US3201103A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blowing tube apparatus and method for operating it
Assignee: Gutehoffnungshutte Sterkrade AG
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Filing: 1961-09-15
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Granted: 1965-08-17
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Expires: 1981-09-15
Abstract
No abstract record available.
Inventors
- 👤 Scherff Helmut
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:07
CPC Classifications
C; C21; C21C; C21C5/00; C21C5/28; C21C5/42; C21C5/46; C21C5/4606; C21C5/30; C21C5/32
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
125 words
A BLOWING TUBE APPARATUS FOR A METALLURGICAL FURNACE AND THE LIKE COMPRISING, A FIRST TUBE SECTION, A SECOND TUBE SECTION FREELY TELESCOPICALLY MOVABLE BETWEEN FULLY RETRACTED AND FULLY EXTENDED POSITIONS IN COOPERABLE ENGAGEMENT WITH SAID FIRST TUBE SECTION, SAID TUBE SECTIONS DEFINING AN INTERNAL BLOW PASSAGE THERETHROUGH, AND SEALING MEANS CARRIED BY SAID FIRST AND SECOND TUBE SECTIONS SEALING THE CONNECTION BETWEEN SAIDS SECTIONS ONLY WHEN SAID SECTIONS ARE IN A SUBSTANTIALLY FULLY EXTENDED ORIENTATION, INCLUDING A FORMATION ON ONE OF SAID SECTIONS WHICH IS WEDGED INTO SEALING ENGAGEMENT WITH THE OTHER OF SAID SECTIONS WHEN SAID SECTIONS ARE MOVED RELATIVELY INTO A FULLY EXTENDED ORIENTATION, SAID SEALING MEANS BEING INEFFECTIVE WHEN SAID SECTIONS ARE MOVED FROM A FULLY EXTENDED ORIENTATION TOWARD A RETRACTED ORIENTATION.
Claim 2
Dependent Claim
125 words
A BLOWING TUBE APPARATUS FOR A METALLURGICAL FURNACE AND THE LIKE COMPRISING, A FIRST TUBE SECTION, A SECOND TUBE SECTION FREELY TELESCOPICALLY MOVABLE BETWEEN FULLY RETRACTED AND FULLY EXTENDED POSITIONS IN COOPERABLE ENGAGEMENT WITH SAID FIRST TUBE SECTION, SAID TUBE SECTIONS DEFINING AN INTERNAL BLOW PASSAGE THERETHROUGH, AND SEALING MEANS CARRIED BY SAID FIRST AND SECOND TUBE SECTIONS SEALING THE CONNECTION BETWEEN SAIDS SECTIONS ONLY WHEN SAID SECTIONS ARE IN A SUBSTANTIALLY FULLY EXTENDED ORIENTATION, INCLUDING A FORMATION ON ONE OF SAID SECTIONS WHICH IS WEDGED INTO SEALING ENGAGEMENT WITH THE OTHER OF SAID SECTIONS WHEN SAID SECTIONS ARE MOVED RELATIVELY INTO A FULLY EXTENDED ORIENTATION, SAID SEALING MEANS BEING INEFFECTIVE WHEN SAID SECTIONS ARE MOVED FROM A FULLY EXTENDED ORIENTATION TOWARD A RETRACTED ORIENTATION.
Claim 3
Independent Claim
26 words
A METHOD OF OPERATING A TELESCOPIC BLOWING TUBE HAVING A MOUTH THROUGH WHICH GASES ARE BLOWN AND HAVING TELESCOPING TUBE SECTIONS, WHICH BLOWING TUBE IS ASSO-
Claim 4
Independent Claim
26 words
A METHOD OF OPERATING A TELESCOPIC BLOWING TUBE HAVING A MOUTH THROUGH WHICH GASES ARE BLOWN AND HAVING TELESCOPING TUBE SECTIONS, WHICH BLOWING TUBE IS ASSO-
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) | 1968-08-16 | 1969-02-15 | 1969-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-16 | 1973-02-15 | 1973-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-16 | 1977-02-15 | 1977-08-17 | $7700.00 | Window Closed / Lapsed |