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US3082010A
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Labyrinth seals
Assignee: Rolls Royce PLC
•
Filing: 1959-01-19
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Granted: 1963-03-19
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Expires: 1979-01-19
Abstract
No abstract record available.
Inventors
- 👤 Morley Frederick Willia Walton
- 👤 Wilkinson Wilfred Henry
- 👤 Broad Charles Samuel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:14
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/44; F16J15/444; Y; Y10; Y10S; Y10S277/00; Y10S277/93
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
125 words
IN APPARATUS COMPRISING A ROTOR MEMBER AND A STATOR MEMBER, IN COMBINATION; A LABYRINTH SEAL AND A CONFRONTING RIB ONE WITHIN THE OTHER, SAID SEAL BEING CARRIED BY ONE OF SAID MEMBERS AND COMPRISING A STACK OF THIN STRIP METAL ANNULI HAVING CIRCULAR PERIPHERAL EDGES, A PLURALITY OF DISTANCE PIECES FORMED SEPARATELY FROM AND INTERLEAVED WITH SAID ANNULI TO SPACE THE LATTER AXIALLY APART AND STRENGTHEN THEM, SAID DISTANCE PIECES BEING OF LESS RADIAL DEPTH THAN SAID ANNULI TO LEAVE SAID PERIPHERAL SEALING EDGES CLEAR, AND AT LEAST ONE RELATIVELY SHARP CONTINUOUS RIB CARRIED BY THE OTHER OF SAID MEMBERS AND ARRANGED IN SUBSTANTIAL SEALING RELATIONSHIP WITH SAID ANNULI, SAID RIB BEING SIZED TO CUT ITS OWN PATH IN THE ANNULI IF RUBBING THEREBETWEEN OCCURS.
Claim 2
Dependent Claim
125 words
IN APPARATUS COMPRISING A ROTOR MEMBER AND A STATOR MEMBER, IN COMBINATION; A LABYRINTH SEAL AND A CONFRONTING RIB ONE WITHIN THE OTHER, SAID SEAL BEING CARRIED BY ONE OF SAID MEMBERS AND COMPRISING A STACK OF THIN STRIP METAL ANNULI HAVING CIRCULAR PERIPHERAL EDGES, A PLURALITY OF DISTANCE PIECES FORMED SEPARATELY FROM AND INTERLEAVED WITH SAID ANNULI TO SPACE THE LATTER AXIALLY APART AND STRENGTHEN THEM, SAID DISTANCE PIECES BEING OF LESS RADIAL DEPTH THAN SAID ANNULI TO LEAVE SAID PERIPHERAL SEALING EDGES CLEAR, AND AT LEAST ONE RELATIVELY SHARP CONTINUOUS RIB CARRIED BY THE OTHER OF SAID MEMBERS AND ARRANGED IN SUBSTANTIAL SEALING RELATIONSHIP WITH SAID ANNULI, SAID RIB BEING SIZED TO CUT ITS OWN PATH IN THE ANNULI IF RUBBING THEREBETWEEN OCCURS.
References Cited (Backward Citations)
US580049A
Cited
FR407012A
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US1322056A
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US1190500A
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US1689735A
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US1686937A
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US2058993A
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US2458988A
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US2963307A
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FR1145388A
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GB793886A
Cited
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 |