Patent US3231284A successfully refreshed from Google Patents.
US3231284A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Face seals
Assignee: Federal Mogul LLC
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Filing: 1962-01-15
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Granted: 1966-01-25
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Expires: 1982-01-15
Abstract
No abstract record available.
Inventors
- 👤 Vasalie L Peickii
- 👤 Joseph E Lepetich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:56
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/34; F16J15/36
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
206 words
A UNITIZED FACE SEAL COMPRISING A FIRST SHEET METAL RING HAVING A RADIAL FLANGE REINFORCED BY AN AXIALLY EXTENDING PORTION, SAID RADIAL FLANGE HAVE A FACE OPPOSITE SAID AXIALLY EXTENDING PORTION WITH A COATED FLAT FACE; A SECOND SHEET METAL RING HAVING A RADIAL FLANGE REINFORCED BY AN AXIALLY EXTENDING FLANGE, SAID RADIAL FLANGE HAVING A FACE LIKE THAT OF SAID FIRST RING IN SEALING CONTACT WITH SAID FIRST FACE; AN ANNULAR METAL CASE HAVING A CYLINDRICAL PORTION WITH RADIALLY EXTENDING PORTIONS AT EACH END, ONE SPACED FROM SAID SECOND RING RADIAL FLANGE ON THE SIDE OPPOSITE SAID SECOND FACE, THE OTHER SPACED FROM SAID FIRST RING''S RADIAL FLANGE ON THE SIDE OPPOSITE SAID FIRST FLANGE, THEREBY PREVENTING WITHDRAWAL OF SAID SHEET METAL RINGS FROM SAID CASE, ONE SAID RING AND SAID CASE''S CYLINDRICAL PORTION AND ONE OF ITS RADIAL FLANGES DEFINING AN ANNULAR SPACE; MEANS IN SAID SPACE SEALING BETWEEN THE LATTER SAID RING AND SAID CASE WHILE PERMITTING RELATIVE AXIAL MOVEMENT; AND AN ANNULAR FINGER SPRING IN SAID SPACE HAVING A BASE BEARING ON ONE OF ONE SAID RING AND SAID CASE AND A SERIES OF FINGERS BEARING AGAINST THE OTHER OF SAID ONE RING AND SAID CASE URGING SAID FACES TOWARD EACH OTHER.
Claim 2
Dependent Claim
206 words
A UNITIZED FACE SEAL COMPRISING A FIRST SHEET METAL RING HAVING A RADIAL FLANGE REINFORCED BY AN AXIALLY EXTENDING PORTION, SAID RADIAL FLANGE HAVE A FACE OPPOSITE SAID AXIALLY EXTENDING PORTION WITH A COATED FLAT FACE; A SECOND SHEET METAL RING HAVING A RADIAL FLANGE REINFORCED BY AN AXIALLY EXTENDING FLANGE, SAID RADIAL FLANGE HAVING A FACE LIKE THAT OF SAID FIRST RING IN SEALING CONTACT WITH SAID FIRST FACE; AN ANNULAR METAL CASE HAVING A CYLINDRICAL PORTION WITH RADIALLY EXTENDING PORTIONS AT EACH END, ONE SPACED FROM SAID SECOND RING RADIAL FLANGE ON THE SIDE OPPOSITE SAID SECOND FACE, THE OTHER SPACED FROM SAID FIRST RING''S RADIAL FLANGE ON THE SIDE OPPOSITE SAID FIRST FLANGE, THEREBY PREVENTING WITHDRAWAL OF SAID SHEET METAL RINGS FROM SAID CASE, ONE SAID RING AND SAID CASE''S CYLINDRICAL PORTION AND ONE OF ITS RADIAL FLANGES DEFINING AN ANNULAR SPACE; MEANS IN SAID SPACE SEALING BETWEEN THE LATTER SAID RING AND SAID CASE WHILE PERMITTING RELATIVE AXIAL MOVEMENT; AND AN ANNULAR FINGER SPRING IN SAID SPACE HAVING A BASE BEARING ON ONE OF ONE SAID RING AND SAID CASE AND A SERIES OF FINGERS BEARING AGAINST THE OTHER OF SAID ONE RING AND SAID CASE URGING SAID FACES TOWARD EACH OTHER.
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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) | 1969-01-24 | 1969-07-26 | 1970-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-24 | 1973-07-26 | 1974-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-24 | 1977-07-26 | 1978-01-25 | $7700.00 | Window Closed / Lapsed |