US3303997A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compressor air seal
Assignee: RTX Corp
•
Filing: 1965-04-21
•
Granted: 1967-02-14
•
Expires: 1985-04-21
Abstract
No abstract record available.
Inventors
- 👤 Joseph J Welch
- 👤 John D Rosenthal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:39
CPC Classifications
F; F01; F01D; F01D11/00; F01D11/02; F01D11/025; F04; F04D; F04D29/00; F04D29/08; F04D29/16; F04D29/161; F04D29/164; F16; F16J; F16J15/00; F16J15/44; F16J15/447; F16J15/4476
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
A SEALING AND METERING DEVICE FOR A COMPRESSOR INCLUDING A ROTOR HAVING A ROW OF BLADES THEREON, A STATOR HAVING A ROW OF VANES THEREON COOPERATING WITH THE BLADES, AND DEFINING AN ANNULAR DUCT FOR AIR THROUGH THE COMPRESSOR, SAID ROTOR HAVING INNER AND OUTER RADIALLY SPACED AXIALLY EXTENDING FLANGES THEREON, AND SAID STATOR HAVING A COOPERATING AXIALLY EXTENDING RING LOCATED BETWEEN SAID FLANGES, SAID RING HAVING PERIPHERAL SEALING FLANGES ON ITS INNER AND OUTER SURFACE EXTENDING SUBSTANTIALLY INTO ENGAGEMENT WITH THE INNER AND OUTER FLANGES RESPECTIVELY ON THE ROTOR, AND MEANS FOR REMOVAL OF AIR FROM SUBSTANTIALLY THE MIDPOINT RADIALLY OF THE DUCT FOR METERING PAST SAID SEALING FLANGE.
Claim 2
Dependent Claim
110 words
A SEALING AND METERING DEVICE FOR A COMPRESSOR INCLUDING A ROTOR HAVING A ROW OF BLADES THEREON, A STATOR HAVING A ROW OF VANES THEREON COOPERATING WITH THE BLADES, AND DEFINING AN ANNULAR DUCT FOR AIR THROUGH THE COMPRESSOR, SAID ROTOR HAVING INNER AND OUTER RADIALLY SPACED AXIALLY EXTENDING FLANGES THEREON, AND SAID STATOR HAVING A COOPERATING AXIALLY EXTENDING RING LOCATED BETWEEN SAID FLANGES, SAID RING HAVING PERIPHERAL SEALING FLANGES ON ITS INNER AND OUTER SURFACE EXTENDING SUBSTANTIALLY INTO ENGAGEMENT WITH THE INNER AND OUTER FLANGES RESPECTIVELY ON THE ROTOR, AND MEANS FOR REMOVAL OF AIR FROM SUBSTANTIALLY THE MIDPOINT RADIALLY OF THE DUCT FOR METERING PAST SAID SEALING FLANGE.
References Cited (Backward Citations)
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Cited
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Cited
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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) | 1970-02-13 | 1970-08-15 | 1971-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-13 | 1974-08-15 | 1975-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-13 | 1978-08-15 | 1979-02-14 | $7700.00 | Window Closed / Lapsed |