US3216518A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control device for air cushion vehicles
Assignee: Individual
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Filing: 1961-11-07
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Granted: 1965-11-09
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Expires: 1981-11-07
Abstract
No abstract record available.
Inventors
- 👤 Melville W Beardsley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:16
CPC Classifications
B; B60; B60V; B60V1/00; B60V1/02; B60V1/11; B60V1/115
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
132 words
AN AIR CUSHION VEHICLE WITH MEANS TO CONTROL THE DIRECTION OF MOVEMENT OF THE VEHICLE OVER A SURFACE COMPRISING A BODY SHELL FORMING A PLENUM CHAMBER, BOTTOM STRUCTURE OF THE PLENUM CHAMBER SPACED AROUND ITS PERIPHERY FROM SAID BODT SHELL, MEANS TO FORCE AIR INTO SAID BODY SHELL AND OUT AROUND THE PERIPHERY OF SAID BOTTOM STRUCTURE, MEANS FOR SHIFTING THE CENTER OF GRAVITY OF THE VEHICLE LATERALLY, AND FULCRUM MEANS SECURED TO SAID VEHICLE AND IN CONTACT WITH SAID SURFACE BEHIND THE CENTER OF GRAVITY OF THE VEHICLE FOR RESTRICTING THE LATERAL TRANSLATION OF THE VEHICLE, WHEREBY A SHIFTING OF THE CENTER OF GRAVITY OF THE VEHICLE IN A LATERAL DIRECTION CREATES A FORCE IN CONJUNCTION WITH SAID FULCRUM MEANS FOR RESTRICTING THE LATERAL TRANSLATION WHICH CONVERTS THE TRANSLATION INTO ROTATION.
Claim 2
Dependent Claim
132 words
AN AIR CUSHION VEHICLE WITH MEANS TO CONTROL THE DIRECTION OF MOVEMENT OF THE VEHICLE OVER A SURFACE COMPRISING A BODY SHELL FORMING A PLENUM CHAMBER, BOTTOM STRUCTURE OF THE PLENUM CHAMBER SPACED AROUND ITS PERIPHERY FROM SAID BODT SHELL, MEANS TO FORCE AIR INTO SAID BODY SHELL AND OUT AROUND THE PERIPHERY OF SAID BOTTOM STRUCTURE, MEANS FOR SHIFTING THE CENTER OF GRAVITY OF THE VEHICLE LATERALLY, AND FULCRUM MEANS SECURED TO SAID VEHICLE AND IN CONTACT WITH SAID SURFACE BEHIND THE CENTER OF GRAVITY OF THE VEHICLE FOR RESTRICTING THE LATERAL TRANSLATION OF THE VEHICLE, WHEREBY A SHIFTING OF THE CENTER OF GRAVITY OF THE VEHICLE IN A LATERAL DIRECTION CREATES A FORCE IN CONJUNCTION WITH SAID FULCRUM MEANS FOR RESTRICTING THE LATERAL TRANSLATION WHICH CONVERTS THE TRANSLATION INTO ROTATION.
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) | 1968-11-08 | 1969-05-10 | 1969-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-08 | 1973-05-10 | 1973-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-08 | 1977-05-10 | 1977-11-09 | $7700.00 | Window Closed / Lapsed |