Patent US2291771A successfully refreshed from Google Patents.
US3339933A
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Rotary seal
Assignee: General Electric Co
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Filing: 1965-02-24
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Granted: 1967-09-05
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Expires: 1985-02-24
Abstract
No abstract record available.
Inventors
- 👤 Foster William Phillips
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:36
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/44; F16J15/445; Y; Y10; Y10S; Y10S277/00; Y10S277/935; Y10S277/939; Y10S277/94; Y10S277/941; Y10S277/943
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
A ROTARY SEAL COMPRISING: A ROTATING MEMBER; A STATIONARY MEMBER; AND A SURFACE PORTION OF A BONDED HIGH TEMPERATURE OXIDE BONDED WITH A FIRST OF SAID MEMBERS, THE HIGH TEMPERATURE OXIDE MATERIAL (A) COMPRISING AT LEAST 30 WEIGHT PERCENT OF THE SURFACE PORTION AND BEING AN OXIDE SELECTED FROM THE GROUP CONSISTING OF THE OXIDES OF ALUMINUM AND ZIRCONIUM,
Claim 2
Dependent Claim
59 words
A ROTARY SEAL COMPRISING: A ROTATING MEMBER; A STATIONARY MEMBER; AND A SURFACE PORTION OF A BONDED HIGH TEMPERATURE OXIDE BONDED WITH A FIRST OF SAID MEMBERS, THE HIGH TEMPERATURE OXIDE MATERIAL (A) COMPRISING AT LEAST 30 WEIGHT PERCENT OF THE SURFACE PORTION AND BEING AN OXIDE SELECTED FROM THE GROUP CONSISTING OF THE OXIDES OF ALUMINUM AND ZIRCONIUM,
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-09-04 | 1971-03-06 | 1971-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-04 | 1975-03-06 | 1975-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-04 | 1979-03-06 | 1979-09-05 | $7700.00 | Window Closed / Lapsed |