Patent US3231037A successfully refreshed from Google Patents.
US3231037A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Deformable nozzle structures
Assignee: Hovercraft Development Ltd
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Filing: 1963-01-02
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Granted: 1966-01-25
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Expires: 1983-01-02
Abstract
No abstract record available.
Inventors
- 👤 Needham Ernest Frederick
- 👤 Page Reginald Bannerman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 04:41
CPC Classifications
B; B60; B60V; B60V1/00; B60V1/02; B60V1/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
A FLEXIBLE NOZZLE FORMED BY A PAIR OF INFLATABLE STRUCTURES SPACED APART FROM EACH OTHER TO DEFINE THE NOZZLE PASSAGEWAYS THEREBETWEEN, EACH STRUCTURE BEING CONSTRAINED TO ASSUME, WHEN INFLATED, A PREDETERMINED SHAPE AND COMPRISING AT LEAST TWO FLEXIBLE WALLS BOUNDING AT LEAST IN PART A SPACE OF VARIABLE VOLUMNE WITHIN SAID STRUCTURE ADAPTED TO RECEIVE AN INFLATING GAS, CONSTRAINING MEANS CONNECTING SAID FLEXIBLE WALLS, MEANS FORMING A RECUPERATION REGION OF FIXED VOLUME ASSOCIATED WITH SAID SPACE, MEANS FOR SUPPLYING A GAS UNDER PRESSURE TO SAID SPACE TO INFLATE SAID STRUCTURE, AND MEANS CONNECTING SAID SPACE AND SAID RECUPERATION REGION WHEREBY GAS MAY FLOW BETWEEN SAID SPACE AND SAID REGION ON DEFORMATION OF SAID STRUCTURE TO REDUCE VARIATIONS IN PRESSURE IN SAID SPACE.
Claim 2
Dependent Claim
122 words
A FLEXIBLE NOZZLE FORMED BY A PAIR OF INFLATABLE STRUCTURES SPACED APART FROM EACH OTHER TO DEFINE THE NOZZLE PASSAGEWAYS THEREBETWEEN, EACH STRUCTURE BEING CONSTRAINED TO ASSUME, WHEN INFLATED, A PREDETERMINED SHAPE AND COMPRISING AT LEAST TWO FLEXIBLE WALLS BOUNDING AT LEAST IN PART A SPACE OF VARIABLE VOLUMNE WITHIN SAID STRUCTURE ADAPTED TO RECEIVE AN INFLATING GAS, CONSTRAINING MEANS CONNECTING SAID FLEXIBLE WALLS, MEANS FORMING A RECUPERATION REGION OF FIXED VOLUME ASSOCIATED WITH SAID SPACE, MEANS FOR SUPPLYING A GAS UNDER PRESSURE TO SAID SPACE TO INFLATE SAID STRUCTURE, AND MEANS CONNECTING SAID SPACE AND SAID RECUPERATION REGION WHEREBY GAS MAY FLOW BETWEEN SAID SPACE AND SAID REGION ON DEFORMATION OF SAID STRUCTURE TO REDUCE VARIATIONS IN PRESSURE IN SAID SPACE.
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) | 1969-01-24 | 1969-07-26 | 1970-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-24 | 1973-07-26 | 1974-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-24 | 1977-07-26 | 1978-01-25 | $7700.00 | Window Closed / Lapsed |