US3706286A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conveyor systems
Assignee: Jeumont Schneider SA
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Filing: 1970-12-31
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Granted: 1972-12-19
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Expires: 1990-12-31
Abstract
Abstract The invention is a conveying system formed of a first track having several load-bearing trucks movably mounted thereon, a second track which supports a driving chain continuously movable thereon and having several first dogs depending from the chain. The load-bearing trucks have a first abutment device which is engaged by the first dogs of the driving chain to be driven by it. There is a mechanism, on the trucks for disengaging the first abutment device from the first dogs so as to free the loadbearing trucks. The system also comprises a third track that carries at least one driving vehicle movable thereon at a speed greater than that of the load-bearing trucks and that has a second dog. The load-bearing trucks carry a second abutment device which can be hit by the second dog to actuate the disengaging mechanism and thus free the first abutment device from the dogs of the driving chain and allow the load-bearing trucks to be moved at a greater speed by the driving vehicle of the third track. The first abutment device of each load-bearing truck also has a provision whereby it may again be engaged by the first dogs of the driving chain if the speed of the load-bearing truck falls below that of the driving chain.
Inventors
- 👤 Pierre Ricaud
- 👤 Simon Cynober
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 05:47
CPC Classifications
B; B61; B61B; B61B10/00; B61B10/02; B61B10/025
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
162 words
A conveyor system having a first track on which load-bearing trucks move; a second track for supporting a moving driving chain; a plurality of first dogs arranged on the driving chain; first abutment means arranged on the load-bearing trucks against which the first dogs can engage for propelling the trucks at the speed of the chain; means for disengaging the first dogs from the first abutment means; a third track carrying one or more second dogs; second abutment means provided on the load-bearing trucks for engaging the second dog or dogs, said second abutment means causing the operation of the means for disengaging the first abutment means from the first dogs when acted upon by the second dogs so that the truck can be propelled by the second dogs at a rate faster than the driving chain, and means enabling the engagement of the trucks with the driving chain when the speed of the trucks falls below that of the first dogs.
Claim 2
Dependent Claim
162 words
A conveyor system having a first track on which load-bearing trucks move; a second track for supporting a moving driving chain; a plurality of first dogs arranged on the driving chain; first abutment means arranged on the load-bearing trucks against which the first dogs can engage for propelling the trucks at the speed of the chain; means for disengaging the first dogs from the first abutment means; a third track carrying one or more second dogs; second abutment means provided on the load-bearing trucks for engaging the second dog or dogs, said second abutment means causing the operation of the means for disengaging the first abutment means from the first dogs when acted upon by the second dogs so that the truck can be propelled by the second dogs at a rate faster than the driving chain, and means enabling the engagement of the trucks with the driving chain when the speed of the trucks falls below that of the first dogs.
Claim 3
Dependent Claim
21 words
A conveyor system according to claim 1 including a damping system disposed between each load-bearing truck and its second abutment means.
Claim 4
Dependent Claim
30 words
A conveyor system according to claim 1, wherein each of the second dogs are mounted on a respective second truck which is arranged to be propelled along the third track.
Claim 5
Dependent Claim
14 words
A conveyor system according to claim 3, wherein the second trucks are electro-magnetically propelled.
Claim 6
Dependent Claim
34 words
A conveyor system according to claim 4, wherein each second truck carries a pair of field magnets on either side thereof which are arranged to form air-gaps with armatures arranged along the third track.
Claim 7
Dependent Claim
55 words
A conveyor system according to claim 1, wherein each first truck carries a pair of pivotally arranged inwardly facing abutment members constituting the first abutment means, arranged so that on engagement with the first dogs one is depressed and the other is propellingly engaged therewith accorDing to relative motion between the truck and the chain.
Claim 8
Dependent Claim
75 words
A conveyor system according to claim 6, wherein that abutment member which would be propellingly engaged by a first dog when the speed of the truck is greater than the speed of the chain is, when the truck is propelled by a second dog, associated with the disengaging means whereby it is depressed to prevent such engagement and thus permits the truck to continue to travel at a faster rate than that of the chain.
Claim 9
Dependent Claim
43 words
A conveyor system according to claim 7, wherein said second abutment means can be moved by the second dogs against the action of a spring to cause the disengaging means to depress the abutment member to prevent the engagement by the first dogs.
Claim 10
Dependent Claim
54 words
A conveyor system according to claim 8, wherein the disengaging means includes a bell cranked lever which is rocked about a pivot by the spring loaded second abutment means acting on one arm of the bell cranked lever, whereas the end of the other arm is connected to abutment member through a further lever.
Claim 11
Dependent Claim
225 words
A conveyor system comprising: a. a first track and load-bearing trucks movably mounted thereon; b. a second track and a driving chain movably mounted thereon, said chain having a plurality of first dogs spacedly mounted thereon; c. first abutment means on said load-bearing trucks disposed for engagement by said first dogs to be driven by and at the speed of said chain; d. means on said load-bearing trucks for releasing said first dogs from engagement with said first abutment means; e. a third track and at least one second truck having one second dog for alternate driving of said load-bearing trucks, said second truck mounted on said third track for movement at a speed normally greater than that of said driving chain; f. second abutment means on said load-bearing trucks disposed for engagement by said second dog and for actuation of said releasing means; g. wherein said second abutment means is intended to actuate said releasing means when abutting said second dog to free said first dogs from said first abutment means whereby said load-bearing trucks can be propelled by said second truck, and h. wherein said first abutment means include reengagement means suitable to cause reengagement of said load-bearing trucks by said first dogs whenever the speed of said load-bearing trucks when propelled by said second truck falls below that of said driving chain.
Claim 12
Dependent Claim
225 words
A conveyor system comprising: a. a first track and load-bearing trucks movably mounted thereon; b. a second track and a driving chain movably mounted thereon, said chain having a plurality of first dogs spacedly mounted thereon; c. first abutment means on said load-bearing trucks disposed for engagement by said first dogs to be driven by and at the speed of said chain; d. means on said load-bearing trucks for releasing said first dogs from engagement with said first abutment means; e. a third track and at least one second truck having one second dog for alternate driving of said load-bearing trucks, said second truck mounted on said third track for movement at a speed normally greater than that of said driving chain; f. second abutment means on said load-bearing trucks disposed for engagement by said second dog and for actuation of said releasing means; g. wherein said second abutment means is intended to actuate said releasing means when abutting said second dog to free said first dogs from said first abutment means whereby said load-bearing trucks can be propelled by said second truck, and h. wherein said first abutment means include reengagement means suitable to cause reengagement of said load-bearing trucks by said first dogs whenever the speed of said load-bearing trucks when propelled by said second truck falls below that of said driving chain.
References Cited (Backward Citations)
US3451352A
Cited
US3602148A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-12-19 | 1976-06-19 | 1976-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-19 | 1980-06-19 | 1980-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-19 | 1984-06-19 | 1984-12-19 | $7700.00 | Window Closed / Lapsed |