Patent US2633332A successfully refreshed from Google Patents.
US2633332A
Expired / Lapsed
US
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Flame process
Assignee: Union Carbide Corp
•
Filing: 1946-11-08
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Granted: 1953-03-31
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Expires: 1966-11-08
Abstract
No abstract record available.
Inventors
- 👤 John J Murphy
- 👤 John M Gaines
- 👤 Edward L Mccandless
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:53
CPC Classifications
E; E21; E21B; E21B7/00; E21B7/14
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
75 words
IN THE METHOD OF WORKING ROCK BY PROGRESSIVELY APPLYING THERETO FLAME FROM THE COMBUSTION OF A LIQUID FUEL DISCHARGED FROM A BLOWTORCH TO SEPARATE MATERIAL FROM SAID ROCK WHILE WATER CONCURRENTLY ENTERS THE VICINITY OF SAID FLAME, THE IMPROVEMENT WHICH COMPRISES: DIRECTLY INTO THE WATER IN THE VICINITY OF SAID FLAME A FLOWING STREAM OF PARTICLES OF CALCIUM CARBIDE TO GENERATE ACETYLENE, WHEREBY SUCH ACETYLENE IS GENERATED, BURNS, AND IMPROVES THE STABILITY OF SAID FLAME.
Claim 2
Dependent Claim
75 words
IN THE METHOD OF WORKING ROCK BY PROGRESSIVELY APPLYING THERETO FLAME FROM THE COMBUSTION OF A LIQUID FUEL DISCHARGED FROM A BLOWTORCH TO SEPARATE MATERIAL FROM SAID ROCK WHILE WATER CONCURRENTLY ENTERS THE VICINITY OF SAID FLAME, THE IMPROVEMENT WHICH COMPRISES: DIRECTLY INTO THE WATER IN THE VICINITY OF SAID FLAME A FLOWING STREAM OF PARTICLES OF CALCIUM CARBIDE TO GENERATE ACETYLENE, WHEREBY SUCH ACETYLENE IS GENERATED, BURNS, AND IMPROVES THE STABILITY OF SAID FLAME.
Claim 3
Dependent Claim
32 words
A FUEL MIXTURE COMPRISING A LIQUID HYDROCARBON FUEL HAVING MIXED THEREWITH AND SUSPENDED THEREIN PARTICLES OF COMMERICALLY PURE CALCIM CARBIDE IN AN AMOUNT BETWEEN 5 AND 50% OF SAID MIXTURE BY WEIGHT.
Claim 4
Dependent Claim
32 words
A FUEL MIXTURE COMPRISING A LIQUID HYDROCARBON FUEL HAVING MIXED THEREWITH AND SUSPENDED THEREIN PARTICLES OF COMMERICALLY PURE CALCIM CARBIDE IN AN AMOUNT BETWEEN 5 AND 50% OF SAID MIXTURE BY WEIGHT.
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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) | 1956-03-30 | 1956-09-29 | 1957-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-30 | 1960-09-29 | 1961-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-30 | 1964-09-29 | 1965-03-31 | $7700.00 | Window Closed / Lapsed |