US3189371A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Joint for lined pipe sections with gasket compression limiting means
Assignee: Shell USA Inc
•
Filing: 1961-12-22
•
Granted: 1965-06-15
•
Expires: 1981-12-22
Abstract
No abstract record available.
Inventors
- 👤 Donald G Swan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:16
CPC Classifications
F; F16; F16L; F16L49/00; F16L49/04; F16L23/00; F16L23/12; F16L23/125; Y; Y10; Y10S; Y10S285/00; Y10S285/911
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
153 words
A GASKET JOINT WHICH COMPRISES: (A) A PAIR OF PIPE SECTIONS JOINED IN SPACED, COAXIAL, END-TO-END RELATION, EACH SAID SECTION COMPRISING: (1) A RIGID OUTER PART HAVING AT ITS END A CHAMFER WITH A SURFACE THAT INCLINES RADIALLY INWARDS IN THE DIRECTION AWAY FROM THE END, SAID RIGID PART EXTENDING ESSENTIALLY THE FULL LENGTH OF THE SECTION, (2) A BRITTLE INTERNAL LINER BONDED TO SAID OUTER PART AND HAVING A TERMINAL PORTION EXTENDING TOWARD THE SAID END OPPOSITE SAID CHAMFER AND HAVING THE OUTER SURFACE THEREOF EXPOSED IN SPACED RELATION TO THE INCLINED SURFACE TO FORM THEREWITH AN ANNULAR CHAMBER AND (3) ABUTMENTS ON SAID RIGID PARTS SUBSTANTIALLY AT SAID ENDS, (B) A GASKET POSITIONED BETWEEN SAID SECTION, SAID GASKET COMPRISING: (1) AN ANNULUS OF AN ELASTOMER HAVING A RADIAL CROSS SECTION WHICH INCLUDES: (A) A MAJOR AREA OF OUTLINE TO FIT INTO AND SUBSTANTIALLY FILL SAID CHAMBERS OF THE CONJOINED SECTIONS, AND
Claim 2
Dependent Claim
153 words
A GASKET JOINT WHICH COMPRISES: (A) A PAIR OF PIPE SECTIONS JOINED IN SPACED, COAXIAL, END-TO-END RELATION, EACH SAID SECTION COMPRISING: (1) A RIGID OUTER PART HAVING AT ITS END A CHAMFER WITH A SURFACE THAT INCLINES RADIALLY INWARDS IN THE DIRECTION AWAY FROM THE END, SAID RIGID PART EXTENDING ESSENTIALLY THE FULL LENGTH OF THE SECTION, (2) A BRITTLE INTERNAL LINER BONDED TO SAID OUTER PART AND HAVING A TERMINAL PORTION EXTENDING TOWARD THE SAID END OPPOSITE SAID CHAMFER AND HAVING THE OUTER SURFACE THEREOF EXPOSED IN SPACED RELATION TO THE INCLINED SURFACE TO FORM THEREWITH AN ANNULAR CHAMBER AND (3) ABUTMENTS ON SAID RIGID PARTS SUBSTANTIALLY AT SAID ENDS, (B) A GASKET POSITIONED BETWEEN SAID SECTION, SAID GASKET COMPRISING: (1) AN ANNULUS OF AN ELASTOMER HAVING A RADIAL CROSS SECTION WHICH INCLUDES: (A) A MAJOR AREA OF OUTLINE TO FIT INTO AND SUBSTANTIALLY FILL SAID CHAMBERS OF THE CONJOINED SECTIONS, AND
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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 |