US3701413A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Roller flight conveyor chain
Assignee: REX-PT Inc A CORP OF
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Filing: 1970-09-14
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Granted: 1972-10-31
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Expires: 1990-09-14
Abstract
Abstract A roller flight conveyor includes conventional hexagonal shaft rolls mounted between a pair of carrier roller chains. The roller chain pins are provided with hexagonal bores to receive and provide mounting for the roll shaft ends and to secure the shafts against rotation.
Inventors
- 👤 James B Leahy
- 👤 Robert B Pierson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:38
CPC Classifications
B; B65; B65G; B65G17/00; B65G17/30; B65G17/38; B65G17/42; B65G17/24; B65G2201/00; B65G2201/02
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
105 words
In a roller flight conveyor chain having alternate interconnected roller links and pin links, each of the former comprising a pair of roller link plates interconnected by a pair of bushings and each of the latter comprising a pair of pin link plates interconnected by a pair of cylindrical pivot pins, the improved means for providing attachment for convenTional hexagonal roller flight shafts comprising axial bores in said pins dimensioned to slidably receive the hexagonal shafts and each of said bores being defined in part by at least one planar surface disposed to engage a corresponding one of the planar surfaces of a hexagonal shaft.
Claim 2
Dependent Claim
105 words
In a roller flight conveyor chain having alternate interconnected roller links and pin links, each of the former comprising a pair of roller link plates interconnected by a pair of bushings and each of the latter comprising a pair of pin link plates interconnected by a pair of cylindrical pivot pins, the improved means for providing attachment for convenTional hexagonal roller flight shafts comprising axial bores in said pins dimensioned to slidably receive the hexagonal shafts and each of said bores being defined in part by at least one planar surface disposed to engage a corresponding one of the planar surfaces of a hexagonal shaft.
Claim 3
Dependent Claim
11 words
The invention of claim 1 wherein said axial bores are hexagonal.
Claim 4
Dependent Claim
84 words
In a roller flight conveyor wherein a series of rolls are rotatably mounted on hexagonal shafts and each of said shafts is in turn attached by its respective ends to a pair of carrier chains to provide therebetween a flight of the conveyor, the improved means of attaching said shafts to said chains comprising carrier chain connecting pins having hexagonal bores therethrough adapted to receive the ends of said shafts and means associated with the shaft ends for securing said shafts in said bores.
Claim 5
Dependent Claim
84 words
In a roller flight conveyor wherein a series of rolls are rotatably mounted on hexagonal shafts and each of said shafts is in turn attached by its respective ends to a pair of carrier chains to provide therebetween a flight of the conveyor, the improved means of attaching said shafts to said chains comprising carrier chain connecting pins having hexagonal bores therethrough adapted to receive the ends of said shafts and means associated with the shaft ends for securing said shafts in said bores.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-10-31 | 1976-05-01 | 1976-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-31 | 1980-05-01 | 1980-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-31 | 1984-05-01 | 1984-10-31 | $7700.00 | Window Closed / Lapsed |