US3207538A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tapered sheet metal pipe and joint therefor
Assignee: —
•
Filing: —
•
Granted: 1965-09-21
•
Expires: 1982-09-21
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 20:00
CPC Classifications
F; F16; F16L; F16L23/00; F16L23/04; F16L23/08; F16L23/10; F16B; F16B2200/00; F16B2200/50; F16B2200/509
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
A SHEET METAL PIPE COMPRISING, IN COMBINATION, A PLURALITY OF LONGITUDINAL SECTIONS EACH SLIGHTLY TAPERED THROUGHOUT ITS LENGTH, THE RADIUS OF THE PIPE AT ONE END OF EACH SECTION BEING LARGER THAN AT ITS OPPOSITE END BY A DISTANCE CORRESPONDING SUBSTANTIALLY TO THE THICKNESS OF THE MATERIAL, WHEREBY THE SMALLER END OF ONE SECTION IS RECEIVED TELESCOPICALLY IN THE LARGER END OF AN ADJOINING SECTION AND IS SECURED THEREIN PARTLY BY FRICTION FIT, THE OPPOSITE ENDS OF EACH SECTION HAVING PERIPHERAL BEADS, AND A DRAW BAND HAVING CORRESPONDING CIRCUMFERENTIAL GROOVES EMBRACING THE PERIPHERAL BEAD ON THE ADJACENT ENDS OF ADJOINING SECTIONS WHEREBY THE SECTIONS ARE POSITIVELY SECURED AGAINST LONGITUDINAL DISPLACEMENT RELATIVE TO EACH OTHER, THE PERIPHERAL BED ON THE LARGER END OF
Claim 2
Dependent Claim
122 words
A SHEET METAL PIPE COMPRISING, IN COMBINATION, A PLURALITY OF LONGITUDINAL SECTIONS EACH SLIGHTLY TAPERED THROUGHOUT ITS LENGTH, THE RADIUS OF THE PIPE AT ONE END OF EACH SECTION BEING LARGER THAN AT ITS OPPOSITE END BY A DISTANCE CORRESPONDING SUBSTANTIALLY TO THE THICKNESS OF THE MATERIAL, WHEREBY THE SMALLER END OF ONE SECTION IS RECEIVED TELESCOPICALLY IN THE LARGER END OF AN ADJOINING SECTION AND IS SECURED THEREIN PARTLY BY FRICTION FIT, THE OPPOSITE ENDS OF EACH SECTION HAVING PERIPHERAL BEADS, AND A DRAW BAND HAVING CORRESPONDING CIRCUMFERENTIAL GROOVES EMBRACING THE PERIPHERAL BEAD ON THE ADJACENT ENDS OF ADJOINING SECTIONS WHEREBY THE SECTIONS ARE POSITIVELY SECURED AGAINST LONGITUDINAL DISPLACEMENT RELATIVE TO EACH OTHER, THE PERIPHERAL BED ON THE LARGER END OF
References Cited (Backward Citations)
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Cited
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Cited
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Cited
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Cited
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-09-20 | 1969-03-22 | 1969-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-20 | 1973-03-22 | 1973-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-20 | 1977-03-22 | 1977-09-21 | $7700.00 | Window Closed / Lapsed |