Patent US4662509A successfully refreshed from Google Patents.
US4662509A
Expired / Lapsed
US
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Chain conveyor
Assignee: Individual
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Filing: 1986-01-31
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Granted: 1987-05-05
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Expires: 2006-01-31
Abstract
Abstract The invention relates to a chain conveyor, provided with a drive chain and with carriers mounted on the chain, said carriers being mounted on the links of the chain. According to the invention each carrier consists of a rigid, rod-shaped element being at one end pivotably mounted on a chain link and being at a distance from the chain, pivotably connected to a pulling element which is pivotably connected at its other end to a chain link, being situated at a distance from the first-mentioned chain link, in such a manner that a triangular carrier is formed, and that the basis along the chain of adjacent triangular carriers partially overlap each other.
Inventors
- 👤 Stephanus W. Kaak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:35
CPC Classifications
B; B65; B65G; B65G17/00; B65G17/06; B65G17/063; B65G2201/00; B65G2201/02
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
120 words
A chain conveyor, provided with a drive chain and with carriers mounted on the chain, said carriers being mounted on the links of the chain, characterized in that each carrier (3, 3') consists of a rigid, rod-shaped element (6, 6') being at one end pivotably mounted on a chain link (2, 12) and being, at a distance from the chain, pivotably connected to a pulling element (7, 7') which is pivotably connected at its other end to a chain link, lying at a distance from the first-mentioned chain link, in such a manner that a triangular carrier (3, 3') is formed, and that the bases of adjacent triangular carriers (3, 3') along the chain (1, 11) partially overlap each other.
Claim 2
Dependent Claim
120 words
A chain conveyor, provided with a drive chain and with carriers mounted on the chain, said carriers being mounted on the links of the chain, characterized in that each carrier (3, 3') consists of a rigid, rod-shaped element (6, 6') being at one end pivotably mounted on a chain link (2, 12) and being, at a distance from the chain, pivotably connected to a pulling element (7, 7') which is pivotably connected at its other end to a chain link, lying at a distance from the first-mentioned chain link, in such a manner that a triangular carrier (3, 3') is formed, and that the bases of adjacent triangular carriers (3, 3') along the chain (1, 11) partially overlap each other.
Claim 3
Dependent Claim
21 words
A chain conveyor according to claim 1, characterized in that the pulling element (7, 7') is also a rigid, rod-shaped element.
Claim 4
Dependent Claim
53 words
A chain conveyor according to claim 1, characterized in that the pulling element (7) is flexible and the pivot (8") of the pulling element (7) on the chain (1, 11) precedes the pivot (8) of the rigid, rod-shaped element (6) on the chain (1, 11) in the direction of movement of the chain.
Claim 5
Dependent Claim
35 words
A chain conveyor according to claim 2, characterized in that the rigid, rod-shaped element (6') and the pulling element (7') have been interconnected at a distance from the chain (1) by a torsion spring (8a).
Claim 6
Dependent Claim
37 words
A chain conveyor according to claim 4, characterized in that the torsion spring (8a), the rigid, rod-shaped element (6) and the rigid pulling element (7') have been formed out of a single piece of the same material.
Claim 7
Dependent Claim
26 words
A chain conveyor according to claim 2, characterized in that the rigid, rod-shaped element (6) and the rigid pulling element (7) consists of oblong, metal strips.
Claim 8
Dependent Claim
51 words
A chain conveyor according to any of the preceding claims, characterized in that the pivot (8', 8a) between the rigid, rod-shaped element (6, 6') and the pulling element (7, 7') lies between the chain (2, 11) and the end of the rigid, rod-shaped element (6, 6') lying at a distance therefrom.
Claim 9
Dependent Claim
35 words
A chain conveyor according to claim 1, characterized in that the conveyor at the side of the carriers (3, 3') is supported at a distance from the chain by a guiding and carrying rail (15).
Claim 10
Dependent Claim
29 words
A chain conveyor according to claim 1, characterized in that additional, substantially sinusoidal or zig-zag-shaped elements (6a) of rod-shaped material have been mounted on the rigid, rod-shaped elements (6').
Claim 11
Dependent Claim
36 words
A chain conveyor according to claim 9, characterized in that the additional elements (6a) have been made of round rod-shaped material and have been mounted on the rigid, rod-shaped elements (6') by means of spot welding.
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) | 1990-05-04 | 1990-11-03 | 1991-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-05-04 | 1994-11-03 | 1995-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-05-04 | 1998-11-03 | 1999-05-05 | $7700.00 | Window Closed / Lapsed |