Patent US3273903A successfully refreshed from Google Patents.
US3273903A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Regenerator seal for a gas turbine engine
Assignee: Old Carco LLC
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Filing: 1963-10-07
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Granted: 1966-09-20
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Expires: 1983-10-07
Abstract
No abstract record available.
Inventors
- 👤 William I Chapman
- 👤 James H Whitfield
- 👤 Clinton P Atwood
- 👤 Jr William A Ziemke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:12
CPC Classifications
F; F02; F02C; F02C7/00; F02C7/08; F02C7/10; F02C7/105
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
133 words
IN A SEAL FOR THE REGENERATOR OF A GAS TURBINE ENGINE, RUBBING MEANS HAVING AN INNER SEALING SURFACE ADAPTED TO ENGAGE A MATING SURFACE OF SAID REGENERATOR TO DEFINE A SEAL BETWEEN HIGH AND LOW PRESSURE GASES, BASE MEANS CONFRONTING AN OUTER SIDE OF SAID RUBBING MEANS OPPOSITE SAID SEALING SURFACE AND BEING MOVABLE TOWARD AND FROM THE SAME, BRIDGE MEANS ENGAGING SAID OUTER SIDE OF SAID RUBBING MEANS, RESILIENT SEALING MEANS ENGAGING SAID BRIDGE MEANS AND BASE MEANS TO EFFECT A FLUID SEAL THEREBETWEEN, SAID RESILIENT SEALING MEANS LAPPING THE ENGAGEMENT BETWEEN SAID BRIDGE MEANS AND RUBBING MEANS AND ENGAGING THE LATTER''S OUTER SIDE IN FLUID SEALING RELATIONSHIP, SAID BASE MEANS AND RESILIENT SEALING MEANS COMPRISING A BELLOWS TYPE SEAL OPEN TO SAID HIGH PRESSURE GASES TO ENHANCE SAID FLUID SEALING RELATIONSHIP.
Claim 2
Dependent Claim
133 words
IN A SEAL FOR THE REGENERATOR OF A GAS TURBINE ENGINE, RUBBING MEANS HAVING AN INNER SEALING SURFACE ADAPTED TO ENGAGE A MATING SURFACE OF SAID REGENERATOR TO DEFINE A SEAL BETWEEN HIGH AND LOW PRESSURE GASES, BASE MEANS CONFRONTING AN OUTER SIDE OF SAID RUBBING MEANS OPPOSITE SAID SEALING SURFACE AND BEING MOVABLE TOWARD AND FROM THE SAME, BRIDGE MEANS ENGAGING SAID OUTER SIDE OF SAID RUBBING MEANS, RESILIENT SEALING MEANS ENGAGING SAID BRIDGE MEANS AND BASE MEANS TO EFFECT A FLUID SEAL THEREBETWEEN, SAID RESILIENT SEALING MEANS LAPPING THE ENGAGEMENT BETWEEN SAID BRIDGE MEANS AND RUBBING MEANS AND ENGAGING THE LATTER''S OUTER SIDE IN FLUID SEALING RELATIONSHIP, SAID BASE MEANS AND RESILIENT SEALING MEANS COMPRISING A BELLOWS TYPE SEAL OPEN TO SAID HIGH PRESSURE GASES TO ENHANCE SAID FLUID SEALING RELATIONSHIP.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-19 | 1970-03-21 | 1970-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-19 | 1974-03-21 | 1974-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-19 | 1978-03-21 | 1978-09-20 | $7700.00 | Window Closed / Lapsed |