US3578149A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Belt conveyors
Assignee: SOLAR THOMSON ENG CO Ltd
•
Filing: 1969-12-01
•
Granted: 1971-05-11
•
Expires: 1989-12-01
Abstract
Abstract A belt conveyor having an endless carrier belt, and endless drive belt in frictional driving engagement with the inner surface of the carrier belt, and support means traveling with the carrier belt, and support along the load carrying flight thereof for supporting the carrier belt in a troughed configuration.
Inventors
- 👤 Charles Thomson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:08
CPC Classifications
B; B65; B65G; B65G23/00; B65G23/02; B65G23/14; B65G17/00; B65G17/02; B65G17/30; B65G17/38; B65G17/42; B65G2201/00; B65G2201/04
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
92 words
Belt conveyor apparatus comprising an endless carrier belt arranged to travel along a flight for carrying a load therealong, an endless drive belt arranged to drive the carrier belt by frictional engagement with a substantial portion of the inner surface of the carrier belt along the load-carrying flight thereof, said carrier belt comprising a central portion and edge portions hingedly connected to the central portion, and substantially continuous support means extending between said edge portions and the drive belt and supporting said edge portions on the drive belt in an upwardly-hinged position.
Claim 2
Dependent Claim
92 words
Belt conveyor apparatus comprising an endless carrier belt arranged to travel along a flight for carrying a load therealong, an endless drive belt arranged to drive the carrier belt by frictional engagement with a substantial portion of the inner surface of the carrier belt along the load-carrying flight thereof, said carrier belt comprising a central portion and edge portions hingedly connected to the central portion, and substantially continuous support means extending between said edge portions and the drive belt and supporting said edge portions on the drive belt in an upwardly-hinged position.
Claim 3
Dependent Claim
62 words
Belt conveyor apparatus according to claim 1 wherein the support means comprise ribs on said edge portions which engage ribs on the drive belt, said ribs on the drive belt preventing lateral movement of the ribs on the edge portions away from one another and thereby enabling the ribs on the Edge portions to support said edge portions in an upwardly-hinged position.
Claim 4
Dependent Claim
29 words
Belt conveyor apparatus according to claim 1 wherein reinforcing elements are provided in said central portions and edge portions, which elements permit of hinging movement of the edge portions.
Claim 5
Dependent Claim
35 words
Belt conveyor apparatus according to claim 3 wherein a fabric web is provided in the carrier belt above and below the reinforcing elements in the central portion and the reinforcing elements in the edge portions.
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) | 1974-05-10 | 1974-11-09 | 1975-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-10 | 1978-11-09 | 1979-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-10 | 1982-11-09 | 1983-05-11 | $7700.00 | Window Closed / Lapsed |