US3669242A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Roller conveyor
Assignee: Jacques Berthelat Et Fils SA E
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Filing: 1970-11-13
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Granted: 1972-06-13
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Expires: 1990-11-13
Abstract
Abstract A conveyor constituted of a plurality of successive series of identical rollers, each series being associated with a laterally extending feeler for controlling rollers adapted to drive rollers of an upper series in the direction of movement of a load. Movement of the rollers is predicated upon actuation of a feeler by a load so as to move the latter in predetermined indexed relationship on the conveyor.
Inventors
- 👤 Robert J Berthelat
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:17
CPC Classifications
B; B65; B65G; B65G47/00; B65G47/22; B65G47/26; B65G47/261
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
237 words
Roller conveyor of the type comprising drive rollers, secondary rollers, a continuous driving belt or the like and pivotal load feeler means, said drive rollers being frictionally rotated by said secondary rollers which are, in turn, frictionally driven by said continuous driving belt, said pivotal load feeler means being mounted at regular intervals in the path of movement of loads on the conveyor in such a manner that the loads may, during their movement on the conveyor, displace the feelers from their normal position against the action of means adapted to return the feelers to their initial position, the spacing between successive feelers being greater than the greatest dimension of the loads in the conveying direction, movement transmitting means connecting each of the feelers to the secondary rollers which rotate the drive rollers located upstream of the preceding feeler in the direction of displacement of the loads, in such a manner as to disengage the upstream secondary rollers from the associated drive rollers and from the said drive belt, when the feeler is displaced from its normal position by a load, each feeler comprising a horizontal lever mounted for pivoting in a horizontal plane and extending transversally above the surface of the drive rollers so as to have its inner free end normally extend into the path of travel of the loads, said lever being pivotally mounted by its outer end on the framework of the conveyor.
Claim 2
Dependent Claim
237 words
Roller conveyor of the type comprising drive rollers, secondary rollers, a continuous driving belt or the like and pivotal load feeler means, said drive rollers being frictionally rotated by said secondary rollers which are, in turn, frictionally driven by said continuous driving belt, said pivotal load feeler means being mounted at regular intervals in the path of movement of loads on the conveyor in such a manner that the loads may, during their movement on the conveyor, displace the feelers from their normal position against the action of means adapted to return the feelers to their initial position, the spacing between successive feelers being greater than the greatest dimension of the loads in the conveying direction, movement transmitting means connecting each of the feelers to the secondary rollers which rotate the drive rollers located upstream of the preceding feeler in the direction of displacement of the loads, in such a manner as to disengage the upstream secondary rollers from the associated drive rollers and from the said drive belt, when the feeler is displaced from its normal position by a load, each feeler comprising a horizontal lever mounted for pivoting in a horizontal plane and extending transversally above the surface of the drive rollers so as to have its inner free end normally extend into the path of travel of the loads, said lever being pivotally mounted by its outer end on the framework of the conveyor.
Claim 3
Dependent Claim
166 words
A roller conveyor according to claim 1 wherein each feeler is constituted by a horizontal lever located transversely above the surface of the drive belt, in such a way that its inner end extends into the path of travel of the loads, the lever being pivotally mounted on the framework of the conveyor and being connected by control rods through the intermediary of a movement reversing device to a connecting-rod supporting the spindles of a series of secondary rollers driving drive rollers, in such a way that the secondary rollers are pushed back when the corresponding feeler is displaceD from its normal position and cease to drive the corresponding drive rollers, whether they cease to be in contact with the drive rollers in the case where there is no means of connection between their respective spindles, or whether they cease to be in contact with the driving belt in the case where the spindles of the secondary rollers and of the corresponding drive rollers are connected.
Claim 4
Dependent Claim
72 words
Roller conveyor according to claim 1, wherein said movement transmitting means are constituted of a control rod driven by the feeling lever, a movement reversing device connecting said control rod to a connecting rod supporting the spindles of the secondary rollers which drive the driving rollers, said secondary rollers being pushed back when the corresponding feeling lever is displaced from its normal position, and to discontinue drive of the associated drive rollers.
Claim 5
Dependent Claim
66 words
Roller conveyor according to claim 2, the lateral feeling levers being located on each side of the conveyor symmetrically relative to its longitudinal axis, said lateral feeling levers being paired to move together whereby when a load offset from the center line of the conveyor displaces one of the feeling levers from its normal position, the associated feeling lever is concurrently displaced from its normal position.
References Cited (Backward Citations)
US3285391A
Cited
FR1543506A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-13 | 1975-12-13 | 1976-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-13 | 1979-12-13 | 1980-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-13 | 1983-12-13 | 1984-06-13 | $7700.00 | Window Closed / Lapsed |