US3091280A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Corrugated tubing
Assignee: Individual
•
Filing: 1961-05-15
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Granted: 1963-05-28
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Expires: 1981-05-15
Abstract
No abstract record available.
Inventors
- 👤 Joseph W Yowell
- 👤 Donald B Miner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:21
CPC Classifications
F; F16; F16L; F16L11/00; F16L11/14; F16L11/15; B; B21; B21D; B21D15/00; B21D15/04; B21D15/10; B21D26/00; B21D26/02; B21D26/033; B21D26/043; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49805
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
123 words
THE METHOD OF FORMING INTERNAL PRESSURE CORRUGATED TUBING FROM A TUBING WHICH HAS CORRUGATED SIDE WALLS HAVING A PLURALITY OF FLAT, SPACED, COAXIAL PORTIONS LYING GENERALLY IN EQUISPACED RADIAL PLANES AND INNER AND OUTER CONNECTOR PORTIONS CONNECTING TOGETHER SAID FLAT PORTIONS, WITH THE INNER CONNECTOR PORTIONS BEING SUBSTANTIALLY FLAT AND THE OUTER PORTIONS CIRCULAR, WHICH INCLUDES THE STEPS OF ELONGATING THE TUBING TO CAUSE THE FLAT SPACED PORTIONS TO BE RADIALLY INWARDLY DIVERGING; SUBJECTING THE INTERIOR OF SAID CORRUGATED WALLS OF THE TUBING A FLUID PRESSURE SUFFICIENT TO PERMANENTLY CURVE OUTWARD THE SAID DIVERGING FLAT PORTIONS OF THE WALLS AND CAUSE SAID PERMANENTLY CURVED PORTIONS TO CONSTITUTE SUBSTANTIALLY CONTINUATIONS OF THE CURVES OF THE OUTER CIRCULAR CONNECTOR PORTIONS AND SIMULTANEOUSLY CONTRACTING THE TUBING.
Claim 2
Independent Claim
123 words
THE METHOD OF FORMING INTERNAL PRESSURE CORRUGATED TUBING FROM A TUBING WHICH HAS CORRUGATED SIDE WALLS HAVING A PLURALITY OF FLAT, SPACED, COAXIAL PORTIONS LYING GENERALLY IN EQUISPACED RADIAL PLANES AND INNER AND OUTER CONNECTOR PORTIONS CONNECTING TOGETHER SAID FLAT PORTIONS, WITH THE INNER CONNECTOR PORTIONS BEING SUBSTANTIALLY FLAT AND THE OUTER PORTIONS CIRCULAR, WHICH INCLUDES THE STEPS OF ELONGATING THE TUBING TO CAUSE THE FLAT SPACED PORTIONS TO BE RADIALLY INWARDLY DIVERGING; SUBJECTING THE INTERIOR OF SAID CORRUGATED WALLS OF THE TUBING A FLUID PRESSURE SUFFICIENT TO PERMANENTLY CURVE OUTWARD THE SAID DIVERGING FLAT PORTIONS OF THE WALLS AND CAUSE SAID PERMANENTLY CURVED PORTIONS TO CONSTITUTE SUBSTANTIALLY CONTINUATIONS OF THE CURVES OF THE OUTER CIRCULAR CONNECTOR PORTIONS AND SIMULTANEOUSLY CONTRACTING THE TUBING.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-05-27 | 1966-11-26 | 1967-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-27 | 1970-11-26 | 1971-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-27 | 1974-11-26 | 1975-05-28 | $7700.00 | Window Closed / Lapsed |