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US3204932A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Inflatable jack structures
Assignee: Hovercraft Development Ltd
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Filing: 1963-03-14
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Granted: 1965-09-07
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Expires: 1983-03-14
Abstract
No abstract record available.
Inventors
- 👤 Needham Ernest Frederick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:00
CPC Classifications
B; B60; B60V; B60V1/00; B60V1/04; B60V1/046; B60V1/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
152 words
AN INFLATABLE DEFORMABLE STRUCTURE COMPRISING A BASE PLATFORM, A LOAD BEARING PLATFORM SPACED FROM SAID BASE PLATFORM IN A DIRECTION NORMAL THERETO AND EXTENDING SUBSTANTIALLY PARALLEL TO SAID BASE PLATFORM, MEANS INCLUDING AT LEAST TWO FLEXIBLE SIDE MEMBERS CONNECTING SAID PLATFORMS TO FORM AN INFLATABLE ENCLOSURE, THE CROSSSECTION OF SAID ENCLOSURE CONTINUOUSLY VARYING FROM ONE PLATFORM TOWARDS THE OTHERS PLATFORM, A PLURALITY OF CONSTRAINING MEMBERS OF INEXTENSIBLE MATERIAL CONNECTING SAID SIDE MEMBERS, THE LENGTHS OF SAID CONSTRAINING MEMBERS VARYING BETWEEN A MINIMUM AND A MAXIMUM TO DEFINE THE VARIATION IN CROSS-SECTION OF THE ENCLOSURE, EACH OF SAID PLATFORMS BEING OF A SIZE AND SHAPE AT LEAST EQUAL TO THE LARGEST CROSS-SECTION OF THE ENCLOSURE, AND MEANS FOR SUPPLYING INFLATION GAS AT A PREDETERMINED PRESSURE TO THE INTERIOR OF SAID ENCLOSURE AND FOR RELEASING GAS FROM THE ENCLOSURE ON DEFORMATION OF THE STRUCTURE TO MAINTAIN THE INFLATION PRESSURE IN SAID ENCLOSURE SUBSTANTIALLY CONSTANT.
Claim 2
Dependent Claim
152 words
AN INFLATABLE DEFORMABLE STRUCTURE COMPRISING A BASE PLATFORM, A LOAD BEARING PLATFORM SPACED FROM SAID BASE PLATFORM IN A DIRECTION NORMAL THERETO AND EXTENDING SUBSTANTIALLY PARALLEL TO SAID BASE PLATFORM, MEANS INCLUDING AT LEAST TWO FLEXIBLE SIDE MEMBERS CONNECTING SAID PLATFORMS TO FORM AN INFLATABLE ENCLOSURE, THE CROSSSECTION OF SAID ENCLOSURE CONTINUOUSLY VARYING FROM ONE PLATFORM TOWARDS THE OTHERS PLATFORM, A PLURALITY OF CONSTRAINING MEMBERS OF INEXTENSIBLE MATERIAL CONNECTING SAID SIDE MEMBERS, THE LENGTHS OF SAID CONSTRAINING MEMBERS VARYING BETWEEN A MINIMUM AND A MAXIMUM TO DEFINE THE VARIATION IN CROSS-SECTION OF THE ENCLOSURE, EACH OF SAID PLATFORMS BEING OF A SIZE AND SHAPE AT LEAST EQUAL TO THE LARGEST CROSS-SECTION OF THE ENCLOSURE, AND MEANS FOR SUPPLYING INFLATION GAS AT A PREDETERMINED PRESSURE TO THE INTERIOR OF SAID ENCLOSURE AND FOR RELEASING GAS FROM THE ENCLOSURE ON DEFORMATION OF THE STRUCTURE TO MAINTAIN THE INFLATION PRESSURE IN SAID ENCLOSURE SUBSTANTIALLY CONSTANT.
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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) | 1968-09-06 | 1969-03-08 | 1969-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-06 | 1973-03-08 | 1973-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-06 | 1977-03-08 | 1977-09-07 | $7700.00 | Window Closed / Lapsed |