Patent US3168334A successfully refreshed from Google Patents.
US3168334A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flexible pipe joint
Assignee: Shell USA Inc
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Filing: 1961-11-28
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Granted: 1965-02-02
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Expires: 1981-11-28
Abstract
No abstract record available.
Inventors
- 👤 Glenn D Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:09
CPC Classifications
F; F16; F16L; F16L27/00; F16L27/10; F16L27/107; E; E21; E21B; E21B17/00; E21B17/02; E21B17/08; E21B17/085; F16L27/1021; Y; Y10; Y10T; Y10T403/00; Y10T403/45; Y10T403/453
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
182 words
A FLEXIBLE PIPE JOINT ASSEMBLY FOR FLEXIBLE CONNECTING TWO SECTIONS OF PIPE TOGETHER, SAID PIPE JOINT ASSEMBLY COMPRISING A PAIR OF OUTWARDLY-EXTENDING END FLANGES, MEANS ON EACH END FLANGE FOR SECURING SAID FLANGE COAXIALLY TO ONE PIPE SECTION, A PLURALITY OF RESILIENT COMPRESSION RINGS ARRANGED BETWEEN SAID END FLANGES, RIGID SEPARATOR RING POSITIONED BETWEEN EACH PAIR OF COMPRESSION RINGS, SAID COMPRESSION RINGS AND SAID SEPARATOR RINGS HAVING A CENTRAL OPENING ALIGNED WITH THE BORE OF SAID PIPE SECTIONS, CONNECTOR MEANS EXTENDING BETWEEN SAID FLANGES AND SECURED THERETO FOR APPLYING TENSION TO PLACE THE COMPRESSION RINGS IN COMPRESSION, THE SPACING BETWEEN SAID FLANGES BEING ADJUSTED SO THAT THE COMPRESSION RINGS ARE IN FLUIDTIGHT ENGAGEMENT WITH SAID SEPARATOR RINGS AT ALL TIMES, A REPLACEABLE AXIALLY FLEXIBLE METALLIC WEAR LINER CARRIED BY SAID ASSEMBLY BETWEEN THE FLANGES THEREOF, SAID FLEXIBLE METALLIC WEAR LINER INCLUDING A SPACER RING POSITIONED BETWEEN EACH PAIR OF SEPARATOR RINGS AND BETWEEN SAID SEPARATOR RINGS AND SAID FLANGES ADJACENT EACH COMPRESSION RING, SAID SPACER RINGS BETWEEN SAID SEPARATOR RINGS BEING OF A SIZE SO LIMIT THE COMPRESSION OF SAID COMPRESSION RINGS.
Claim 2
Dependent Claim
182 words
A FLEXIBLE PIPE JOINT ASSEMBLY FOR FLEXIBLE CONNECTING TWO SECTIONS OF PIPE TOGETHER, SAID PIPE JOINT ASSEMBLY COMPRISING A PAIR OF OUTWARDLY-EXTENDING END FLANGES, MEANS ON EACH END FLANGE FOR SECURING SAID FLANGE COAXIALLY TO ONE PIPE SECTION, A PLURALITY OF RESILIENT COMPRESSION RINGS ARRANGED BETWEEN SAID END FLANGES, RIGID SEPARATOR RING POSITIONED BETWEEN EACH PAIR OF COMPRESSION RINGS, SAID COMPRESSION RINGS AND SAID SEPARATOR RINGS HAVING A CENTRAL OPENING ALIGNED WITH THE BORE OF SAID PIPE SECTIONS, CONNECTOR MEANS EXTENDING BETWEEN SAID FLANGES AND SECURED THERETO FOR APPLYING TENSION TO PLACE THE COMPRESSION RINGS IN COMPRESSION, THE SPACING BETWEEN SAID FLANGES BEING ADJUSTED SO THAT THE COMPRESSION RINGS ARE IN FLUIDTIGHT ENGAGEMENT WITH SAID SEPARATOR RINGS AT ALL TIMES, A REPLACEABLE AXIALLY FLEXIBLE METALLIC WEAR LINER CARRIED BY SAID ASSEMBLY BETWEEN THE FLANGES THEREOF, SAID FLEXIBLE METALLIC WEAR LINER INCLUDING A SPACER RING POSITIONED BETWEEN EACH PAIR OF SEPARATOR RINGS AND BETWEEN SAID SEPARATOR RINGS AND SAID FLANGES ADJACENT EACH COMPRESSION RING, SAID SPACER RINGS BETWEEN SAID SEPARATOR RINGS BEING OF A SIZE SO LIMIT THE COMPRESSION OF SAID COMPRESSION RINGS.
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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) | 1968-02-02 | 1968-08-03 | 1969-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-02 | 1972-08-03 | 1973-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-02 | 1976-08-03 | 1977-02-02 | $7700.00 | Window Closed / Lapsed |