US3116798A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rock piercing blowpipe having internal combustion chamber
Assignee: Union Carbide Corp
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Filing: 1956-04-04
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Granted: 1964-01-07
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Expires: 1976-04-04
Abstract
No abstract record available.
Inventors
- 👤 Jr Frederick R Job
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:38
CPC Classifications
E; E21; E21B; E21B7/00; E21B7/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
A MINERAL WORKING BLOWPIPE COMPRISING, AN ELONGATED BODY MEMBER HAVING FIRST AND SECOND ENDS; A FLAME NOZZLE MEMBER AT SAID FIRST END THEREOF HAVING AN INTERNAL COMBUSTION CHAMBER CAPABLE OF SUSTAINING COMBUSTION AT GREATER THAN CRITICAL PRESSURE AND DISCHARGING A HIGH VELOCITY FLAME JET THROUGH A RESTRICTED THROAT SECTION AND A DIVERGING PASSAGE TO AN EXIT PORT AT AN EXTERNAL SURFACE OF SAID NOZZLE MEMBER; INLET MEANS POSITIONED NEAR SAID SECOND END FOR SUPPLYING FLUID FUEL, OXIDANT AND COOLING FLUID TO SAID BLOWPIPE; INTERNAL PASSAGE MEANS IN SAID ELONGATED BODY MEMBER FOR INDIVIDUALLY TRANSMITTING SAID FLUID FUEL, OXIDANT AND COOLING FLUID FROM SAID INLET MEANS TO SAID NOZZLE MEMBER; ATOMIZING MEANS IN SAID NOZZLE
Claim 2
Dependent Claim
114 words
A MINERAL WORKING BLOWPIPE COMPRISING, AN ELONGATED BODY MEMBER HAVING FIRST AND SECOND ENDS; A FLAME NOZZLE MEMBER AT SAID FIRST END THEREOF HAVING AN INTERNAL COMBUSTION CHAMBER CAPABLE OF SUSTAINING COMBUSTION AT GREATER THAN CRITICAL PRESSURE AND DISCHARGING A HIGH VELOCITY FLAME JET THROUGH A RESTRICTED THROAT SECTION AND A DIVERGING PASSAGE TO AN EXIT PORT AT AN EXTERNAL SURFACE OF SAID NOZZLE MEMBER; INLET MEANS POSITIONED NEAR SAID SECOND END FOR SUPPLYING FLUID FUEL, OXIDANT AND COOLING FLUID TO SAID BLOWPIPE; INTERNAL PASSAGE MEANS IN SAID ELONGATED BODY MEMBER FOR INDIVIDUALLY TRANSMITTING SAID FLUID FUEL, OXIDANT AND COOLING FLUID FROM SAID INLET MEANS TO SAID NOZZLE MEMBER; ATOMIZING MEANS IN SAID NOZZLE
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-01-06 | 1967-07-08 | 1968-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-01-06 | 1971-07-08 | 1972-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-01-06 | 1975-07-08 | 1976-01-07 | $7700.00 | Window Closed / Lapsed |