Patent US5935005A successfully refreshed from Google Patents.
Patent US3662851A successfully refreshed from Google Patents.
US3662851A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air-cushion vehicle with brush support
Assignee: COGSWELL ARNOLD
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Filing: 1970-02-25
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Granted: 1972-05-16
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Expires: 1990-02-25
Abstract
Abstract An air-cushion vehicle has a plurality of brushes mounted on the body within the boundary of the downwardly extending peripheral wall or skirt thereof, and extending downwardly to or below the level of the peripheral wall or skirt to support the vehicle while at rest without substantial deformation of the wall or skirt. The individual flexibility of the bristles allows the brushes to pass over obstacles, or to part so as to allow an obstacle to pass therethrough.
Inventors
- 👤 Harry E Ramsey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:45
CPC Classifications
B; B60; B60V; B60V1/00; B60V1/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
156 words
An air-cushion vehicle including a body having a deformable peripheral wall or skirt of impermeable material extending downwardly therefrom and means for producing an air cushion beneath said body within the confines of said peripheral wall or skirt for raising the vehicle above a supporting surface, in which the improvement comprises a plurality of discrete separated support brushes fixedly mounted on the under side of said body a substantial distance inwardly of the boundary of said peripheral wall or skirt and spaced therefrom, said brushes extending downwardly and terminating in a plane at a level below the major portion of said peripheral wall or skirt and approximately at the level of the lower edge of said peripheral wall or skirt for supporting said vehicle in the absence of said air cushion, each said brush comprising a plurality of individually flexible bristles, the aggregate of said bristles providing stiff brushes for the said support of said vehicle.
Claim 2
Dependent Claim
156 words
An air-cushion vehicle including a body having a deformable peripheral wall or skirt of impermeable material extending downwardly therefrom and means for producing an air cushion beneath said body within the confines of said peripheral wall or skirt for raising the vehicle above a supporting surface, in which the improvement comprises a plurality of discrete separated support brushes fixedly mounted on the under side of said body a substantial distance inwardly of the boundary of said peripheral wall or skirt and spaced therefrom, said brushes extending downwardly and terminating in a plane at a level below the major portion of said peripheral wall or skirt and approximately at the level of the lower edge of said peripheral wall or skirt for supporting said vehicle in the absence of said air cushion, each said brush comprising a plurality of individually flexible bristles, the aggregate of said bristles providing stiff brushes for the said support of said vehicle.
References Cited (Backward Citations)
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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) | 1975-05-16 | 1975-11-15 | 1976-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-16 | 1979-11-15 | 1980-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-16 | 1983-11-15 | 1984-05-16 | $7700.00 | Window Closed / Lapsed |