US4238028A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flight conveyor
Assignee: Joy MM Delaware Inc
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Filing: 1977-07-28
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Granted: 1980-12-09
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Expires: 1997-07-28
Abstract
Abstract A flight conveyor and more particularly a flight conveyor including an improved means for attaching the flights to the conveyor chain.
Inventors
- 👤 Robert C. Lake
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 09:38
CPC Classifications
B; B65; B65G; B65G19/00; B65G19/18; B65G19/22; B65G19/24
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
190 words
In a flight conveyor having a plurality of spaced pairs of axially aligned elongated flights which extend outwardly from opposite sides of chain connecting portions of a center driven conveyor chain, the improvement comprising: said flights having flight connecting portions adjacent the inner axial ends thereof; a pair of elongated transversely spaced connecting pins each of which extends in the longitudinal direction of said flights and communicate between a respective chain connecting portion and said flight connecting portions of a pair of said flights to secure said pair of flights to said chain connecting portions; the respective longitudinal axes of each of said connecting pins extending at a common elevation and in a common horizontal plane; at least a third elongated connecting pin rigidly communicating between said flight connecting portions of said pair of said flights; and the longitudinal axis of said third connecting portion being parallel to and at an elevation higher than said axes of said first mentioned connecting pins and the lowermost surface of said third connecting portion being at an elevation higher than the uppermost surface of said chain connecting portions whereby a pocket is formed.
Claim 2
Dependent Claim
190 words
In a flight conveyor having a plurality of spaced pairs of axially aligned elongated flights which extend outwardly from opposite sides of chain connecting portions of a center driven conveyor chain, the improvement comprising: said flights having flight connecting portions adjacent the inner axial ends thereof; a pair of elongated transversely spaced connecting pins each of which extends in the longitudinal direction of said flights and communicate between a respective chain connecting portion and said flight connecting portions of a pair of said flights to secure said pair of flights to said chain connecting portions; the respective longitudinal axes of each of said connecting pins extending at a common elevation and in a common horizontal plane; at least a third elongated connecting pin rigidly communicating between said flight connecting portions of said pair of said flights; and the longitudinal axis of said third connecting portion being parallel to and at an elevation higher than said axes of said first mentioned connecting pins and the lowermost surface of said third connecting portion being at an elevation higher than the uppermost surface of said chain connecting portions whereby a pocket is formed.
Claim 3
Dependent Claim
15 words
A flight conveyor as specified in claim 1 including only a single third connecting pin.
Claim 4
Dependent Claim
36 words
A flight conveyor as specified in claim 1 wherein said flight connecting portions include an integral upwardly extending portion and said third connecting pin communicates between said upwardly extending portions of said pairs of said flights.
Claim 5
Dependent Claim
29 words
A flight conveyor as specified in claim 3 wherein said third connecting pin is welded to said upwardly extending portions adjacent respective axial ends of said third connecting pin.
Claim 6
Dependent Claim
31 words
A flight conveyor as specified in claim 3 wherein each of said upwardly extending portions include an upwardly open groove therein and said third connecting pin is seated within said groove.
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) | 1983-12-09 | 1984-06-09 | 1984-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-12-09 | 1988-06-09 | 1988-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-12-09 | 1992-06-09 | 1992-12-09 | $7700.00 | Window Closed / Lapsed |