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US4057400A Expired / Lapsed US ⏱️ 0.0 years remaining

Apparatus for the gasification under pressure of bituminous coal especially of fine coal in a generator

Assignee: Individual
•
Filing: 1976-09-07
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Granted: 1977-11-08
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Expires: 1996-09-07
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Abstract

Abstract Apparatus for the gasification under pressure of bituminous coal, especially fine coal, comprising a generator which has a container to receive the coal to be gasified and a feed device which supplies the coal to the container, while keeping the container closed off so as to maintain the pressure in the generator. The feed device includes a device for agglomerating the coal to be gasified located on the container, and a continuously operable screw conveyor which feeds the coal to be gasified to the agglomerating device which delivers the formed agglomerates, in a green condition, into the container. The feed device is encapsulated and, together with the fine coal and agglomerates within it, forms a gas tight closure for the container to maintain the pressure therein.

Inventors

  • 👤 Walter Kaimann
  • 👤 Rudolf Pasternak
  • 👤 Jochen Bauer

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-04 05:58
CPC Classifications
C; C10; C10J; C10J3/00; C10J3/02; C10J3/20; C10J3/30; C10J3/72; C10J3/78; C10J2200/00; C10J2200/15; C10J2200/158; C10J2300/00; C10J2300/09; C10J2300/0903; C10J2300/0906; C10J2300/0913; C10J2300/093

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 118 words
Apparatus for the gasification under pressure of fine bituminous coal, comprising a. a generator having a coal-receiving container provided with an inlet opening to receive coal to be gasified, b. a gas tight casing on said inlet opening, c. a pelletizing device in said casing above said inlet opening and including a driven rotary apertured grinding face and roller means cooperating therewith to squeeze fine coal through the apertures to form pellets to feed directly through said inlet opening, d. a pressure tight conveyor housing connected to said casing for delivering fine coal to said grinding face, e. a conveyor in said housing, and f. separate means for feeding fine coal and a binder to said conveyor housing.
Claim 2
Dependent Claim 118 words
Apparatus for the gasification under pressure of fine bituminous coal, comprising a. a generator having a coal-receiving container provided with an inlet opening to receive coal to be gasified, b. a gas tight casing on said inlet opening, c. a pelletizing device in said casing above said inlet opening and including a driven rotary apertured grinding face and roller means cooperating therewith to squeeze fine coal through the apertures to form pellets to feed directly through said inlet opening, d. a pressure tight conveyor housing connected to said casing for delivering fine coal to said grinding face, e. a conveyor in said housing, and f. separate means for feeding fine coal and a binder to said conveyor housing.

References Cited (Backward Citations)

US749302A Cited
GB262901A Cited
DE555164C Cited
US3756434A Cited
CA988301A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1980-11-07 1981-05-09 1981-11-08 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1984-11-07 1985-05-09 1985-11-08 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1988-11-07 1989-05-09 1989-11-08 $7700.00 Window Closed / Lapsed

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