US3301343A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Inflatable buoyancy chambers with vehicles equipped therewith
Assignee: Westland Group PLC
•
Filing: 1964-07-02
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Granted: 1967-01-31
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Expires: 1984-07-02
Abstract
No abstract record available.
Inventors
- 👤 Hardy Derek James
- 👤 Smith Michael Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:28
CPC Classifications
B; B60; B60V; B60V1/00; B60V1/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
147 words
A PLIABLE BUOYANCY CHAMBER DEFINED OVER AT LEAST A MAJOR PORTION OF ITS SURFACE BY A PLIABLE SKIN AND FURNISHED WITH APERTURES THROUGH WHICH GAS MAY BE ADMITTED INTO THE CHAMBER TO INFLATE THE SKIN AND SUCKED OUT OF THE CHAMBER TO CAUSE THE SKIN TO COLLAPSE, AND A COLLAPSIBLE RIGID LINKAGE ASSEMBLY INSIDE THE CHAMBER FOR FOLDING INTO A SUBSTANTIALLY FLAT PLANE VERY CLOSE TO A WALL FORMING PART OF THE BOUNDRY OF THE CHAMBER AND FOR GOVERNING THE FOLDING OF THE SKIN IN COLLAPSING SO AS TO PROVIDE A FLAT COLLAPSED PACK WHEN DEFLATED, SAID BUOYANCY CHAMBER WHEN INFLATED PRESENTING LOBES IN CROSS-SECTION, THE LOBES INCLUDING A CENTRAL LOBE HAVING A PLIABLE SKIN WHICH COVERS THE SKINS OF THE OTHER LOBES WHEN THE CHAMBER IS IN THE COLLAPSED CONDITION, THE SKINS OF THE OTHER LOBES THEN BEING FOLDED BENEATH THE SKIN OF THE CENTRAL LOBE,
Claim 2
Dependent Claim
147 words
A PLIABLE BUOYANCY CHAMBER DEFINED OVER AT LEAST A MAJOR PORTION OF ITS SURFACE BY A PLIABLE SKIN AND FURNISHED WITH APERTURES THROUGH WHICH GAS MAY BE ADMITTED INTO THE CHAMBER TO INFLATE THE SKIN AND SUCKED OUT OF THE CHAMBER TO CAUSE THE SKIN TO COLLAPSE, AND A COLLAPSIBLE RIGID LINKAGE ASSEMBLY INSIDE THE CHAMBER FOR FOLDING INTO A SUBSTANTIALLY FLAT PLANE VERY CLOSE TO A WALL FORMING PART OF THE BOUNDRY OF THE CHAMBER AND FOR GOVERNING THE FOLDING OF THE SKIN IN COLLAPSING SO AS TO PROVIDE A FLAT COLLAPSED PACK WHEN DEFLATED, SAID BUOYANCY CHAMBER WHEN INFLATED PRESENTING LOBES IN CROSS-SECTION, THE LOBES INCLUDING A CENTRAL LOBE HAVING A PLIABLE SKIN WHICH COVERS THE SKINS OF THE OTHER LOBES WHEN THE CHAMBER IS IN THE COLLAPSED CONDITION, THE SKINS OF THE OTHER LOBES THEN BEING FOLDED BENEATH THE SKIN OF THE CENTRAL LOBE,
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) | 1970-01-30 | 1970-08-01 | 1971-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-30 | 1974-08-01 | 1975-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-30 | 1978-08-01 | 1979-01-31 | $7700.00 | Window Closed / Lapsed |