US3166137A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flexible ducting
Assignee: Sumitomo Rubber USA LLC
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Filing: 1963-04-12
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Granted: 1965-01-19
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Expires: 1983-04-12
Abstract
No abstract record available.
Inventors
- 👤 Cooper David Henry D Oyly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:01
CPC Classifications
B; B60; B60V; B60V1/00; B60V1/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
179 words
A SKIRT FOR A HOVERCRAFT WHICH COMPRISES ADJOINING PARALLEL FOLDS OF FLEXIBLE RESILIENT SHEET MATERIAL EXTENDING FROM THE UPPER TO THE LOWER EDGE OF SAID SKIRT AND ARRANGED IN SERIES THROUGHOUT THE PERIPHERAY OF SAID SKIRT TO FORM ALTERNATE, SUBSTANTIALLY VERTICAL, INNER AND OUTER RIDGES, FOLD SUPPORTING MEMBERS, AT LEAST ONE FOR EACH PAIR OF INNER AND OUTER RIDGES OF SAID SERIES, EACH OF SAID FOLD SUPPORTING MEMBERS COMPRISING A STRIP OF FLEXIBLE, RESILIENT, MATERIAL EXTENDING FROM THE UPPER EDGE TO THE LOWER EDGE OF SAID SKIRT AND EACH BEING SECURED IN FIXED POSITION IN SAID SKIRT, AND MEANS AT THE UPPER EDGE MARGIN OF SAID SKIRT TO HOLD SAID FOLDS AND SAID FOLD-SUPPORTING MEMBERS IN FIXED POSITION WITH THE PLANE OF SAID STRIP OF EACH FOLD SUPPORTING MEMBER AT A SUBSTANTIAL ANGLE WITH THE PERIPHERAL DIRECTION OF THE PORTION OF THE SKIRT TO WHICH IT IS ATTACHED, EACH SAID STRIP HAVING SUFFICIENT STIFFNESS TO HOLD SAID SKIRT IN POSITION UNDER NORMAL OPERATING CONDITIONS AND OF SUFFICIENT RESILIENCE TO TWIST AND BEND UNDER FORCE APPLIED AT ITS LOWER END.
Claim 2
Dependent Claim
179 words
A SKIRT FOR A HOVERCRAFT WHICH COMPRISES ADJOINING PARALLEL FOLDS OF FLEXIBLE RESILIENT SHEET MATERIAL EXTENDING FROM THE UPPER TO THE LOWER EDGE OF SAID SKIRT AND ARRANGED IN SERIES THROUGHOUT THE PERIPHERAY OF SAID SKIRT TO FORM ALTERNATE, SUBSTANTIALLY VERTICAL, INNER AND OUTER RIDGES, FOLD SUPPORTING MEMBERS, AT LEAST ONE FOR EACH PAIR OF INNER AND OUTER RIDGES OF SAID SERIES, EACH OF SAID FOLD SUPPORTING MEMBERS COMPRISING A STRIP OF FLEXIBLE, RESILIENT, MATERIAL EXTENDING FROM THE UPPER EDGE TO THE LOWER EDGE OF SAID SKIRT AND EACH BEING SECURED IN FIXED POSITION IN SAID SKIRT, AND MEANS AT THE UPPER EDGE MARGIN OF SAID SKIRT TO HOLD SAID FOLDS AND SAID FOLD-SUPPORTING MEMBERS IN FIXED POSITION WITH THE PLANE OF SAID STRIP OF EACH FOLD SUPPORTING MEMBER AT A SUBSTANTIAL ANGLE WITH THE PERIPHERAL DIRECTION OF THE PORTION OF THE SKIRT TO WHICH IT IS ATTACHED, EACH SAID STRIP HAVING SUFFICIENT STIFFNESS TO HOLD SAID SKIRT IN POSITION UNDER NORMAL OPERATING CONDITIONS AND OF SUFFICIENT RESILIENCE TO TWIST AND BEND UNDER FORCE APPLIED AT ITS LOWER END.
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) | 1968-01-19 | 1968-07-20 | 1969-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-01-19 | 1972-07-20 | 1973-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-01-19 | 1976-07-20 | 1977-01-19 | $7700.00 | Window Closed / Lapsed |