US4265171A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for conveying and dewatering wet coarse screenings debris
Assignee: Aqseptence Group GmbH
•
Filing: 1979-07-26
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Granted: 1981-05-05
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Expires: 1999-07-26
Abstract
Abstract Apparatus for conveying and dewatering wet coarse screenings debris comprises a drag chain conveyor having a conveying flight. A pressing unit is mounted above the conveying flight and exerts a downward pressure on the debris. A trough having a perforated bottom is mounted beneath the conveying flight in the vicinity of the pressing unit.
Inventors
- 👤 Oswald Busse
- 👤 Hugo Klesper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 11:25
CPC Classifications
B; B30; B30B; B30B9/00; B30B9/02
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
81 words
In apparatus for conveying and dewatering wet coarse screenings debris embodying a drag chain conveyor having a conveying flight, the improvement comprising, (a) a pressing unit having a pressure plate mounted above said conveying flight and exerting a downward pressure on said wet coarse screenings debris, (b) a trough having a perforated bottom disposed subjacent said conveying flight in the vicinity of said pressure plate, and (c) said pressure plate being of a width generally conforming to that of said trough.
Claim 2
Dependent Claim
81 words
In apparatus for conveying and dewatering wet coarse screenings debris embodying a drag chain conveyor having a conveying flight, the improvement comprising, (a) a pressing unit having a pressure plate mounted above said conveying flight and exerting a downward pressure on said wet coarse screenings debris, (b) a trough having a perforated bottom disposed subjacent said conveying flight in the vicinity of said pressure plate, and (c) said pressure plate being of a width generally conforming to that of said trough.
Claim 3
Dependent Claim
58 words
Apparatus for conveying and dewatering wet coarse screenings debris as defined in claim 1 in which said pressure plate is mounted for pivotal movement about a horizontal axis adjacent the end thereof at which said screenings debris passes therebeneath and is forced downward by pressure applying means adjacent the end thereof at which said screenings debris passes therefrom.
Claim 4
Dependent Claim
25 words
Apparatus for conveying and dewatering wet coarse screenings debris as defined in claim 2 in which said pressure applying means comprises a spring loaded unit.
Claim 5
Dependent Claim
53 words
Apparatus for conveying and dewatering wet coarse screenings debris as defined in claim 2 in which said pressure plate has an initial curved inlet section, an intermediate compression section approaching said drag chain in the direction of movement thereof at an acute angle, and an outlet section extending parallel to said drag chain.
Claim 6
Dependent Claim
36 words
Apparatus for conveying and dewatering wet coarse screenings debris as defined in claim 2, 3 or 4 in which stop means limits downward movement of said pressure plate at a small distance above said drag chain.
Claim 7
Dependent Claim
43 words
Apparatus for conveying and dewatering wet coarse screenings debris as defined in claim 4 in which a fixed deflecting plate is mounted in front of said curved inlet section of said pressure plate and extends tangentially to the curvature of said inlet section.
Claim 8
Dependent Claim
51 words
A conveyor for conveying and dewatering wet coarse screenings debris as defined in claim 4 in which said outlet section of said pressure plate is curved upwardly and the adjacent portion of said drag chain conveyor is also curved corresponding to the curvature of said outlet section of the pressure plate.
Claim 9
Dependent Claim
42 words
Apparatus for conveying and dewatering wet coarse screenings debris as defined in claim 1 in which a level probe is located in front of said pressing unit and is operatively connected to said drag chain conveyor to control the conveying speed thereof.
References Cited (Backward Citations)
US1883449A
Cited
US3106152A
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US3230866A
Cited
US3680476A
Cited
US3929065A
Cited
US4033253A
Cited
US4114531A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-05-04 | 1984-11-03 | 1985-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-05-04 | 1988-11-03 | 1989-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-05-04 | 1992-11-03 | 1993-05-05 | $7700.00 | Window Closed / Lapsed |