Patent US4623577A successfully refreshed from Google Patents.
Patent US3231289A successfully refreshed from Google Patents.
US3231289A
Expired / Lapsed
US
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Sealing gasket
Assignee: Parker Hannifin Corp
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Filing: 1962-01-26
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Granted: 1966-01-25
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Expires: 1982-01-26
Abstract
No abstract record available.
Inventors
- 👤 Theodore R Carrell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 04:59
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/02; F16J15/06; F16J15/067; F16J15/10; F16J15/108
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
137 words
IN A SECTIONAL GASKET, FIRST AND SECOND SECTIONS EACH HAVING FLAT OPPOSED FACES, SAID FIRST SECTION HAVING A RECESS THEREIN, SAID SECOND SECTION HAVING A TONGUE INTERLOCKINGLY RECEIVABLE WITHIN SAID RECESS, A GROOVE IN EACH FACE, THE GROOVES IN SAID FIRST SECTION INTERSECTING SAID RECESS AND THE GROOVES IN SAID SECOND SECTION EXTENDING ACROSS SAID TONGUE AND IN ALIGNMENT WITH THE GROOVES IN SAID FIRST SECTION WHEN THE TONGUE IS WITHIN SAID RECESS, A NOTCH CONNECTING THE GROOVES OF SAID FIRST SECTION AT THE EDGE OF SAID RECESS AND ANOTHER NOTCH CONNECTNG SAID GROOVES OF SAID SECOND SECTION AT THE EDGE OF SAID TONGUE, A RUBBER-LIKE SEALING STRIP IN THE GROOVES AND NOTCHES OF EACH SECTION, SAID STRIPS BEING SEALINGLY ENGAGEABLE WITH EACH OTHER AT SAID NOTCHES ACROSS THE ENTIRE THICKNESS OF SAID SECTIONS AT SAID NOTCHES.
Claim 2
Dependent Claim
137 words
IN A SECTIONAL GASKET, FIRST AND SECOND SECTIONS EACH HAVING FLAT OPPOSED FACES, SAID FIRST SECTION HAVING A RECESS THEREIN, SAID SECOND SECTION HAVING A TONGUE INTERLOCKINGLY RECEIVABLE WITHIN SAID RECESS, A GROOVE IN EACH FACE, THE GROOVES IN SAID FIRST SECTION INTERSECTING SAID RECESS AND THE GROOVES IN SAID SECOND SECTION EXTENDING ACROSS SAID TONGUE AND IN ALIGNMENT WITH THE GROOVES IN SAID FIRST SECTION WHEN THE TONGUE IS WITHIN SAID RECESS, A NOTCH CONNECTING THE GROOVES OF SAID FIRST SECTION AT THE EDGE OF SAID RECESS AND ANOTHER NOTCH CONNECTNG SAID GROOVES OF SAID SECOND SECTION AT THE EDGE OF SAID TONGUE, A RUBBER-LIKE SEALING STRIP IN THE GROOVES AND NOTCHES OF EACH SECTION, SAID STRIPS BEING SEALINGLY ENGAGEABLE WITH EACH OTHER AT SAID NOTCHES ACROSS THE ENTIRE THICKNESS OF SAID SECTIONS AT SAID NOTCHES.
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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 |