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US3082011A
Expired / Lapsed
US
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Rotary shaft seal
Assignee: Sealol Corp
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Filing: 1959-12-09
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Granted: 1963-03-19
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Expires: 1979-12-09
Abstract
No abstract record available.
Inventors
- 👤 Rolf H W Kroekel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:11
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/34; F16J15/3464; F16J15/3488; Y; Y10; Y10S; Y10S277/00; Y10S277/931
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
140 words
A SEALING RING ASSEMBLY COMPRISING AT LEAST ONE SEAL RING HAVING ONLY ONE SPLIT EXTENDING IN A GENERALLY RADIAL DIRECTION, AN ELONGATED EXPANSION STRIP HAVING AN ARCUATE CONFIGURATION, SAID SEAL RING BEING PROVIDED WITH CIRCUMFERENTIALLY SPACED STEPS LESS THAN 180* APART, AND SAID EXPANSION STRIP HAVING ITS ENDS BEARING AGAINST SAID STEPS, A SHROUD RING DISPOSED CONCENTRICALLY ABOUT SAID SEAL RING AND SAID EXPANSION STRIP, THE INNER CIRCUMFERENTIAL WALL OF SAID SHROUD RING BEING CLOSELY FITTED TO SAID SEAL RING AND SAID EXPANSION STRIP AND HAVING A LOWER COEFFICIENT OF EXPANSION THAN SAID EXPANSION STRIP TO CONSTRAIN THE LATTER TO EXPAND AS THE TEMPERATURE RISES IN THE DIRECTION OF ITS LONGITUDINAL AXIS AND TO SPREAD APART THE SPLIT IN SAID SEAL RING, AND MEANS TO COVER A FACE OF SAID SEAL RING SO AS TO PREVENT LEAKAGE THROUGH THE SPLIT.
Claim 2
Dependent Claim
140 words
A SEALING RING ASSEMBLY COMPRISING AT LEAST ONE SEAL RING HAVING ONLY ONE SPLIT EXTENDING IN A GENERALLY RADIAL DIRECTION, AN ELONGATED EXPANSION STRIP HAVING AN ARCUATE CONFIGURATION, SAID SEAL RING BEING PROVIDED WITH CIRCUMFERENTIALLY SPACED STEPS LESS THAN 180* APART, AND SAID EXPANSION STRIP HAVING ITS ENDS BEARING AGAINST SAID STEPS, A SHROUD RING DISPOSED CONCENTRICALLY ABOUT SAID SEAL RING AND SAID EXPANSION STRIP, THE INNER CIRCUMFERENTIAL WALL OF SAID SHROUD RING BEING CLOSELY FITTED TO SAID SEAL RING AND SAID EXPANSION STRIP AND HAVING A LOWER COEFFICIENT OF EXPANSION THAN SAID EXPANSION STRIP TO CONSTRAIN THE LATTER TO EXPAND AS THE TEMPERATURE RISES IN THE DIRECTION OF ITS LONGITUDINAL AXIS AND TO SPREAD APART THE SPLIT IN SAID SEAL RING, AND MEANS TO COVER A FACE OF SAID SEAL RING SO AS TO PREVENT LEAKAGE THROUGH THE SPLIT.
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) | 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 |