US3430663A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hose line for sucking off hot gases,particularly in the vacuum degassing of large metal and steel batches
Assignee: Fried Krupp Huettenwerke AG
•
Filing: 1963-04-09
•
Granted: 1969-03-04
•
Expires: 1983-04-09
Abstract
No abstract record available.
Inventors
- 👤 Adolf Sickbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:29
CPC Classifications
F; F16; F16L; F16L11/00; F16L11/04; F16L11/12; F16L11/125; B; B22; B22D; B22D45/00; B22D45/005; C; C21; C21C; C21C7/00; C21C7/10; F16L11/14; F16L11/16; F16L11/18; F16L23/00; F16L23/04; F16L27/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
70 words
A FLEXIBLE VACUUM HOSE FOR DRAWING OFF HOT GASES FOR EVACUATION VESSELS WHICH COMPRISES; (A) A FLEXIBLE METALLIC CONDUIT HAVING AN EXTERIOR SURFACE AND AN INTERIOR PASSAGE FOR THE FLOW OF SAID HOT GASES; (B) A FLEXIBLE VACUUM IMPERVIOUS SHEATH SURROUNDING THE EXTERIOR SURFACES OF SAID METALLIC CONDUIT, SAID SHEATH HAVING AN INTERIOR SURFACE WHICH IS DISPOSED IN CONTINUOUS SPACED RELATION THERETO SO AS TO BE THERMALLY INSULATED THEREFROM; AND
Claim 2
Dependent Claim
70 words
A FLEXIBLE VACUUM HOSE FOR DRAWING OFF HOT GASES FOR EVACUATION VESSELS WHICH COMPRISES; (A) A FLEXIBLE METALLIC CONDUIT HAVING AN EXTERIOR SURFACE AND AN INTERIOR PASSAGE FOR THE FLOW OF SAID HOT GASES; (B) A FLEXIBLE VACUUM IMPERVIOUS SHEATH SURROUNDING THE EXTERIOR SURFACES OF SAID METALLIC CONDUIT, SAID SHEATH HAVING AN INTERIOR SURFACE WHICH IS DISPOSED IN CONTINUOUS SPACED RELATION THERETO SO AS TO BE THERMALLY INSULATED THEREFROM; AND
References Cited (Backward Citations)
US132006A
Cited
US376401A
Cited
US534473A
Cited
US735449A
Cited
FR371456A
Cited
GB109774A
Cited
US1980466A
Cited
US2079598A
Cited
US1992485A
Cited
US2778609A
Cited
US2823703A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-03 | 1972-09-02 | 1973-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-03 | 1976-09-02 | 1977-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-03 | 1980-09-02 | 1981-03-04 | $7700.00 | Window Closed / Lapsed |