Patent US3289950A successfully refreshed from Google Patents.
US3289950A
Expired / Lapsed
US
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Method of and apparatus for grinding moist material
Assignee: ThyssenKrupp Industrial Solutions AG
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Filing: 1963-10-28
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Granted: 1966-12-06
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Expires: 1983-10-28
Abstract
No abstract record available.
Inventors
- 👤 Helming Bernd
- 👤 Henne Heinrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:02
CPC Classifications
F; F26; F26B; F26B11/00; F26B11/02; F26B11/04; F26B11/0463; F26B11/0468; F26B11/0472; B; B02; B02C; B02C13/00; B02C13/13; B02C17/00; B02C17/04; B02C17/06; B02C21/00; B02C23/00; F26B1/00; F26B1/005
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
104 words
A METHOD OF GRINDING MOIST MATERIAL IN A TUBE MILL HAVING DRYING CHAMBER MEANS AND SEPARATE GRINDING CHAMBER MEANS, WHICH INCLUDES THE STEPS OF: CHARGING MOIST MATERIAL TO BE GROUND INTO SAID DRYING CHAMBER MEANS, PASSING A FIRST FLOW OF GAS IN THE FORM OF A DRYING GAS INTO AND THROUGH SAID DRYING CHAMBER MEANS WHILE WITHDRAWING THE GAS HAVING PASSED THROUGH SAID DRYING CHAMBER MEANS SO AS TO BYPASS AND GRINDING CHAMBER MEANS, CONVEYING PREDRIED MATERIAL INTO SAID GRINDING CHAMBER MEANS FOR GRINDNG THEREIN WHILE INDEPENDENTLY OF SAID FIRST FLOW OF GAS PASSING A SECOND FLOW OF GAS THROUGH SAID GRINDING CHAMBER MEANS.
Claim 2
Independent Claim
104 words
A METHOD OF GRINDING MOIST MATERIAL IN A TUBE MILL HAVING DRYING CHAMBER MEANS AND SEPARATE GRINDING CHAMBER MEANS, WHICH INCLUDES THE STEPS OF: CHARGING MOIST MATERIAL TO BE GROUND INTO SAID DRYING CHAMBER MEANS, PASSING A FIRST FLOW OF GAS IN THE FORM OF A DRYING GAS INTO AND THROUGH SAID DRYING CHAMBER MEANS WHILE WITHDRAWING THE GAS HAVING PASSED THROUGH SAID DRYING CHAMBER MEANS SO AS TO BYPASS AND GRINDING CHAMBER MEANS, CONVEYING PREDRIED MATERIAL INTO SAID GRINDING CHAMBER MEANS FOR GRINDNG THEREIN WHILE INDEPENDENTLY OF SAID FIRST FLOW OF GAS PASSING A SECOND FLOW OF GAS THROUGH SAID GRINDING CHAMBER MEANS.
Claim 3
Dependent Claim
149 words
A MILL FOR SEPARATELY DRYING AND GRINDING MATERIAL, WHICH INCLUDES: A TUBULAR HOUSING HAVING A FIRST SECTION ADAPTED TO BE CONNECTED TO A SOURCE OF DRYING GAS AND FORMING A DRYING CHAMBER ONLY, SAID TUBULAR HOUSING ALSO HAVING A SECOND SECTION SEPARATED FROM SAID DRYING CHAMBER AND FORMING A GRINDING CHAMBER FOR GRINDING MATERIAL RECEIVED BY AND DRIED IN SAID DRYING CHAMBER, SAID TUBULAR HOUSING FURTHERMORE HAVING A THIRD SECTION LOCATION BETWEEN SAID FIRST AND SAID SECOND SECTION AND COMPRISING APERTURES FOR COMMUNICATION WITH SAID DRYING CHAMBER AND SAID GRINDING CHAMBER, FIRST CONDUIT MEANS IN FLOW COMMUNICATION WITH SAID THIRD SECTION AND BYPASSING SAID SECOND SECTION FOR WITHDRAWING GAS PASSED THROUGH SAID FIRST SECTION AND CAUSING AND DRYING GAS TO BYPASS SAID SECOND SECTION, SAID SECOND CONDUIT MEANS INDEPENDENT OF SAID FIRST CONDUIT MEANS AND IN FLOW COMMUNICATION WITH SAID SECOND SECTION FOR CONVEYING A FLOW OF GAS THEREINTO.
Claim 4
Dependent Claim
149 words
A MILL FOR SEPARATELY DRYING AND GRINDING MATERIAL, WHICH INCLUDES: A TUBULAR HOUSING HAVING A FIRST SECTION ADAPTED TO BE CONNECTED TO A SOURCE OF DRYING GAS AND FORMING A DRYING CHAMBER ONLY, SAID TUBULAR HOUSING ALSO HAVING A SECOND SECTION SEPARATED FROM SAID DRYING CHAMBER AND FORMING A GRINDING CHAMBER FOR GRINDING MATERIAL RECEIVED BY AND DRIED IN SAID DRYING CHAMBER, SAID TUBULAR HOUSING FURTHERMORE HAVING A THIRD SECTION LOCATION BETWEEN SAID FIRST AND SAID SECOND SECTION AND COMPRISING APERTURES FOR COMMUNICATION WITH SAID DRYING CHAMBER AND SAID GRINDING CHAMBER, FIRST CONDUIT MEANS IN FLOW COMMUNICATION WITH SAID THIRD SECTION AND BYPASSING SAID SECOND SECTION FOR WITHDRAWING GAS PASSED THROUGH SAID FIRST SECTION AND CAUSING AND DRYING GAS TO BYPASS SAID SECOND SECTION, SAID SECOND CONDUIT MEANS INDEPENDENT OF SAID FIRST CONDUIT MEANS AND IN FLOW COMMUNICATION WITH SAID SECOND SECTION FOR CONVEYING A FLOW OF GAS THEREINTO.
References Cited (Backward Citations)
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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) | 1969-12-05 | 1970-06-06 | 1970-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-05 | 1974-06-06 | 1974-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-05 | 1978-06-06 | 1978-12-06 | $7700.00 | Window Closed / Lapsed |