Patent US3387403A successfully refreshed from Google Patents.
US3387403A
Expired / Lapsed
US
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Tubular coupling
Assignee: CUBA SPECIALTY Manufacturing CO Inc
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Filing: 1965-12-09
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Granted: 1968-06-11
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Expires: 1985-12-09
Abstract
No abstract record available.
Inventors
- 👤 Lindsley B Crouch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:29
CPC Classifications
A; A01; A01K; A01K69/00; A01K69/06; A01K69/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
212 words
A COUPLING FOR JOINING TWO TUBULAR MEMBERS AND COMPRISING A PAIR OF RINGS SEVERALLY CONNECTED TO SAID MEMBERS AND REMOVABLY JOINED TOGETHER IN OVERLAPPING AND INTERLOCKING RELATIONSHIP, EACH RING INCLUDING AN ANNULAR, GENERALLY AXIALLY OUTSTANDING FLANGE DIVIDED INTO FIRST AND SECOND SEMI-ANNULAR PORTIONS, SAID FIRST FLANGE PORTION TERMINATING AT ONE END AND HAVING ITS OPPOSITE END PROVIDED WITH A GENERALLY CIRCUMFERENTIALLY EXTENDING LUG, SAID SECOND FLANGE PORTION BEING CUT AWAY AT ONE END TO PROVIDE A GENERALLY CIRCUMFERENTIALLY EXTENDING NOTCH ADJACENT SAID LUG AND BEING CUT AWAY AT ITS OPPOSITE END TO PROVIDE A CUT-OUT ADJACENT SAID ONE END OF SAID FIRST FLANGE PORTION, SAID RINGS BEING REVERSED AND THEIR FLANGE PORTIONS BEING SLIGHTLY DISTORTED SPIRALLY SO THAT SAID LUG ON SAID FIRST FLANGE PORTION OF EACH RING INTERLOCKS WITH SAID LUG ON SAID FIRST PORTION OF THE OTHER RING AND FITS INSIDE SAID FIRST FLANGE PORTION OF THE OTHER RING, SAID SECOND FLANGE PORTION ON EACH RING OVERLAPS SAID FIRST FLANGE PORTION OF THE OTHER RING, SAID ONE END ON SAID FIRST FLANGE PORTION OF EACH RING ABUTS SAID ONE END ON SAID FIRST FLANGE PORTION OF THE OTHER RING, AND SAID FIRST FLANGE PORTION ON EACH RING CLOSES SAID CUT OUT IN SAID SECOND FLANGE PORTION OF THE OTHER RING.
Claim 2
Dependent Claim
212 words
A COUPLING FOR JOINING TWO TUBULAR MEMBERS AND COMPRISING A PAIR OF RINGS SEVERALLY CONNECTED TO SAID MEMBERS AND REMOVABLY JOINED TOGETHER IN OVERLAPPING AND INTERLOCKING RELATIONSHIP, EACH RING INCLUDING AN ANNULAR, GENERALLY AXIALLY OUTSTANDING FLANGE DIVIDED INTO FIRST AND SECOND SEMI-ANNULAR PORTIONS, SAID FIRST FLANGE PORTION TERMINATING AT ONE END AND HAVING ITS OPPOSITE END PROVIDED WITH A GENERALLY CIRCUMFERENTIALLY EXTENDING LUG, SAID SECOND FLANGE PORTION BEING CUT AWAY AT ONE END TO PROVIDE A GENERALLY CIRCUMFERENTIALLY EXTENDING NOTCH ADJACENT SAID LUG AND BEING CUT AWAY AT ITS OPPOSITE END TO PROVIDE A CUT-OUT ADJACENT SAID ONE END OF SAID FIRST FLANGE PORTION, SAID RINGS BEING REVERSED AND THEIR FLANGE PORTIONS BEING SLIGHTLY DISTORTED SPIRALLY SO THAT SAID LUG ON SAID FIRST FLANGE PORTION OF EACH RING INTERLOCKS WITH SAID LUG ON SAID FIRST PORTION OF THE OTHER RING AND FITS INSIDE SAID FIRST FLANGE PORTION OF THE OTHER RING, SAID SECOND FLANGE PORTION ON EACH RING OVERLAPS SAID FIRST FLANGE PORTION OF THE OTHER RING, SAID ONE END ON SAID FIRST FLANGE PORTION OF EACH RING ABUTS SAID ONE END ON SAID FIRST FLANGE PORTION OF THE OTHER RING, AND SAID FIRST FLANGE PORTION ON EACH RING CLOSES SAID CUT OUT IN SAID SECOND FLANGE PORTION OF THE OTHER RING.
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) | 1971-06-11 | 1971-12-11 | 1972-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-06-11 | 1975-12-11 | 1976-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-06-11 | 1979-12-11 | 1980-06-11 | $7700.00 | Window Closed / Lapsed |