Patent US2977033A successfully refreshed from Google Patents.
Patent US3313535A successfully refreshed from Google Patents.
US3313535A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oxygen-fuel lance
Assignee: Steel Company of Wales Ltd
•
Filing: 1965-01-25
•
Granted: 1967-04-11
•
Expires: 1985-01-25
Abstract
No abstract record available.
Inventors
- 👤 David K Hopkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:45
CPC Classifications
C; C21; C21C; C21C5/00; C21C5/28; C21C5/42; C21C5/46; C21C5/4606; Y; Y02; Y02P; Y02P10/00; Y02P10/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
89 words
A LANCE FOR USE IN STEEL REINFORCING APPARATUS, WHICH LANCE COMPRISES AN ELONGATED BODY MEMBER HAVING A FUEL SUPPLY CONDUIT CENTRALLY LOCATED THEREIN AND AN OXYGEN SUPPLY CONDUIT SURROUNDING SAID FUEL SUPPLY CONDUIT TO PROVIDE AN ANNULAR PASSAGEWAY FOR THE SUPPLY OF OXYGEN, WHEREIN THE BODY MEMBER IS PROVIDED WITH A DELIVERY NOZZLE AT ONE END THEREOF FORMED WITH A PLURALITY OF DISCHARGE ORIFICES COMMUNICATING WITH SAID OXYGEN SUPPLY CONDUIT THROUGH A PLURALITY OF SHORT PIPES DISPOSED AT AN ANGLE TO THE LONGITUDINAL AXIS OF THE LANCE, AND WHEREIN
Claim 2
Dependent Claim
89 words
A LANCE FOR USE IN STEEL REINFORCING APPARATUS, WHICH LANCE COMPRISES AN ELONGATED BODY MEMBER HAVING A FUEL SUPPLY CONDUIT CENTRALLY LOCATED THEREIN AND AN OXYGEN SUPPLY CONDUIT SURROUNDING SAID FUEL SUPPLY CONDUIT TO PROVIDE AN ANNULAR PASSAGEWAY FOR THE SUPPLY OF OXYGEN, WHEREIN THE BODY MEMBER IS PROVIDED WITH A DELIVERY NOZZLE AT ONE END THEREOF FORMED WITH A PLURALITY OF DISCHARGE ORIFICES COMMUNICATING WITH SAID OXYGEN SUPPLY CONDUIT THROUGH A PLURALITY OF SHORT PIPES DISPOSED AT AN ANGLE TO THE LONGITUDINAL AXIS OF THE LANCE, AND WHEREIN
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-04-10 | 1970-10-10 | 1971-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-04-10 | 1974-10-10 | 1975-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-04-10 | 1978-10-10 | 1979-04-11 | $7700.00 | Window Closed / Lapsed |