US3081745A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas seal for rotary mechanisms
Assignee: Curtiss Wright Corp
•
Filing: 1961-05-03
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Granted: 1963-03-19
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Expires: 1981-05-03
Abstract
No abstract record available.
Inventors
- 👤 Roy T Hurley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:15
CPC Classifications
F; F01; F01C; F01C19/00; F01C19/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
42 words
A GAS-SEALING MEANS FOR USE IN ROTARY MECHANISMS HAVING A SUBSTANTIALLY TRIANGULAR PERIPHERY WHEREIN THE SEALING MEANS IS WIDE AT ITS APEXES THAN IT IS INTERMEDIATE THE APEXES AND INCLUDES TWO ENGAGING PORTIONS GIVING THE SEAL AN APPROXIMATELY L-SHAPED TRANSVERSE CROSS SECTION.
Claim 2
Dependent Claim
42 words
A GAS-SEALING MEANS FOR USE IN ROTARY MECHANISMS HAVING A SUBSTANTIALLY TRIANGULAR PERIPHERY WHEREIN THE SEALING MEANS IS WIDE AT ITS APEXES THAN IT IS INTERMEDIATE THE APEXES AND INCLUDES TWO ENGAGING PORTIONS GIVING THE SEAL AN APPROXIMATELY L-SHAPED TRANSVERSE CROSS SECTION.
References Cited (Backward Citations)
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US1636486A
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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) | 1966-03-18 | 1966-09-17 | 1967-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-18 | 1970-09-17 | 1971-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-18 | 1974-09-17 | 1975-03-19 | $7700.00 | Window Closed / Lapsed |