US3577938A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Incinerators
Assignee: SUPERBURN SYSTEMS Ltd
•
Filing: 1969-05-08
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Granted: 1971-05-11
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Expires: 1989-05-08
Abstract
Abstract In a method of disposing of town refuse the refuse is burnt in an incinerator whilst supported on a nonfluidized mass of refractory granular material and the granular material is periodically fluidized to allow the noncombustible content of the refuse to pass therethrough and be removed from the incinerator through an outlet. The mass of refractory granular material serves as a valve for permitting the noncombustible content of the refuse which collects on the surface of the granular material to pass therethrough and be removed from the incinerator.
Inventors
- 👤 Duncan Ronald Muirhead
- 👤 John Francis Richardson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:25
CPC Classifications
F; F23; F23G; F23G5/00; F23G5/30; F23G2203/00; F23G2203/50; F23G2203/504
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
114 words
A method of disposing of refuse which comprises the steps of providing a mass of nonfluidized refractory granular material above a closeable opening in the base of an incinerator, depositing an initial load of refuse onto the mass of granular material in the incinerator, igniting and burning the combustible content of said refuse while supported on the granular material, introducing further refuse into the incinerator and burning said further refuse while supported on the granular material, periodically fluidizing said mass of granular material to allow the noncombustible content of the refuse to pass therethrough to a position adjacent to said closeable opening, and periodically removing said noncombustible content of the refuse through said opening.
Claim 2
Independent Claim
114 words
A method of disposing of refuse which comprises the steps of providing a mass of nonfluidized refractory granular material above a closeable opening in the base of an incinerator, depositing an initial load of refuse onto the mass of granular material in the incinerator, igniting and burning the combustible content of said refuse while supported on the granular material, introducing further refuse into the incinerator and burning said further refuse while supported on the granular material, periodically fluidizing said mass of granular material to allow the noncombustible content of the refuse to pass therethrough to a position adjacent to said closeable opening, and periodically removing said noncombustible content of the refuse through said opening.
Claim 3
Dependent Claim
25 words
A method of disposing of refuse as claimed in claim 1 in which said mass of refractory granular material is fluidized by passing air therethrough.
Claim 4
Dependent Claim
39 words
A method of disposing of refuse as claimed in claim 1 in which the opening is opened and the granular material is fluidized simultaneously so that the granular material flushes the noncombustible content of the refuse through said opening.
Claim 5
Dependent Claim
127 words
An incinerator for burning refuse comprising a container which defines a first opening in the lower part thereof, movable means for closing said opening, a layer of noncompactible, noncombustible bodies in the container extending to a level above the level of said opening, a bed of refractory granular material in the container and supported on said layer, a second opening defined by said container above the level of the surface of the bed through which refuse is introducible into the container, means for introducing air into the container above the level of the surface of the bed to support combustion of the combustible content of the refuse, and means for passing a gaseous medium through said layer of noncombustible bodies into the bed to fluidize the bed.
Claim 6
Dependent Claim
127 words
An incinerator for burning refuse comprising a container which defines a first opening in the lower part thereof, movable means for closing said opening, a layer of noncompactible, noncombustible bodies in the container extending to a level above the level of said opening, a bed of refractory granular material in the container and supported on said layer, a second opening defined by said container above the level of the surface of the bed through which refuse is introducible into the container, means for introducing air into the container above the level of the surface of the bed to support combustion of the combustible content of the refuse, and means for passing a gaseous medium through said layer of noncombustible bodies into the bed to fluidize the bed.
Claim 7
Dependent Claim
21 words
An incinerator as claimed in claim 4 comprises means for shredding the refuse prior to it being introduced into the container.
Claim 8
Dependent Claim
15 words
An incinerator as claimed in claim 4 in which the refractory granular material is alumina.
Claim 9
Dependent Claim
23 words
An incinerator as claimed in claim 4 in which the container is of tubular form and is arranged with its longitudinal axis vertical.
Claim 10
Dependent Claim
37 words
An incinerator as claimed in claim 4 in which the base of the container defines said first opening and is of inverted frustoconical form and the noncompactible, noncombustible bodies are arranged in the base of the container.
References Cited (Backward Citations)
US3397657A
Cited
US3411465A
Cited
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 |