Patent US3092393A successfully refreshed from Google Patents.
US3092393A
Expired / Lapsed
US
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Labyrinth seals
Assignee: Rolls Royce PLC
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Filing: 1959-01-08
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Granted: 1963-06-04
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Expires: 1979-01-08
Abstract
No abstract record available.
Inventors
- 👤 Morley Frederick Willia Walton
- 👤 Wilkinson Wilfred Henry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:47
CPC Classifications
F; F01; F01D; F01D11/00; F01D11/08; F16; F16J; F16J15/00; F16J15/44; F16J15/444; Y; Y10; Y10S; Y10S277/00; Y10S277/93
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
IN APPARATUS COMPRISING A ROTOR MEMBER AND A STATOR MEMBER, THE COMBINATION OF A LABYRINTH SEAL CARRIED BY ONE OF SAID MEMBERS AND WHICH COMPRISES A PLURALITY OF ANNULI OF METAL STRIP WHICH ARE AXIALLY SPACED APART FROM EACH OTHER AT THEIR PERIPHERAL SEALING EDGE PORTIONS, SAID PORTIONS BEING PLANE, AND AT LEAST ONE SHARP ANNULAR RIB WHICH IS CARRIED BY THE OTHER OF SAID MEMBERS IN SEALING RELATIONSHIP WITH SAID ANNULI, SAID RIB BEING MORE STURDILY CONSTRUCTED SO AS TO FORM ITS OWN PATH IN THE ANNULI IF RUBBING THEREBETWEEN OCCURS.
Claim 2
Dependent Claim
92 words
IN APPARATUS COMPRISING A ROTOR MEMBER AND A STATOR MEMBER, THE COMBINATION OF A LABYRINTH SEAL CARRIED BY ONE OF SAID MEMBERS AND WHICH COMPRISES A PLURALITY OF ANNULI OF METAL STRIP WHICH ARE AXIALLY SPACED APART FROM EACH OTHER AT THEIR PERIPHERAL SEALING EDGE PORTIONS, SAID PORTIONS BEING PLANE, AND AT LEAST ONE SHARP ANNULAR RIB WHICH IS CARRIED BY THE OTHER OF SAID MEMBERS IN SEALING RELATIONSHIP WITH SAID ANNULI, SAID RIB BEING MORE STURDILY CONSTRUCTED SO AS TO FORM ITS OWN PATH IN THE ANNULI IF RUBBING THEREBETWEEN OCCURS.
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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) | 1966-06-03 | 1966-12-03 | 1967-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-03 | 1970-12-03 | 1971-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-03 | 1974-12-03 | 1975-06-04 | $7700.00 | Window Closed / Lapsed |