Patent US3233693A successfully refreshed from Google Patents.
US3233693A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ground effect machine
Assignee: Individual
•
Filing: 1965-02-17
•
Granted: 1966-02-08
•
Expires: 1985-02-17
Abstract
No abstract record available.
Inventors
- 👤 Lewis W Havercamp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:09
CPC Classifications
B; B60; B60V; B60V1/00; B60V1/04; B60V1/046
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
A GROUND EFFECT MACHINE COMPRISING AN AIRFRAME FOR CONFINING A CUSHION OF PRESSURIZED AIR ON WHICH THE MACHINE IS SUPPORTABLE IN GROUND EFFECT HAVING AN EXIT ORIFICE AT WHICH THE CUSHION CONTACTS THE GROUND AND THROUGH WHICH AIR ESCAPES FROM THE AIRFRAME WHEN THE MACHINE IS SUPPORTED ON THE CUSHION AND FURTHER HAVING A TOP WALL OVER THE EXIT ORIFICE WHICH HAS AN OPENING THROUGH WHICH AIR IS ADMISSIBLE TO THE AIRFRAME, AND AN AIR PUMP CARRIED BY SAID TOP WALL FOR PASSING AIR INTO SAID AIRFRAME THROUGH SAID OPENING, SAID AIRFRAME COMPRISING A FLEXIBLE CANOPY SECTION ADAPTED AND ARRANGED TO CONTACT THE CUSHION AND TO BE OUTWARDLY INFLATED BY
Claim 2
Dependent Claim
110 words
A GROUND EFFECT MACHINE COMPRISING AN AIRFRAME FOR CONFINING A CUSHION OF PRESSURIZED AIR ON WHICH THE MACHINE IS SUPPORTABLE IN GROUND EFFECT HAVING AN EXIT ORIFICE AT WHICH THE CUSHION CONTACTS THE GROUND AND THROUGH WHICH AIR ESCAPES FROM THE AIRFRAME WHEN THE MACHINE IS SUPPORTED ON THE CUSHION AND FURTHER HAVING A TOP WALL OVER THE EXIT ORIFICE WHICH HAS AN OPENING THROUGH WHICH AIR IS ADMISSIBLE TO THE AIRFRAME, AND AN AIR PUMP CARRIED BY SAID TOP WALL FOR PASSING AIR INTO SAID AIRFRAME THROUGH SAID OPENING, SAID AIRFRAME COMPRISING A FLEXIBLE CANOPY SECTION ADAPTED AND ARRANGED TO CONTACT THE CUSHION AND TO BE OUTWARDLY INFLATED BY
References Cited (Backward Citations)
US1123589A
Cited
FR1238499A
Cited
US3042129A
Cited
US3066753A
Cited
US3118513A
Cited
US3139947A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-02-07 | 1969-08-09 | 1970-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-07 | 1973-08-09 | 1974-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-07 | 1977-08-09 | 1978-02-08 | $7700.00 | Window Closed / Lapsed |