US3892706A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of processing refuse for conversion into shaped bodies
Assignee: Jetzer Engineering AG
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Filing: 1972-08-09
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Granted: 1975-07-01
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Expires: 1992-08-09
Abstract
Abstract Household, agricultural and forestry refuse is processed by subjecting it to aerobic decomposition in order to liberate its fiber content, whereupon the resulting product is sterilized, has its moisture content adjusted to a predetermined range and is converted into a mass of substantially dry, heterogeneous fibercontaining matter. This mass is then segregated into a plurality of different-size fractions with the coarsest fractions being separated from the remaining fractions which are admixed with a binder and shaped and hardened.
Inventors
- 👤 Raimund Jetzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:51
CPC Classifications
E; E04; E04C; E04C2/00; E04C2/02; E04C2/10; E04C2/16; B; B03; B03B; B03B9/00; B03B9/06; C; C04; C04B; C04B18/00; C04B18/04; C04B18/30; C08; C08K; C08K11/00; C08L; C08L61/00; C08L61/20; C08L97/00; C08L97/02; C08L99/00; Y; Y02; Y02W; Y02W30/00; Y02W30/50; Y02W30/91; Y10; Y10S; Y10S241/00; Y10S241/38
Claims Analysis
Total Claims: 33
Claim 1
Independent Claim
127 words
A METHOD OF PROCESSING REFUSE FOR CONVERSION INTO SHAPED BODIES, COMPRISING THE STEPS OF SUBJECTING A QUANTITY OF REFUSE CONTAINING LIQUID AND SOLID CONSTITUENTS TO AEROBIC DECOMPOSITION SO AS TO LIBERATE THE FIBER CONTENT OF SAID REFUSE, TREATING THE RESULTING PRODUCT TO SERILIZE SAID PRODUCT, ADJUST THE MOISTURE CONTENT OF SAID PRODUCT TO WITHIN A PREDETERMINED RANGE AND COVERT SAID PRODUCT INTO A MASS OF SUBSTANTIALLY DRY HETEROGENEOUS FIBER-CONTAINING MATTER, SEGREGATING SAID MASS INTO A PLURALITY OF FRACTIONS INCLUDING ONE FRACTION CONTAINING THE MATTER OF LARGEST PARTICLE SIZE, THE REMAINDER OF SAID FRACTIONS CONTAINING THE MATTER OF SMALLER PARTICLE SIZE AND INCLUDING A FIBROUS COMPONENT AND ANOTHER COMPONENT, SEPARATING SAID FIBROUS COMPONENT FROM SAID OTHER COMPONENT, AND CONVERTING SAID FIBROUS COMPONENT INTO AT LEAST ONE SHAPED BODY.
Claim 2
Independent Claim
127 words
A METHOD OF PROCESSING REFUSE FOR CONVERSION INTO SHAPED BODIES, COMPRISING THE STEPS OF SUBJECTING A QUANTITY OF REFUSE CONTAINING LIQUID AND SOLID CONSTITUENTS TO AEROBIC DECOMPOSITION SO AS TO LIBERATE THE FIBER CONTENT OF SAID REFUSE, TREATING THE RESULTING PRODUCT TO SERILIZE SAID PRODUCT, ADJUST THE MOISTURE CONTENT OF SAID PRODUCT TO WITHIN A PREDETERMINED RANGE AND COVERT SAID PRODUCT INTO A MASS OF SUBSTANTIALLY DRY HETEROGENEOUS FIBER-CONTAINING MATTER, SEGREGATING SAID MASS INTO A PLURALITY OF FRACTIONS INCLUDING ONE FRACTION CONTAINING THE MATTER OF LARGEST PARTICLE SIZE, THE REMAINDER OF SAID FRACTIONS CONTAINING THE MATTER OF SMALLER PARTICLE SIZE AND INCLUDING A FIBROUS COMPONENT AND ANOTHER COMPONENT, SEPARATING SAID FIBROUS COMPONENT FROM SAID OTHER COMPONENT, AND CONVERTING SAID FIBROUS COMPONENT INTO AT LEAST ONE SHAPED BODY.
Claim 3
Dependent Claim
38 words
A method as defined in claim 1, said remainder including at least two fractions; and wherein the step of separating said fibrous component from said other component is performed individually for each of the fractions of said remainder.
Claim 4
Dependent Claim
20 words
A method as defined in claim 1; and further comprising the step of isolating said one fraction from said remainder.
Claim 5
Dependent Claim
21 words
A method as defined in claim 1, wherein said other component comprises particles of higher specific gravity than said fibrous component.
Claim 6
Dependent Claim
93 words
A method as defined in claim 2, said other component including particles of higher specific gravity than said fibrous component; and wherein the step of separating said fibrous component from said other component comprises entraining the respective fractions separately with a flowing medium and conveying the entrained fractions vertically from a lower level to a higher level; and regulating the flow speed of said medium to be greater than the floating speed of the fibrous component of the respective fraction but less than the descending speed of the particles of the respective fraction.
Claim 7
Dependent Claim
23 words
A method as defined in claim 1, wherein the step of segregating comprises separating said mass into at least four of said fractions.
Claim 8
Dependent Claim
31 words
A method as defined in claim 1, further comprising the steps of subjecting said one fraction to mechanical particle-size reduction; and returning the thus reduced one fraction to the third-mentioned step.
Claim 9
Dependent Claim
36 words
A method as defined in claim 1; and further comprising the step of subjecting said mass to gravity-segregation for removal of particles of high specific gravity, prior to the step of segregating said mass into fractions.
Claim 10
Dependent Claim
16 words
A method as defined in claim 1, wherein the step of segregating comprises screening said mass.
Claim 11
Dependent Claim
34 words
A method as defined to claim 5, said fractions including a finest fraction; and wherein the medium for entraining said finest fraction is water, and the medium for entraining the other fractions is air.
Claim 12
Dependent Claim
26 words
A method as defined in claim 10; and further comprising the steps of recovering said finest fraction from the water, and drying the recovered finest fraction.
Claim 13
Dependent Claim
39 words
A method as defined in claim 1, wherein the step of segregating said mass comprises admitting said mass onto a series of superimposed screens with the mesh of each subjacent screen being smaller than that of the superimposed screen.
Claim 14
Dependent Claim
107 words
A method as defined in claim 12, said other component including particles of higher specific gravity than said fibrous component; and wherein the step of separating said fibrous component from said other component comprises passing a stream of air from below through said series of screens for entraining the finest one of said fractions, the flow speed of the air being selected to be greater than the floating speed of the fibrous component of said finest fraction but less than the descending speed of the particles of said finest fraction; and passing the air stream with the entrained fibrous component of said finest fraction into a cyclone.
Claim 15
Dependent Claim
87 words
A method as defined in claim 12, said other component including particles of higher specific gravity than said fibrous component; and wherein the step of separating said fibrous component from said other component comprises conveying a respective fraction separately in a vertical stream of flowing medium from a lower to a higher level; and regulating the flow speed of said medium to be greater than the floating speed of the fibrous component of the respective fraction but less than that of the particles of the respective fraction.
Claim 16
Dependent Claim
29 words
A method as defined in claim 14, said fractions including a finest fraction; and wherein said medium is water for said finest fraction, and air for the other fractions.
Claim 17
Dependent Claim
35 words
A method as defined in claim 15; further comprising the steps of separating said finest fraction from the water, drying the thus separated finest fraction, and returning the dried finest fraction to the third-mentioned step.
Claim 18
Dependent Claim
34 words
A method as defined in claim 1, wherein the step of converting said fibrous component comprises admixing the same with a binder material, and press-shaping the thus obtained substance to form shaped bodies therefrom.
Claim 19
Dependent Claim
15 words
A method as defined in claim 17, wherein said binder is a durable synthetic plastic.
Claim 20
Dependent Claim
15 words
A method as defined in claim 17, wherein said binder is a thermoplastic synthetic material.
Claim 21
Dependent Claim
14 words
A method as defined in claim 17, wherein said binder is a mineral binder.
Claim 22
Dependent Claim
19 words
A method as defined in claim 17, wherein the step of press-forming is carried out in a flat press.
Claim 23
Dependent Claim
19 words
A method as defined in claim 17, wherein the step of press-forming is carried out in an extrusion press.
Claim 24
Independent Claim
107 words
A method of processing refuse and converting it into shaped bodies, comprising the steps of subjecting a quantity of refuse composed of liquid and solid constituents to aerobic decomposition so as to liberate its fiber content; treating the resulting product to sterilize it, adjust its moisture content to at most 10%, and convert it into a substantially dry fibrous mass having a substantial fiber content; admixing said mass with a hardenable binder material; shaping the resulting mixture under pressure so as to compress and form it into a shaped body; and effecting hardening of said binder material to thereby convert said body into a rigid structural element.
Claim 25
Independent Claim
107 words
A method of processing refuse and converting it into shaped bodies, comprising the steps of subjecting a quantity of refuse composed of liquid and solid constituents to aerobic decomposition so as to liberate its fiber content; treating the resulting product to sterilize it, adjust its moisture content to at most 10%, and convert it into a substantially dry fibrous mass having a substantial fiber content; admixing said mass with a hardenable binder material; shaping the resulting mixture under pressure so as to compress and form it into a shaped body; and effecting hardening of said binder material to thereby convert said body into a rigid structural element.
Claim 26
Dependent Claim
33 words
A method as defined in claim 23, wherein the adjustment of the moisture content comprises adjusting said moisture content to be less than 10%; and wherein said binder material is a synthetic resin.
Claim 27
Dependent Claim
16 words
A method as defined in claim 23, wherein said binder material is a synthetic resin material.
Claim 28
Dependent Claim
26 words
A method as defined in claim 23, wherein the step of treating said product comprises heating the same to a temperature not substantially lower than 80*C.
Claim 29
Dependent Claim
23 words
A method as defined in claim 23, wherein the step of effecting hardening of said binder material comprises subjecting said body to heat.
Claim 30
Dependent Claim
16 words
A method as defined in claim 23, wherein said binder material is an organic binder material.
Claim 31
Dependent Claim
16 words
A method as defined in claim 23, wherein said binder material is an inorganic binder material.
Claim 32
Dependent Claim
27 words
A method as defined in claim 23; and further comprising the step of admixing with said fibrous mass a color substance Prior to shaping of said mixture.
Claim 33
Dependent Claim
34 words
A method as defined in claim 23; and further comprising the step of adding to said mixture, prior to shaping thereof, at least one substance from the group composed of insecticides, fungicides and combustion-retardants.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-06-30 | 1978-12-30 | 1979-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-30 | 1982-12-30 | 1983-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-30 | 1986-12-30 | 1987-07-01 | $7700.00 | Window Closed / Lapsed |