US3403931A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Clamp
Assignee: Vetco Gray LLC
•
Filing: 1964-08-11
•
Granted: 1968-10-01
•
Expires: 1984-08-11
Abstract
No abstract record available.
Inventors
- 👤 Robert L Crain
- 👤 Raymond E Latham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:55
CPC Classifications
F; F16; F16L; F16L23/00; F16L23/16; F16L23/18; F16L23/20; F16L23/04; F16L23/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
306 words
A COUPLING SEALED AGAINST THE LEAKAGE OF FLUID PRESSURE COMPRISING A PLURALITY OF COMPLEMENTARY ARCUATE CLAMP SEGMENTS; EACH SEGMENT INCLUDING AN ARCUTE ELEMENT HAVING TWO AXIALLY SPACED ARCUATE SIDES, TWO ANGULARLY SPACED ENDS, A RADIALLY INNER WALL AND A RADIALLY OUTER WALL; MEANS DEFINING A PAIR OF AXIALLY SPACED, RADIALLY INWARDLY PROJECTING, GENERALLY PARALLEL ARCUATE RIBS ON EACH CLAMP SEGMENT RADIALLY INNER WALL, EACH RIB OF EACH PAIR INCLUDING AN ARCUATE SEALING SURFACE GENERALLY FACING THE OTHER RIB OF THE PAIR AND PROJECTING RADIALLY INWARDLY OF SAID SEGMENT AND AXIALLY TOWARD THE NEAREST OF THE AXIALLY SPACED CLAMP SEGMENT ARCUATE SIDES, ON EACH SEGMENT SUBSTANTIALLY SPACED WEDGING SURFACES ON EACH SEGMENT SUBSTANTIALLY ALIGNED WITH THE LIKE WEDGING SURFACES ON EACH OTHER CLAMP SEGMENT; MEANS DEFINING AT LEAST ONE GROOVE IN EACH CLAMP SEGMENT EXTENDING SUBSTANTIALLY TRANSVERSELY TO SAID RIBS ON SAID SEGMENT RADIALLY INNER WALL; EACH GROOVE HAVING A DEPTH AT LEAST AS GREAT AS THE OUTWARD RADIAL EXTENT OF EACH RIB, SAID GROOVE INTERSECTING EACH RIB ON SAID SEGMENT; SECUREMENT MEANS ON SAID SEGMENTS ADJACENT EACH ANGULARLY SPACED END THEREOF; EACH SECUREMENT MEANS COMPRISING A SUBSTANTIALLY RADIALLY OUTWARDLY AND AXIALLY EXTENDING LUG CLOSELY ADJACENT EACH RESPECTIVE CLAMP SEGMENT AND HAVING MEANS DEFINING A LATERALLY INNER WALL AND A LATERALLY OUTER WALL; EACH LUG HAVING A PAIR OF LATERAL APERTURES SYMMETRICALLY DISPOSED FROM THE ARCUATE CENTERLINE OF THE CLAMP SEGMENT AND EXTENDING BETWEEN INTERSECTION WITH THE RESPECTIVE LUG LATERALLY INNER WALL AND THE LUG LATERALLY OUTER WALL, EACH APERTURE HAVING MEANS DEFINING AN OUTWARDLY CONCAVE SPHERICALLY CURVED ANNULAR RECESS IN THE LATERALLY OUTER WALL OF THE RESPECTIVE LUG PERIPHERALLY IMMEDIATELY ADJACENT AND RADIALLY INWARDLY DELIMITED BY EACH INTERSECTION OF SAID APERTURES WITH SAID RESPECTIVE LUG LATERALLY OUTER WALL, AND EACH RESPECTIVE APERTURE BEING THEREBY CONSTRUCTED AND ARRANGED TO RECEIVE AGAINST THE RESPECTIVE SPHERICALLY CURVED ANNULAR RECESS
Claim 2
Dependent Claim
306 words
A COUPLING SEALED AGAINST THE LEAKAGE OF FLUID PRESSURE COMPRISING A PLURALITY OF COMPLEMENTARY ARCUATE CLAMP SEGMENTS; EACH SEGMENT INCLUDING AN ARCUTE ELEMENT HAVING TWO AXIALLY SPACED ARCUATE SIDES, TWO ANGULARLY SPACED ENDS, A RADIALLY INNER WALL AND A RADIALLY OUTER WALL; MEANS DEFINING A PAIR OF AXIALLY SPACED, RADIALLY INWARDLY PROJECTING, GENERALLY PARALLEL ARCUATE RIBS ON EACH CLAMP SEGMENT RADIALLY INNER WALL, EACH RIB OF EACH PAIR INCLUDING AN ARCUATE SEALING SURFACE GENERALLY FACING THE OTHER RIB OF THE PAIR AND PROJECTING RADIALLY INWARDLY OF SAID SEGMENT AND AXIALLY TOWARD THE NEAREST OF THE AXIALLY SPACED CLAMP SEGMENT ARCUATE SIDES, ON EACH SEGMENT SUBSTANTIALLY SPACED WEDGING SURFACES ON EACH SEGMENT SUBSTANTIALLY ALIGNED WITH THE LIKE WEDGING SURFACES ON EACH OTHER CLAMP SEGMENT; MEANS DEFINING AT LEAST ONE GROOVE IN EACH CLAMP SEGMENT EXTENDING SUBSTANTIALLY TRANSVERSELY TO SAID RIBS ON SAID SEGMENT RADIALLY INNER WALL; EACH GROOVE HAVING A DEPTH AT LEAST AS GREAT AS THE OUTWARD RADIAL EXTENT OF EACH RIB, SAID GROOVE INTERSECTING EACH RIB ON SAID SEGMENT; SECUREMENT MEANS ON SAID SEGMENTS ADJACENT EACH ANGULARLY SPACED END THEREOF; EACH SECUREMENT MEANS COMPRISING A SUBSTANTIALLY RADIALLY OUTWARDLY AND AXIALLY EXTENDING LUG CLOSELY ADJACENT EACH RESPECTIVE CLAMP SEGMENT AND HAVING MEANS DEFINING A LATERALLY INNER WALL AND A LATERALLY OUTER WALL; EACH LUG HAVING A PAIR OF LATERAL APERTURES SYMMETRICALLY DISPOSED FROM THE ARCUATE CENTERLINE OF THE CLAMP SEGMENT AND EXTENDING BETWEEN INTERSECTION WITH THE RESPECTIVE LUG LATERALLY INNER WALL AND THE LUG LATERALLY OUTER WALL, EACH APERTURE HAVING MEANS DEFINING AN OUTWARDLY CONCAVE SPHERICALLY CURVED ANNULAR RECESS IN THE LATERALLY OUTER WALL OF THE RESPECTIVE LUG PERIPHERALLY IMMEDIATELY ADJACENT AND RADIALLY INWARDLY DELIMITED BY EACH INTERSECTION OF SAID APERTURES WITH SAID RESPECTIVE LUG LATERALLY OUTER WALL, AND EACH RESPECTIVE APERTURE BEING THEREBY CONSTRUCTED AND ARRANGED TO RECEIVE AGAINST THE RESPECTIVE SPHERICALLY CURVED ANNULAR RECESS
References Cited (Backward Citations)
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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) | 1971-10-01 | 1972-04-01 | 1972-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-01 | 1976-04-01 | 1976-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-01 | 1980-04-01 | 1980-10-01 | $7700.00 | Window Closed / Lapsed |