US3690474A
Expired / Lapsed
US
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Conveying device with two end positions connected by a conveyor belt and including a controllable drive connection
Assignee: Licentia Patent Verwaltungs GmbH
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Filing: 1971-07-28
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Granted: 1972-09-12
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Expires: 1991-07-28
Abstract
Abstract In a conveying device of the stacker type including a linearly displaceable carriage and a conveyor belt from which the carriage derives a motive force, a controllable drive connection is provided between two movable rollers, which form part of the connection, and means are provided to connect the two movable rollers so that the translation ratio definable by the peripheral speeds of the two rollers can be greater or less than 1 depending on the desired direction of movement of the carriage, or a pair of controllable drive connections, one with a translation ratio greater than 1, and one with a translation ratio less than 1, are provided so that the carriage can be controlled in both directions of motion.
Inventors
- 👤 Karl Klappenecker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 02:35
CPC Classifications
B; B65; B65H; B65H83/00; B65H83/02; B07; B07C; B07C1/00; B07C1/02; B07C1/025; B65H29/00; B65H29/50; B65H2301/00; B65H2301/30; B65H2301/32; B65H2301/321; B65H2513/00; B65H2513/40; B65H2515/00; B65H2515/30; B65H2515/34
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
335 words
In a conveyor device composed of a carriage assembly including a linearly displaceable carriage, means associated with the carriage assembly and including at least one conveyor belt, a plurality of movable rollers mounted on the carriage and a plurality of fixeD rollers, for delivering individual items to a separator assembly, and a base support supporting the assemblies, the delivering means and the fixed rollers, the device presenting two end locations connected by the at least one conveyor belt, these end locations respectively defining the input and discharge points of the item delivering means, one of the end locations being located on the linearly displaceable carriage and the other end location being located on the base support, the forward reach of the conveyor belt extending from a first fixed roller on the base support at the other end location to a first movable roller on the carriage and from a second movable roller on the carriage to a further fixed roller on the base support, the return reach of the conveyor belt extending from the further fixed roller to two further movable rollers and back to the first fixed roller, each length of each belt reach between a movable roller and a fixed roller extending substantially parallel to the direction of carriage displacement, the conveyor belt being driven by one of the fixed rollers, the driving power for the carriage being derived, for displacement in at least one direction, from the driven conveyor belt, the improvement comprising a controllable drive connection disposed on said carriage between one of said movable rollers which engages said forward reach of said conveyor belt and one of said further movable rollers which engages said return reach of said conveyor belt, for selectively connecting said rollers between which it is disposed in driving relation to linearly displace said carriage, the ratio of the peripheral speeds of said rollers when they are so connected differing from a value of 1 in a sense which determines the direction of displacement of said carriage.
Claim 2
Dependent Claim
335 words
In a conveyor device composed of a carriage assembly including a linearly displaceable carriage, means associated with the carriage assembly and including at least one conveyor belt, a plurality of movable rollers mounted on the carriage and a plurality of fixeD rollers, for delivering individual items to a separator assembly, and a base support supporting the assemblies, the delivering means and the fixed rollers, the device presenting two end locations connected by the at least one conveyor belt, these end locations respectively defining the input and discharge points of the item delivering means, one of the end locations being located on the linearly displaceable carriage and the other end location being located on the base support, the forward reach of the conveyor belt extending from a first fixed roller on the base support at the other end location to a first movable roller on the carriage and from a second movable roller on the carriage to a further fixed roller on the base support, the return reach of the conveyor belt extending from the further fixed roller to two further movable rollers and back to the first fixed roller, each length of each belt reach between a movable roller and a fixed roller extending substantially parallel to the direction of carriage displacement, the conveyor belt being driven by one of the fixed rollers, the driving power for the carriage being derived, for displacement in at least one direction, from the driven conveyor belt, the improvement comprising a controllable drive connection disposed on said carriage between one of said movable rollers which engages said forward reach of said conveyor belt and one of said further movable rollers which engages said return reach of said conveyor belt, for selectively connecting said rollers between which it is disposed in driving relation to linearly displace said carriage, the ratio of the peripheral speeds of said rollers when they are so connected differing from a value of 1 in a sense which determines the direction of displacement of said carriage.
Claim 3
Dependent Claim
88 words
A conveying device as defined in claim 1, wherein said device is an intermediate stacker for flat items, further comprising another conveyor belt which forms with said one conveyor belt a mutually contacting conveyor belt segment disposed between the two end locations, said other conveyor belt extending from said discharge point in a direction opposite to the extent of said one conveyor belt from said discharge point to a movable roller and then to a fixed roller in a direction parallel to the displacement direction of said carriage.
Claim 4
Dependent Claim
30 words
A conveying device as defined in claim 1, wherein said drive connection comprises a clutch for selectively establishing the drive between said two movable rollers with which it is associated.
Claim 5
Dependent Claim
129 words
A conveying device as defined in claim 3, further comprising a separator assembly which includes a belt on which a stack of said items are carried away from said discharge point, wherein said carriage assembly further comprises sensing means disposed in the region to be occupied by a stack of such items for responding to the pressure exerted thereon by said stack and which controls the actuation of said clutch, said device further comprising drive means for driving said carriage toward said stack, and wherein the ratio of the peripheral speeds of said rollers associated with said connection when said clutch is actuated is such that said drive connection drives said carriage away from said stack, and said drive means and said belt of said separator assembly operate simultaneously.
Claim 6
Dependent Claim
75 words
A conveying device as defined in claim 3, wherein said drive connection further comprises a first pulley, means connecting said first pulley to said one of said two movable rollers, a second pulley, means connecting said second pulley to the other one of said two movable rollers, and means connecting said pulleys together, said pulleys being of respectively different diameters and said clutch connecting said second pulley to said one of said further movable rollers.
Claim 7
Dependent Claim
155 words
A conveying device as defined in claim 3, further comprising a separator assembly which includes a floor belt on which a stack of said items are carried away from said discharge point and which is driven when articleS are to be separated, wherein said carriage assembly further comprises sensing means disposed in the region to be occupied by a stack of such items for responding to the pressure exerted thereon by said stack when a predetermined pressure is exceeded, said device further comprising drive means for driving said carriage toward said stack, and the ratio of the peripheral speeds of said rollers associated with said connection when said clutch is actuated being such that said drive connection drives said carriage away from said stack, wherein said clutch is actuated when said sensing means responds and said drive means is actuated only when said sensing means does not respond, and the floor belt is being driven.
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) | 1975-09-12 | 1976-03-13 | 1976-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-12 | 1980-03-13 | 1980-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-12 | 1984-03-13 | 1984-09-12 | $7700.00 | Window Closed / Lapsed |