US4028189A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Procedure and device for rapid composting of organic waste
Assignee: Kvaerner Brug AS
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Filing: 1975-08-26
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Granted: 1977-06-07
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Expires: 1995-08-26
Abstract
Abstract Organic waste is composted whereby it is brought into repeated sliding layer contact with an air current. This contact is provided for in an inclined, rotating cylinder.
Inventors
- 👤 Bjorn Fagerhaug
- 👤 Karl Oberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 07:37
CPC Classifications
C; C05; C05F; C05F17/00; C05F17/90; C05F17/921; C05F17/929; Y; Y02; Y02P; Y02P20/00; Y02P20/10; Y02P20/129; Y02P20/141; Y02P20/145; Y02W; Y02W30/00; Y02W30/40
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
121 words
A procedure for rapid composting of organic waste substances, comprising rotating a cylinder about its axis with its axis substantially horizontal, introducing waste substance into one end of said cylinder and withdrawing waste substance from the other end of said cylinder thereby to establish in said cylinder a mass of said waste substance that has an exposed upper surface within the cylinder whereby upon rotation of the cylinder, portions of the waste substance slide on said surface, introducing air into said mass from within said mass from locations distributed along the length of said mass in said cylinder and below said surface, and withdrawing gas from within said cylinder above said surface from locations distributed along the length of said cylinder.
Claim 2
Dependent Claim
121 words
A procedure for rapid composting of organic waste substances, comprising rotating a cylinder about its axis with its axis substantially horizontal, introducing waste substance into one end of said cylinder and withdrawing waste substance from the other end of said cylinder thereby to establish in said cylinder a mass of said waste substance that has an exposed upper surface within the cylinder whereby upon rotation of the cylinder, portions of the waste substance slide on said surface, introducing air into said mass from within said mass from locations distributed along the length of said mass in said cylinder and below said surface, and withdrawing gas from within said cylinder above said surface from locations distributed along the length of said cylinder.
Claim 3
Dependent Claim
42 words
A procedure as claimed in claim 1, in which said air is introduced into said mass from a multiplicity of points spaced lengthwise along said cylinder, and said gas is withdrawn at a multiplicity of points spaced apart lengthwise along said cylinder.
Claim 4
Dependent Claim
44 words
A procedure according to claim 1, and introducing said waste substance into one end of said cylinder and withdrawing said waste substance from the other end of said cylinder, and spraying water on said waste substance only adjacent said other end of said cylinder.
Claim 5
Independent Claim
97 words
A device for rapid composting of organic waste substances, comprising a hollow cylinder, means for rotating said cylinder about a substantially horizontal axis, means for introducing waste substance into one end of said cylinder, means for withdrawing waste substance from the other end of said cylinder, means for introducing air into a mass of waste substance in said cylinder from a multiplicity of locations distributed along a central portion of the cylinder, and means for withdrawing gas from a multiplicity of locations distributed lengthwise along an upper portion of said cylinder above said locations of air introduction.
Claim 6
Independent Claim
97 words
A device for rapid composting of organic waste substances, comprising a hollow cylinder, means for rotating said cylinder about a substantially horizontal axis, means for introducing waste substance into one end of said cylinder, means for withdrawing waste substance from the other end of said cylinder, means for introducing air into a mass of waste substance in said cylinder from a multiplicity of locations distributed along a central portion of the cylinder, and means for withdrawing gas from a multiplicity of locations distributed lengthwise along an upper portion of said cylinder above said locations of air introduction.
Claim 7
Dependent Claim
23 words
A device according to claim 4, and means for spraying water on said waste substance only adjacent said other end of said cylinder.
Claim 8
Dependent Claim
42 words
A device according to claim 4, said gas withdrawal means comprising at least one pipe extending lengthwise along an upper portion of the interior of said cylinder having a multiplicity of openings therethrough for the inlet of said gas into said pipe.
Claim 9
Dependent Claim
18 words
A device according to claim 6, said at least one pipe extending substantially full length of said cylinder.
Claim 10
Dependent Claim
42 words
A device according to claim 7, said air introducing means comprising a central pipe that extends axially of said cylinder and has a multiplicity of openings therethrough spaced apart along the length thereof for the outward passage of air into said mass.
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) | 1980-06-06 | 1980-12-06 | 1981-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-06-06 | 1984-12-06 | 1985-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-06-06 | 1988-12-06 | 1989-06-07 | $7700.00 | Window Closed / Lapsed |