US3189359A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sealing ring with corner lip
Assignee: Minnesota Rubber and Plastics
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Filing: 1961-12-14
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Granted: 1965-06-15
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Expires: 1981-12-14
Abstract
No abstract record available.
Inventors
- 👤 Robert W Haberkorn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:53
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/32; F16J15/3204
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
127 words
A FLUID SEAL COMPRISING, (A) A PAIR OF CONTIGUOUS SURFACES, ONE OF SAID SURFACES HAVING AN ANNULAR SEALING GROOVE FORMED THEREIN OPPOSITE TO AND FACING THE OTHER OF SAID SURFACES AND ADAPTED TO RECEIVE A SEALING RING THEREIN, (B) FLUID UNDER PRESSURE DISPOSED BETWEEN SAID SURFACES WITH THE PRESSURE APPLIED IN A PREDETERMINED DIRECTION ACROSS SAID GROOVE, (C) AND A PRESSURE ACTUATED SEALING RING DISPOSED WITHIN SAID GROOVE AND EFFECTING A SEAL BETWEEN SAID SURFACES, (D) SAID SEALING RING BEING COMPRISED OF A CONTINUOUSLY FORMED RING-LIKE MEMBER MADE OF A RESILIENT FLOWABLE MATERIAL SUCH AS RUBBER THROUGHOUT AND ADAPTED ABLE MATERIAL INTO SAID SEALING GROOVE, (E) SAID SEALING RING IN ITS FREE FORM HAVING A SUBSTANTIALLY RECTANGULAR CROSS-SECTIONAL CONFIGURATION THROUGHOUT ITS CONTINUOUS EXTENT AND HAVING A CON-
Claim 2
Dependent Claim
127 words
A FLUID SEAL COMPRISING, (A) A PAIR OF CONTIGUOUS SURFACES, ONE OF SAID SURFACES HAVING AN ANNULAR SEALING GROOVE FORMED THEREIN OPPOSITE TO AND FACING THE OTHER OF SAID SURFACES AND ADAPTED TO RECEIVE A SEALING RING THEREIN, (B) FLUID UNDER PRESSURE DISPOSED BETWEEN SAID SURFACES WITH THE PRESSURE APPLIED IN A PREDETERMINED DIRECTION ACROSS SAID GROOVE, (C) AND A PRESSURE ACTUATED SEALING RING DISPOSED WITHIN SAID GROOVE AND EFFECTING A SEAL BETWEEN SAID SURFACES, (D) SAID SEALING RING BEING COMPRISED OF A CONTINUOUSLY FORMED RING-LIKE MEMBER MADE OF A RESILIENT FLOWABLE MATERIAL SUCH AS RUBBER THROUGHOUT AND ADAPTED ABLE MATERIAL INTO SAID SEALING GROOVE, (E) SAID SEALING RING IN ITS FREE FORM HAVING A SUBSTANTIALLY RECTANGULAR CROSS-SECTIONAL CONFIGURATION THROUGHOUT ITS CONTINUOUS EXTENT AND HAVING A CON-
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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) | 1968-06-14 | 1968-12-14 | 1969-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-14 | 1972-12-14 | 1973-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-14 | 1976-12-14 | 1977-06-15 | $7700.00 | Window Closed / Lapsed |