US3092393A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Labyrinth seals
Assignee: Rolls Royce PLC
•
Filing: 1959-01-08
•
Granted: 1963-06-04
•
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 19:43
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.
References Cited (Backward Citations)
US580049A
Cited
US1536014A
Cited
US1708044A
Cited
US1642085A
Cited
US2573530A
Cited
GB663386A
Cited
US2711577A
Cited
US2963307A
Cited
FR1145388A
Cited
US2871038A
Cited
US2886351A
Cited
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 |