US3342279A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control system for surface effect machines
Assignee: Individual
•
Filing: 1966-06-17
•
Granted: 1967-09-19
•
Expires: 1986-06-17
Abstract
No abstract record available.
Inventors
- 👤 Downhill Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 10:39
CPC Classifications
B; B60; B60V; B60V1/00; B60V1/04; B60V1/11
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
150 words
A CONTROL DEVICE FOR TRANSPORT MACHINES SUPPORTED AND MOVABLE ON A CUSHION OF PRESSURIZED AIR THEREBENEATH COMPRISING VERTICALLY SPACED WALLS DEFINING A PLENUM CHAMBER THEREBETWEEN, PORTS IN THE BOTTOM WALL IN COMMUNICATION WITH THE PLENUM CHAMBER AND AIR CUSHION THEREBENEATH AND SPACED APART LENGTHWISE OF THE MACHINE, VALVES HAVING GENERALLY CONVEX LOWER SURFACES NORMALLY SEATED IN SAID PORTS AND BEING MOUNTED ON THE MACHINE FOR UNIVERSALLY TILTING ABOUT A FULCRUM WHICH IS AT THE CENTER OF THEIR CONVEXITY, MEANS FOR SELECTIVELY TILTING A FORWARD VALVE ABOUT ITS FULCRUM TO OPEN A PREDETERMINED SIDE OF ITS PORT, AND LINKAGE MEANS CONNECTING SAID FORWARD VALVE AND A REAR VALVE FOR TRANSMITTING FORE AND AFT MOVEMENTS OF SAID FORWARD VALVE TO SAID REAR VALVES AND TRANSVERSE MOVEMENTS OPPOSITE TO THAT OF SAID FORWARD VALVE TO SAID REAR VALVES, SAID VALVES INCLUDING UPWARDLY EXTENDING CENTRAL STEMS UNIVERSALLY FULCRUMED AT THE CENTER OF THEIR CONVEXITY.
Claim 2
Dependent Claim
150 words
A CONTROL DEVICE FOR TRANSPORT MACHINES SUPPORTED AND MOVABLE ON A CUSHION OF PRESSURIZED AIR THEREBENEATH COMPRISING VERTICALLY SPACED WALLS DEFINING A PLENUM CHAMBER THEREBETWEEN, PORTS IN THE BOTTOM WALL IN COMMUNICATION WITH THE PLENUM CHAMBER AND AIR CUSHION THEREBENEATH AND SPACED APART LENGTHWISE OF THE MACHINE, VALVES HAVING GENERALLY CONVEX LOWER SURFACES NORMALLY SEATED IN SAID PORTS AND BEING MOUNTED ON THE MACHINE FOR UNIVERSALLY TILTING ABOUT A FULCRUM WHICH IS AT THE CENTER OF THEIR CONVEXITY, MEANS FOR SELECTIVELY TILTING A FORWARD VALVE ABOUT ITS FULCRUM TO OPEN A PREDETERMINED SIDE OF ITS PORT, AND LINKAGE MEANS CONNECTING SAID FORWARD VALVE AND A REAR VALVE FOR TRANSMITTING FORE AND AFT MOVEMENTS OF SAID FORWARD VALVE TO SAID REAR VALVES AND TRANSVERSE MOVEMENTS OPPOSITE TO THAT OF SAID FORWARD VALVE TO SAID REAR VALVES, SAID VALVES INCLUDING UPWARDLY EXTENDING CENTRAL STEMS UNIVERSALLY FULCRUMED AT THE CENTER OF THEIR CONVEXITY.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-09-18 | 1971-03-20 | 1971-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-18 | 1975-03-20 | 1975-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-18 | 1979-03-20 | 1979-09-19 | $7700.00 | Window Closed / Lapsed |