US3774751A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conveyor with selective intermediate dropout
Assignee: J Star Industries Inc
•
Filing: 1972-10-24
•
Granted: 1973-11-27
•
Expires: 1992-10-24
Abstract
Abstract A conveyor trough is provided with a longitudinally slidable intermediate section which, when moved to the open condition, permits conveyed material to drop out of the conveyor trough. The return flight of the conveyor is protected from the dropped-out material. Means provided for releasably locking the intermediate section in the closed condition as well as in the open condition.
Inventors
- 👤 D Bakker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:56
CPC Classifications
A; A01; A01K; A01K5/00; A01K5/02; A01K5/0208
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
185 words
In combination with an endless conveyor having an upper conveying flight and a return flight below the conveying flight, a first stationary trough section having a bottom pan over which the conveyor flight moves for advancing material through the trough, a second movable trough section normally extending from and forming a continuation of said first section and also having a bottom pan over which said flight advances material, said second trough section of a size and configuration to interfit with said first trough section upon movement of said second section toward said first section, a third stationary trough section forming a continuation of said second section, and an elongate support member above said return flight and below and aligned with said second trough section and extending substantially the full length of said second section adjacent the level of said bottom pan whereby to provide support for said conveyor when said second section is out of its normal position, and means for shifting the said second section toward said first section thereby to provide for material dropout from the trough on either side of said support.
Claim 2
Dependent Claim
185 words
In combination with an endless conveyor having an upper conveying flight and a return flight below the conveying flight, a first stationary trough section having a bottom pan over which the conveyor flight moves for advancing material through the trough, a second movable trough section normally extending from and forming a continuation of said first section and also having a bottom pan over which said flight advances material, said second trough section of a size and configuration to interfit with said first trough section upon movement of said second section toward said first section, a third stationary trough section forming a continuation of said second section, and an elongate support member above said return flight and below and aligned with said second trough section and extending substantially the full length of said second section adjacent the level of said bottom pan whereby to provide support for said conveyor when said second section is out of its normal position, and means for shifting the said second section toward said first section thereby to provide for material dropout from the trough on either side of said support.
Claim 3
Dependent Claim
29 words
The combination as in claim 1, said support member comprising an inverted trough-like structure with surfaces sloping oppositely downwardly and away from the center line of said trough sections.
Claim 4
Dependent Claim
48 words
The combination as in claim 1, including conveyor stabilizing members adjacent the third, stationary trough section and located on opposite sides of the trough center line and operable when necessary to maintain the conveyor in a laterally level condition prior to its entry into the said third section.
Claim 5
Dependent Claim
46 words
The combination as in claim 1, including guide members positioned adjacent said third trough section and operable to guide the confronting end of said second moveable trough section into alignment with said first and third sections upon movement of said second section toward said third section.
Claim 6
Dependent Claim
23 words
The combination as in claim 1, including means associated with said shifting means for releasably locking said second section in its normal position.
Claim 7
Dependent Claim
30 words
The combination as in claim 1, including means associated with said shifting means for releasably locking said second section in an open condition relative to said first and third sections.
References Cited (Backward Citations)
US3351180A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-11-26 | 1977-05-28 | 1977-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-26 | 1981-05-28 | 1981-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-26 | 1985-05-28 | 1985-11-27 | $7700.00 | Window Closed / Lapsed |