US3213918A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid-gaseous fuel burner
Assignee: Bethlehem Steel Corp
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Filing: 1963-09-04
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Granted: 1965-10-26
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Expires: 1983-09-04
Abstract
No abstract record available.
Inventors
- 👤 Eugene M Rudzki
- 👤 Richard J Reinbold
- 👤 Bradford K Pease
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 01:25
CPC Classifications
F; F23; F23D; F23D17/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
221 words
A LIQUID FUEL BURNER ADAPTED FOR INTERMITTENT OPERATION IN A FURNACE COMPRISING, WITHIN SAID BURNER: (A) A LIQUID-FUEL-SUPPLY TUBE TERMINATING AT ITS OUTER END IN A RESTRICTED ORIFICE, (B) A FIRST CHECK VALVE IN SAID LIQUID-FUEL-SUPPLY TUBE LOCATED TO THE REAR OF AND CLOSELY ADJACENT TO SAID TUVE ORIFICE AND ARRANGED TO PERMIT FORWARD FLOW OF LIQUID FUEL THROUGH SAID SUPPLY TUBE AND CHECK VALVE AND OUT OF SAID TUBE OF ORIFICE AND TO PRVENT BACK FLOW OF FLUID THROUGH SAID FIRST CHECK VALVE, (C) A PURGING-MEDIUM-SUPPLY CONDUIT COMMUNICATING WITH SAID LIQUID-FUEL-SUPPLY TUBE BETWEEN SAID TUBE ORIFICE AND SAID FIRST CHECK VALVE, (D) A SECOND CHECK VALVE IN SAID PURGING-MEDIUMSUPPLY CONDUIT CLOSELY ADJACENT TO SADI TUBE ORIFICE AND ARRANGED TO PERMIT FORWARD FLOW OF PURGING MEDIUM THROUGH SAID PURGING-MEDIUM-SUPPLY CONDUIT AND SECON D CHECK VALVE AND OUT OF SAID TUBE ORIFICE AND TO PREVENT BACK FLOW OF FLUID THROUGH SAID SECOND CHECK VALVE, (E) A PIPE SURROUNDING SAID LIQUID-FUEL-SUPPLY TUBE, SAID FIRST CHECK VALVE, SAID PURGING-MEDIUM-SUPPLY CONDUIT, AND SAID SECOND CHECK VALVE, (F) MEANS TO INTERMITTENTLY SUPPLY LIQUID FUEL TO SAID LIQUID-FUEL-SUPPLY TUBE FOR EJECTION THROUGH THE TUBE ORIFICE THEREIN, AND (G) MEANS TO SUPPLY PURGING MEDIUM TO SAID PURGINGMEDIUM-SUPPLY CONDUIT FOR EJECTION THROUGH THE TUBE ORIFICE IN SAID LIQUID-FUEL-SUPPLY TUBE DURING PERIOD WHEN LIQUID FUEL IS NOT BEING EJECTED THERETHROUGH.
Claim 2
Dependent Claim
221 words
A LIQUID FUEL BURNER ADAPTED FOR INTERMITTENT OPERATION IN A FURNACE COMPRISING, WITHIN SAID BURNER: (A) A LIQUID-FUEL-SUPPLY TUBE TERMINATING AT ITS OUTER END IN A RESTRICTED ORIFICE, (B) A FIRST CHECK VALVE IN SAID LIQUID-FUEL-SUPPLY TUBE LOCATED TO THE REAR OF AND CLOSELY ADJACENT TO SAID TUVE ORIFICE AND ARRANGED TO PERMIT FORWARD FLOW OF LIQUID FUEL THROUGH SAID SUPPLY TUBE AND CHECK VALVE AND OUT OF SAID TUBE OF ORIFICE AND TO PRVENT BACK FLOW OF FLUID THROUGH SAID FIRST CHECK VALVE, (C) A PURGING-MEDIUM-SUPPLY CONDUIT COMMUNICATING WITH SAID LIQUID-FUEL-SUPPLY TUBE BETWEEN SAID TUBE ORIFICE AND SAID FIRST CHECK VALVE, (D) A SECOND CHECK VALVE IN SAID PURGING-MEDIUMSUPPLY CONDUIT CLOSELY ADJACENT TO SADI TUBE ORIFICE AND ARRANGED TO PERMIT FORWARD FLOW OF PURGING MEDIUM THROUGH SAID PURGING-MEDIUM-SUPPLY CONDUIT AND SECON D CHECK VALVE AND OUT OF SAID TUBE ORIFICE AND TO PREVENT BACK FLOW OF FLUID THROUGH SAID SECOND CHECK VALVE, (E) A PIPE SURROUNDING SAID LIQUID-FUEL-SUPPLY TUBE, SAID FIRST CHECK VALVE, SAID PURGING-MEDIUM-SUPPLY CONDUIT, AND SAID SECOND CHECK VALVE, (F) MEANS TO INTERMITTENTLY SUPPLY LIQUID FUEL TO SAID LIQUID-FUEL-SUPPLY TUBE FOR EJECTION THROUGH THE TUBE ORIFICE THEREIN, AND (G) MEANS TO SUPPLY PURGING MEDIUM TO SAID PURGINGMEDIUM-SUPPLY CONDUIT FOR EJECTION THROUGH THE TUBE ORIFICE IN SAID LIQUID-FUEL-SUPPLY TUBE DURING PERIOD WHEN LIQUID FUEL IS NOT BEING EJECTED THERETHROUGH.
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) | 1968-10-25 | 1969-04-26 | 1969-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-25 | 1973-04-26 | 1973-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-25 | 1977-04-26 | 1977-10-26 | $7700.00 | Window Closed / Lapsed |