardly for removal from said storage chamber, second rake means in said storage chamber extending at an angle with respect to said first rake means for transporting material in the storage chamber in a second direction therein to said vertical transport means, and means for moving said second rake means vertically, said second rake means being positioned adjacent one end of said first rake means for receiving material transported by said first rake means in said first direction and for transporting the material in said second direction to said vertical transport means.
Claim 3
Dependent Claim
25 words
Apparatus as claimed in claim 1 wherein said vertical transport means comprises bucket means for transporting the material upwards for removal from the storage chamber.
Claim 4
Dependent Claim
23 words
Apparatus as claimed in claim 1 wherein said first and second rake means extend in horizontal planes at right angles to one another.
Claim 5
Dependent Claim
31 words
Apparatus as claimed in claim 3 comprising excavating arm means on said first rake means for moving bulk material at the perimeter of the storage chamber towards the first raking means.
Claim 6
Dependent Claim
38 words
Apparatus as claimed in claim 1 wherein said vertical transport means comprises cover plates extending vertically adjacent said second rake means and means for progressively moving said cover plates downwardly as the storage chamber is emptied of material.
Claim 7
Dependent Claim
21 words
Apparatus as claimed in claim 5 wherein said vertical transport means further comprises means connecting said cover plates in roll-front manner.
Claim 8
Dependent Claim
34 words
Apparatus as claimed in claim 6 wherein said vertical transport means further comprises vertically arranged band means, said cover plates being attached to said band means, and roller means drivingly engaging said band means.
Claim 9
Dependent Claim
20 words
Apparatus as claimed in claim 7 wherein said roller means is located proximate the bottom of said vertical transport means.
Claim 10
Dependent Claim
31 words
Apparatus as claimed in claim 1 wherein said storage chamber is substantially rectangular and includes opposite pairs of bounding walls, said vertical transport means being located proximate one of said walls.
Claim 11
Dependent Claim
52 words
Apparatus as claimed in claim 9 wherein said first rake means extends parallel to one of said pair of walls, the second rake means extending parallel to the other of said pair of walls, the wall which the vertical transport means is proximate to being one of said one pair of walls.
Claim 12
Dependent Claim
21 words
Apparatus as claimed in claim 1 wherein said second rake means is positioned at a level below said first rake means.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-10-08 | 1983-04-09 | 1983-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-10-08 | 1987-04-09 | 1987-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-10-08 | 1991-04-09 | 1991-10-09 | $7700.00 | Window Closed / Lapsed |