US3375016A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Two-stage seal arrangement
Assignee: United States Department of the Navy
•
Filing: 1964-03-09
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Granted: 1968-03-26
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Expires: 1984-03-09
Abstract
No abstract record available.
Inventors
- 👤 Jellinek John
- 👤 Jr Louis B Weckesser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:15
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/02; F16J15/06; F16J15/064; F16J15/065; F16J15/002; F16J15/008; Y; Y10; Y10S; Y10S277/00; Y10S277/93; Y10S277/931
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
IN COMBINATION WITH A PAIR OF CONCENTRIC MEMBERS HAVING A CIRCUMFERENTIAL CLEARANCE THEREBETWEEN, A TWOSTAGE SEALING ARRANGEMENT, COMPRISING A SEALING RING IN SAID CLEARANCE, SAID SEALING RING HAVING A COEFFICIENT OF THERMAL EXPANSION SUBSTANTIALLY GREATER THAT THAT OF EITHER OF SAID MEMBERS AND BEING HEAT EXPANDIBLE INTO SEALING ENGAGEMENT WITH EACH OF SAID MEMBERS BY HEAT DISSIPATING FROM A HEATED FLUID FLOWING THROUGH ONE OF SAID MEMBERS AND PROVIDING A PERMANENT SEAL AGAINST THE FLOW OF THE HEATED FLUID THROUGH SAID CLEARANCE, AND
Claim 2
Dependent Claim
83 words
IN COMBINATION WITH A PAIR OF CONCENTRIC MEMBERS HAVING A CIRCUMFERENTIAL CLEARANCE THEREBETWEEN, A TWOSTAGE SEALING ARRANGEMENT, COMPRISING A SEALING RING IN SAID CLEARANCE, SAID SEALING RING HAVING A COEFFICIENT OF THERMAL EXPANSION SUBSTANTIALLY GREATER THAT THAT OF EITHER OF SAID MEMBERS AND BEING HEAT EXPANDIBLE INTO SEALING ENGAGEMENT WITH EACH OF SAID MEMBERS BY HEAT DISSIPATING FROM A HEATED FLUID FLOWING THROUGH ONE OF SAID MEMBERS AND PROVIDING A PERMANENT SEAL AGAINST THE FLOW OF THE HEATED FLUID THROUGH SAID CLEARANCE, AND
References Cited (Backward Citations)
US1346806A
Cited
GB190412041A
Cited
US1057112A
Cited
FR610973A
Cited
US2737405A
Cited
US2893795A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-03-26 | 1971-09-25 | 1972-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-26 | 1975-09-25 | 1976-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-26 | 1979-09-25 | 1980-03-26 | $7700.00 | Window Closed / Lapsed |