Patent US3934587A successfully refreshed from Google Patents.
Patent US4899871A successfully refreshed from Google Patents.
US4899871A
Expired / Lapsed
US
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Storing installation, primarily for an endless conveyor belt travelling helically in a number of turns laid upon one another in a pile
Assignee: John Bean Technologies AB
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Filing: 1987-07-20
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Granted: 1990-02-13
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Expires: 2007-07-20
Abstract
Abstract A storing installation comprises two endless chains supporting a load for the conveyance thereof along a conveyance path and travelling in opposition to said conveyance path in a return path having more tightly curved portions than said conveyance path, to formed closed chain paths, and a frame for supporting said chains via at least one series of rolling elements arranged between said frame and the respective chain. Each chain comprises links overlapping one another in such a manner that the chain and the frame form an essentially closed channel for the rolling elements throughout the tighter return path.
Inventors
- 👤 Lennart Olsson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:54
CPC Classifications
B; B65; B65G; B65G1/00; B65G1/02; B65G1/04; B65G1/12; B65G21/00; B65G21/16; B65G21/18; B65G2207/00; B65G2207/24
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
168 words
A storing installation which comprises two endless chains (9, 10) supporting a load for the conveyance thereof along a conveyance path and travelling in opposition to said conveyance path in a return path (13, 14) having more tightly curved portions than said conveyance path, to form closed chain paths, and a frame (11, 12) for supporting said chains via at least one series of rolling elements (26) arranged between said frame and the respective chain (9, 10), characterised in that each chain (9, 10) comprises links (17, 19) overlapping one another along the upper side and one edge side of the chain and hingedly interconnected at the other edge side of the chain along axes perpendicular to the longitudinal direction and the lateral direction of the chain, such that the chain (9, 10) and the frame (11, 12) form an essentially closed channel for the rolling elements (26) also throughout the tighter return path (13, 14) where the links are swung out from one another about said axes.
Claim 2
Dependent Claim
168 words
A storing installation which comprises two endless chains (9, 10) supporting a load for the conveyance thereof along a conveyance path and travelling in opposition to said conveyance path in a return path (13, 14) having more tightly curved portions than said conveyance path, to form closed chain paths, and a frame (11, 12) for supporting said chains via at least one series of rolling elements (26) arranged between said frame and the respective chain (9, 10), characterised in that each chain (9, 10) comprises links (17, 19) overlapping one another along the upper side and one edge side of the chain and hingedly interconnected at the other edge side of the chain along axes perpendicular to the longitudinal direction and the lateral direction of the chain, such that the chain (9, 10) and the frame (11, 12) form an essentially closed channel for the rolling elements (26) also throughout the tighter return path (13, 14) where the links are swung out from one another about said axes.
Claim 3
Dependent Claim
33 words
A storing installation as claimed in claim 1, characterised by slide rails (28) mounted on the frame (11, 12) for sliding contact with chain rails (23) on each of said chains (9, 10).
Claim 4
Dependent Claim
31 words
A storing installation as claimed in claim 2, characterised in that link rollers (22) are rotatably mounted about the link connecting means (21) for rolling contact with said slide rail (28).
Claim 5
Dependent Claim
27 words
A storing installation as claimed in claim 3, characterised in that said link rollers (22) are located between the links (17, 19) and the chain rail (23).
Claim 6
Dependent Claim
44 words
A storing installation as claimed in any one claim 2, characterised in that said links (17, 19) comprise outer links (17) and inner links (19) which are mounted alternately with one another and of which the outer links (17) encompass the inner links (19).
Claim 7
Dependent Claim
45 words
A storing installation as claimed in claim 5, characterised in that side edges (25) of said inner links facing away from said link connecting means (21) are bent with a radius of curvature essentially corresponding to the radius of balls (26) forming the rolling elements.
Claim 8
Dependent Claim
48 words
A storing installation as claimed in claim 1 characterised in that the links (17 and 19, respectively) comprised by at least one chain (9) and adjoining one another are arranged with gaps (18 and 20, respectively) therebetween so that the chain (9) is laterally flexible in both directions.
Claim 9
Dependent Claim
46 words
A storing installation as claimed in claim 1 characterised in that the rolling elements (26) in the return path (13, 14) are conducted along a path closer to the pivot side of the links (17, 19) and in rolling contact with but the overlying link portions.
Claim 10
Dependent Claim
74 words
A storing installation as claimed in claim 1 for an endless conveyor belt travelling helically in a number of turns laid upon one another in a pile, the chains of said storing installation being arranged underneath the belt pile, supporting both edge portions of the lowermost belt turn, and travelling in opposition to the rise of the conveyor belt in the return path which is tighter than the conveyor belt path in the pile.
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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) | 1993-02-12 | 1993-08-14 | 1994-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-02-12 | 1997-08-14 | 1998-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-02-12 | 2001-08-14 | 2002-02-13 | $7700.00 | Window Closed / Lapsed |