US4243393A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coal article
Assignee: Banner Engineering Corp
•
Filing: 1977-10-13
•
Granted: 1981-01-06
•
Expires: 1997-10-13
Abstract
Abstract Coal is restructured by extrusion into a tube like article that has a hollow core, which may contain igniter material to facilitate ignition of the coal. The hollow core and possibly other deformities, such as ribs, flutes or the like in the inner or outer walls of the tube-like article and/or slotted, circular or like openings through the tube wall artifically create an environment that enhances the burning characteristics in a relatively open or uncontrolled environment that is ordinarily hostile to the burning of coal. The article may be burned according to a novel process that creates coke.
Inventors
- 👤 Miles W. Christian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 03:48
CPC Classifications
C; C10; C10L; C10L5/00; C10L5/02; C10L5/34; C10L5/36
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
57 words
A restructured coal article comprising a tube-like formation of coal, said tube-like formation of coal having a hollow core and relatively easily burnable igniter material at least substantially filling said core, said igniter material being capable of producing sufficient heat to ignite the article substantially completely along the inner surface of the wall circumscribing said hollow core.
Claim 2
Dependent Claim
57 words
A restructured coal article comprising a tube-like formation of coal, said tube-like formation of coal having a hollow core and relatively easily burnable igniter material at least substantially filling said core, said igniter material being capable of producing sufficient heat to ignite the article substantially completely along the inner surface of the wall circumscribing said hollow core.
Claim 3
Dependent Claim
34 words
A restructured coal article comprising a cylindrical tube-like formation of coal having a generally flat bottom end capable of supporting the article on a flat support in a vertically extending direction for combustion thereof.
Claim 4
Dependent Claim
34 words
A restructured coal article comprising a cylindrical tube-like formation of coal having a generally flat bottom end capable of supporting the article on a flat support in a vertically extending direction for combustion thereof.
Claim 5
Dependent Claim
75 words
A restructured coal article comprising a tube-like formation of coal having an axis, a hollow core and opening means in said formation extending radially relative to such axis through from said core to the outer surface of the article for enabling air flow to enter said core and for increasing the surface area from which volatile gases may issue from the article thereby to facilitate obtaining burning over substantially the entire length of the article.
Claim 6
Dependent Claim
75 words
A restructured coal article comprising a tube-like formation of coal having an axis, a hollow core and opening means in said formation extending radially relative to such axis through from said core to the outer surface of the article for enabling air flow to enter said core and for increasing the surface area from which volatile gases may issue from the article thereby to facilitate obtaining burning over substantially the entire length of the article.
Claim 7
Dependent Claim
27 words
A restructured coal article comprising a substantially completely integral tube-like formation of coal including means for facilitating the breaking of the same into several generally like pieces.
Claim 8
Dependent Claim
27 words
A restructured coal article comprising a substantially completely integral tube-like formation of coal including means for facilitating the breaking of the same into several generally like pieces.
Claim 9
Dependent Claim
79 words
A restructured coal article comprising a tube-like formation of coal, the outer surface of said tube-like formation of coal being generally cylindrical and the interior surface of said tube-like formation of coal having rib-like protrusions in the same, each of said protrusions having a sharp edge extending longitudinally along the length of the article and the inner wall of the article circumscribing said hollow core including circumferential portions separating respective adjacent protrusions along the longitudinal extent of the article.
Claim 10
Dependent Claim
79 words
A restructured coal article comprising a tube-like formation of coal, the outer surface of said tube-like formation of coal being generally cylindrical and the interior surface of said tube-like formation of coal having rib-like protrusions in the same, each of said protrusions having a sharp edge extending longitudinally along the length of the article and the inner wall of the article circumscribing said hollow core including circumferential portions separating respective adjacent protrusions along the longitudinal extent of the article.
Claim 11
Dependent Claim
51 words
A restructured coal article comprising a tube-like formation of coal, the outer surface of said tube-like formation of coal being generally cylindrical and the interior surface of said tube-like formation of coal having rib-like protrusions in the same, each of said protrusions having a generally curved configuration for minimizing breakage thereof.
Claim 12
Dependent Claim
51 words
A restructured coal article comprising a tube-like formation of coal, the outer surface of said tube-like formation of coal being generally cylindrical and the interior surface of said tube-like formation of coal having rib-like protrusions in the same, each of said protrusions having a generally curved configuration for minimizing breakage thereof.
Claim 13
Dependent Claim
22 words
The article of claim 4, said means for facilitating comprising a plurality of slots extending radially and partially circumferentially in the article.
Claim 14
Dependent Claim
19 words
The article of claim 6, wherein said tube-like formation of coal is generally elongate and has a linear axis.
Claim 15
Dependent Claim
19 words
The article of claim 5, wherein said tube-like formation of coal is generally elongate and has a linear axis.
Claim 16
Dependent Claim
14 words
The article of claim 3, wherein said opening means comprise a plurality of holes.
Claim 17
Dependent Claim
15 words
the article of claim 3, wherein said opening means comprise a plurality of elongate slots.
Claim 18
Dependent Claim
20 words
The article of claim 1, further comprising a fuse extending out of said igniter material to facilitate igniting the latter.
References Cited (Backward Citations)
US57890A
Cited
US1194613A
Cited
US1780205A
Cited
US2107054A
Cited
GB506283A
Cited
US2618537A
Cited
US4062655A
Cited
US3726651A
Cited
US3989433A
Cited
US4049390A
Cited
US4060396A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-01-06 | 1984-07-07 | 1985-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-01-06 | 1988-07-07 | 1989-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-01-06 | 1992-07-07 | 1993-01-06 | $7700.00 | Window Closed / Lapsed |