US3352579A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bell and spigot clamp
Assignee: Dresser Industries Inc
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Filing: 1964-12-23
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Granted: 1967-11-14
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Expires: 1984-12-23
Abstract
No abstract record available.
Inventors
- 👤 Howard L Hoke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 06:09
CPC Classifications
F; F16; F16L; F16L21/00; F16L21/08; F16L23/00; F16L23/04; F16L55/00; F16L55/16; F16L55/168; F16L55/178
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
346 words
A BELL AND SPIGOT REPAIR CLAMP COMPRISING A BELL RING, A SPIGOT RING, AND CLAMPING BOLTS FOR DRAWING SAID RINGS TOGETHER, SAID BELL RING COMPRISING A PLURALITY OF ARCUATE SECTIONS EACH INCLUDING A RADIAL BODY PORTION HAVING SPACED ENLARGEMENTS, EACH OF WHICH IS FORMED WITH A BOLT HOLE FOR A CLAMPING BOLT, A RADIAL REINFORCING WEB FOR EACH ENLARGEMENT INTEGRAL WITH SAID RADIAL BODY, AN OUTER AXIAL FLANGE EXTENDING IN ONE DIRECTION AND INTEGRAL WITH SAID RADIAL BODY AND AN INNERMOST AXIAL FLANGE EXTENDING IN A DIRECTION OPPOSITE TO THE FIRST AND SAID AXIAL FLANGE, SAID LAST MENTIONED FLANGE ON THE SEVERAL SECTIONS DEFINING THE TENSION EDGE OF SAID RING, INTERLOCKING TEETH ON ADJACENT SECTIONS EXTENDING OUTWARD ON SAID RADIAL BODY SUBSTANTIALLY FROM A LINE OF CURVATURE WHICH IS IN ARCUATE CONTINUATION WITH SAID TENSION EDGE, ADJACENT SECTIONS BEING FORMED WITH ALIGNED BOLT HOLES RADIALLY OUTWARDLY OF SAID TENSION EDGE TO RECEIVE BOLTS PASSING THROUGH SAID ALIGNED BOLT HOLES TO MAINTAIN SAID INTERLOCKING TEETH IN ENGAGEMENT AND SECURED THE SECTIONS IN ASSEMBLED RELATION, SAID SPIGOT RING COMPRISING A PLURALITY OF ARCUATE SECTIONS EACH INCLUDING AN AXIALLY EXTENDING MAIN BODY PORTION, AN OUTER RADIAL FLANGE INTEGRAL WITH SAID MAIN BODY PORTION AND FORMED WITH A PLURALITY OF SPACED ENLARGEMENTS WITH EACH ENLARGEMENT HAVING A BOLT HOLE FOR A CLAMPING BOLT, A PAIR OF RADIAL WEBS INTEGRAL WITH SAID ENLARGEMENT AND SAID BODY PORTION WITH EACH WEB BEING LOCATED AT ONE SIDE OF THE BOLT IN THAT ENLARGEMENT AND A PAIR OF WEBS INTEGRALLY JOINED AT THEIR OUTER ENDS BY A BAND, AN INNER RADIAL FLANGE INTEGRAL WITH SAID MAIN BODY PORTION, THERE BEING A PLURALITY OF AXIALLY AND RADIALLY EXTENDING REINFORCING WEBS INTEGRAL WITH SAID MAIN BODY PORTION AND INNER FLANGE, INTERLOCKING TEETH ON THE OVERLAPPING ENDS OF ADJACENT SECTIONS LOCATED RADIALLY OUTWARD OF THE INNER RADIAL FLANGE THEREOF, SAID OVERLAPPING ENDS BEING FORMED WITH ALIGNED BOLT HOLES RADIALLY OUTWARDLY OF SAID TEETH AND A BOLT PASSING THROUGH EACH SET OF ALIGNED BOLT HOLES FOR MAINTAINING SAID TEETH IN INTERLOCKING ENGAGEMENT AND SAID SECTIONS IN ASSEMBLED RELATION.
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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) | 1970-11-13 | 1971-05-15 | 1971-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-13 | 1975-05-15 | 1975-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-13 | 1979-05-15 | 1979-11-14 | $7700.00 | Window Closed / Lapsed |