Patent US3854575A successfully refreshed from Google Patents.
US3854575A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conveyor belt system
Assignee: Individual
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Filing: 1973-10-30
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Granted: 1974-12-17
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Expires: 1993-10-30
Abstract
Abstract An endless chain belt conveyor system for transporting articles along a curved path, the system including a trackway having a curved outer rail. Operating along the trackway is an endless belt supported between a driven roll and an idler roll, the belt being constituted by a continuous chain of interlinked cross rods. A series of roller fixtures are attached at spaced positions to the cross rods at the outer margin of the belt, the rollers engaging and rolling against the outside surface of the outer rail, whereby stresses produced when the belt negotiates the curved path are broadly distributed along the outer rail to afford a smooth, effortless belt movement.
Inventors
- 👤 J Fraioli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:04
CPC Classifications
B; B65; B65G; B65G15/00; B65G15/02; B65G15/30; B65G15/54; B65G17/00; B65G17/06; B65G17/08; B65G17/086; B65G17/30; B65G17/38; B65G17/42; B65G17/44; B65G2201/00; B65G2201/02
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
146 words
An endless chain belt conveyor system for transporting articles along an arcuate path, said system comprising: A. a trackway extending along said arcuate path and having an outer rail formed by a curved strip, B. an endless belt movable along said trackway and capable of turning to follow said path, the outer margin of said belt overhanging said rail and riding thereon, and C. roller mounted on the underside of the overhang of said belt at spaced positions therealong, the upper side of the overhang being free of obstruction to provide an uninterrupted belt surface which may be lifted relative to said rail, said rollers engaging and rolling along the outer surface of said rail and being tracked thereby whereby the stresses imposed by said belt in the course of turning movement are distributed along said rail which also functions as a bed for said belt.
Claim 2
Dependent Claim
146 words
An endless chain belt conveyor system for transporting articles along an arcuate path, said system comprising: A. a trackway extending along said arcuate path and having an outer rail formed by a curved strip, B. an endless belt movable along said trackway and capable of turning to follow said path, the outer margin of said belt overhanging said rail and riding thereon, and C. roller mounted on the underside of the overhang of said belt at spaced positions therealong, the upper side of the overhang being free of obstruction to provide an uninterrupted belt surface which may be lifted relative to said rail, said rollers engaging and rolling along the outer surface of said rail and being tracked thereby whereby the stresses imposed by said belt in the course of turning movement are distributed along said rail which also functions as a bed for said belt.
Claim 3
Dependent Claim
74 words
An endless chain belt conveyor as set forth in claim 1, wherein said belt is formed by a continuous train of interlinked cross rods and each roller is attached to a pair of cross rods formed by a single wire bent to define a bight, said roller being mounted for rotation on a bracket having a pair of bores to receive the pair of rods whereby said bracket is positioned to abut the bight.
Claim 4
Dependent Claim
45 words
An endless belt as set forth in claim 2, wherein said cross rods diverge one degree from each other whereby the spacing between adjoining rods increases progressively from the inner end to the outer end, and a plurality of slat-like links pivotally interconnecting said rods.
Claim 5
Dependent Claim
23 words
An endless belt as set forth in claim 2, wherein said rods are interconnected by pickets having slots therein to receive said rods.
Claim 6
Dependent Claim
18 words
An endless belt as set forth in claim 2, wherein said rods are interconnected by interwoven spiral wires.
References Cited (Backward Citations)
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Cited
US2234537A
Cited
US2872023A
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US3217861A
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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) | 1977-12-16 | 1978-06-17 | 1978-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-16 | 1982-06-17 | 1982-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-16 | 1986-06-17 | 1986-12-17 | $7700.00 | Window Closed / Lapsed |