Patent US3252483A successfully refreshed from Google Patents.
US3252483A
Expired / Lapsed
US
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Flexible hose
Assignee: Airco Inc
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Filing: 1963-11-26
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Granted: 1966-05-24
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Expires: 1983-11-26
Abstract
No abstract record available.
Inventors
- 👤 Alfred H Swan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:26
CPC Classifications
F; F16; F16L; F16L11/00; F16L11/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
FLEXIBLE HOSE, COMPRISING: (A) A CONTINUOUS STRIP OF UNIFORM TRANSVERSE CROSS SECTION ALONG ITS LENGTH INCLUDING A RELATIVELY THICK RIB AND A RELATIVELY THIN CONTINUOUS MARGINAL FLANGE ALONG AT LEAST ONE EDGE OF SAID STRIP; (B) SAID STRIP BEING HELICALLY COILED WITH ITS CONVOLUTIONS IN UNATTACHED SEPARABLE ABUTMENT FORMING A CONTINUOUS INNER WALL MEMBER TO RESIST AXIAL COMPRESSION, SAID RIB FORMING AN OUTWARDLY PROJECTING HELICAL REINFORCEMENT RESISTING RADIAL COLLAPSE; (C) SAID MARGINAL FLANGE BEING DISPOSED SO AS TO FORM THE BOTTOM OF A RELATIVELY DEEP EXTERNAL HELICAL CHANNEL BETWEEN THE CONVOLUTIONS OF SAID RIB; (D) AND A PLIABLE WEB HELICALLY WRAPPED ABOUT THE LENGTH OF THE COILED INNER WALL MEMBER AT ESSENTIALLY THE SAME PITCH AS THE CONVOLUTIONS OF SAID INNER WALL
Claim 2
Dependent Claim
122 words
FLEXIBLE HOSE, COMPRISING: (A) A CONTINUOUS STRIP OF UNIFORM TRANSVERSE CROSS SECTION ALONG ITS LENGTH INCLUDING A RELATIVELY THICK RIB AND A RELATIVELY THIN CONTINUOUS MARGINAL FLANGE ALONG AT LEAST ONE EDGE OF SAID STRIP; (B) SAID STRIP BEING HELICALLY COILED WITH ITS CONVOLUTIONS IN UNATTACHED SEPARABLE ABUTMENT FORMING A CONTINUOUS INNER WALL MEMBER TO RESIST AXIAL COMPRESSION, SAID RIB FORMING AN OUTWARDLY PROJECTING HELICAL REINFORCEMENT RESISTING RADIAL COLLAPSE; (C) SAID MARGINAL FLANGE BEING DISPOSED SO AS TO FORM THE BOTTOM OF A RELATIVELY DEEP EXTERNAL HELICAL CHANNEL BETWEEN THE CONVOLUTIONS OF SAID RIB; (D) AND A PLIABLE WEB HELICALLY WRAPPED ABOUT THE LENGTH OF THE COILED INNER WALL MEMBER AT ESSENTIALLY THE SAME PITCH AS THE CONVOLUTIONS OF SAID INNER WALL
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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) | 1969-05-23 | 1969-11-22 | 1970-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-23 | 1973-11-22 | 1974-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-23 | 1977-11-22 | 1978-05-24 | $7700.00 | Window Closed / Lapsed |