US3193266A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary furnace
Assignee: Huettenwerk Oberhausen AG
•
Filing: 1962-05-08
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Granted: 1965-07-06
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Expires: 1982-05-08
Abstract
No abstract record available.
Inventors
- 👤 Becker Helmut
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 08:40
CPC Classifications
F; F27; F27B; F27B7/00; F27B7/20; F27B7/22; F27B7/24; F16; F16J; F16J15/00; F16J15/16; F16J15/34; F16J15/36; F16J15/363
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
A SEAL FOR A PAIR OF RELATIVELY ROTATABLE TUBULAR MEMBERS FORMING DUCTS FOR THE PASSAGE OF A FLUID THEREBETWEEN, COMPRISING A TUBULAR BELLOWS SECURED AT ONE END TO ONE OF SAID MEMBERS WHILE SURROUNDING AN ADJACENT PART OF THE OTHER OF SAID MEMBERS, MEANS ON SAID OTHER OF SAID MEMBERS FORMING A PLANAR FIRST SURFACE SUBSTANTIALLY TRANSVERSE TO THE AXIS OF ROTATION, SAID BELLOWS HAVING A FREE EXTREMITY WITH A SECOND SUBSTANTIALLY TRANSVERSE PLANAR SURFACE RESILIENTLY URGED TOWARDS SAID FIRST SURFACE, AND A SOLID RING OF RIGID LOW-FRICTION MATERIAL INTERPOSED BETWEEN SAID SURFACES AND SECURED TO ONE OF THEM FOR ENABLING RELATIVE ROTATION OF SAID SURFACES.
Claim 2
Dependent Claim
106 words
A SEAL FOR A PAIR OF RELATIVELY ROTATABLE TUBULAR MEMBERS FORMING DUCTS FOR THE PASSAGE OF A FLUID THEREBETWEEN, COMPRISING A TUBULAR BELLOWS SECURED AT ONE END TO ONE OF SAID MEMBERS WHILE SURROUNDING AN ADJACENT PART OF THE OTHER OF SAID MEMBERS, MEANS ON SAID OTHER OF SAID MEMBERS FORMING A PLANAR FIRST SURFACE SUBSTANTIALLY TRANSVERSE TO THE AXIS OF ROTATION, SAID BELLOWS HAVING A FREE EXTREMITY WITH A SECOND SUBSTANTIALLY TRANSVERSE PLANAR SURFACE RESILIENTLY URGED TOWARDS SAID FIRST SURFACE, AND A SOLID RING OF RIGID LOW-FRICTION MATERIAL INTERPOSED BETWEEN SAID SURFACES AND SECURED TO ONE OF THEM FOR ENABLING RELATIVE ROTATION OF SAID SURFACES.
References Cited (Backward Citations)
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Cited
GB473709A
Cited
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Cited
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Cited
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Cited
US3122375A
Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-07-05 | 1969-01-04 | 1969-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-05 | 1973-01-04 | 1973-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-05 | 1977-01-04 | 1977-07-06 | $7700.00 | Window Closed / Lapsed |