US6062375A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Endless conveyor belt mounted on a rotatable drum
Assignee: John Bean Technologies AB
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Filing: 1998-10-06
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Granted: 2000-05-16
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Expires: 2018-10-06
Abstract
Abstract A belt conveyor comprises a drum, which is rotatably mounted on a vertical center shaft (4'), and an endless conveyor belt, which along part of its length follows a helical path through several turns around the drum and in contact with the outside of the drum. The drum has a plurality of vertical strips (10), which are distributed around the outside of the drum, engage the conveyor belt through the majority of the turns thereof and are each vertically movable from a starting position in one direction together with the belt through essentially one rotation of the drum and are then successively returnable vertically in the opposite direction to the starting position.
Inventors
- 👤 Ingmar Pupp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:34
CPC Classifications
B; B65; B65G; B65G21/00; B65G21/16; B65G21/18; B65G2207/00; B65G2207/24
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
119 words
A belt conveyor comprising a drum, which is rotatably mounted on a vertical center shaft (4'), an endless conveyor belt (2), having a length which along part of the length thereof follows a helical path through a plurality of turns around the drum and in contact with an outside of the drum, and a plurality of vertical strips (10, 10', 10"), which are distributed around the outside of the drum, engaging the conveyor belt (2) through a majority of the turns thereof and each being vertically moveable from a starting position in one direction together with the belt during essentially one rotation of the drum and are then successively returnable vertically in an opposite direction to the starting position.
Claim 2
Dependent Claim
119 words
A belt conveyor comprising a drum, which is rotatably mounted on a vertical center shaft (4'), an endless conveyor belt (2), having a length which along part of the length thereof follows a helical path through a plurality of turns around the drum and in contact with an outside of the drum, and a plurality of vertical strips (10, 10', 10"), which are distributed around the outside of the drum, engaging the conveyor belt (2) through a majority of the turns thereof and each being vertically moveable from a starting position in one direction together with the belt during essentially one rotation of the drum and are then successively returnable vertically in an opposite direction to the starting position.
Claim 3
Dependent Claim
21 words
A belt conveyor as claimed in claim 1, wherein a supporting rail (6) supports the conveyor belt (2) adjacent the drum.
Claim 4
Dependent Claim
26 words
A belt conveyor as claimed in claim 1, wherein a rail (6) supports the conveyor belt (2) at a side thereof facing away from the drum.
Claim 5
Dependent Claim
32 words
A belt conveyor as claimed in claim 1, wherein the conveyor belt (2) at a side thereof facing away from the drum is self-supporting and supported only along a lowermost turn thereof.
Claim 6
Dependent Claim
46 words
A belt conveyor as claimed in claim 1, wherein each of the strips (10, 10', 10") at a lower end thereof has a roller, which is controlled to follow a guide means, which determines a vertical position of the roller and thus of the strip thereof.
Claim 7
Dependent Claim
19 words
A belt conveyor as claimed in claim 1, wherein the drum consists of upper and lower chains (21, 22).
Claim 8
Dependent Claim
24 words
A belt conveyor as claimed in claim 1, wherein the strips (10') support every turn of the conveyor belt (2) adjacent to the drum.
Claim 9
Dependent Claim
25 words
A belt conveyor as claimed in claim 7, wherein each strip (10') has a folding flap (16) for each turn of the conveyor belt (2).
Claim 10
Dependent Claim
30 words
A belt conveyor as claimed in claim 1, wherein the conveyor belt (2), adjacent to the drum, is self-supporting and supported only along a lowermost turn thereof around the drum.
Claim 11
Dependent Claim
22 words
A belt conveyor as claimed in claim 9, wherein the strips (10, 10") support the lowermost turn of the conveyor belt (2).
Claim 12
Dependent Claim
29 words
A belt conveyor as claimed in claim 10, wherein the strips (10, 10") each have a flap (15, 15') for supporting the lowermost turn of the conveyor belt (2).
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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) | 2003-05-16 | 2003-11-15 | 2004-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-05-16 | 2007-11-15 | 2008-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-05-16 | 2011-11-15 | 2012-05-16 | $7700.00 | Window Closed / Lapsed |