US3334700A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Land vehicles
Assignee: Individual
•
Filing: 1965-06-28
•
Granted: 1967-08-08
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Expires: 1985-06-28
Abstract
No abstract record available.
Inventors
- 👤 Edmund C Kennedy
- 👤 John W Pattison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:19
CPC Classifications
B; B60; B60V; B60V3/00; B60V3/02; A; A01; A01B; A01B51/00; B60V1/00; B60V1/11; B60V1/115
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
IN A VEHICLE HAVING A CHASSIS SUPPORTED ON A RUNNING GEAR COMPRISING GROUND ENGAGING TRACTION MEMBERS SUCH AS WHEELS OR RUNNERS, A LOAD BEARING FRAME MOUNTED FOR LIMITED RELATIVE VERTICAL MOVEMENT ON SAID CHASSIS, MEANS FOR MAINTAINING A PRESSURIZED AIR CUSHION BENEATH SAID VEHICLE PROVIDING SUPPLEMENTARY SUPPORT LIFTING SAID LOAD BEARING FRAME RELATIVE TO THE CHASSIS AS THE VEHICLE MOVES ALONG THE GROUND, AND MEANS ACTUATED BY LIFT OF SAID FRAME RELATIVE TO THE CHASSIS FOR AUTOMATICALLY CONTROLLING THE AIR PRESSURE IN SAID CUSHION TO LIMIT THE DEGREE OF SAID SUPPLEMENTARY SUPPORT FOR MAINTAINING THE TRACTION MEMBERS IN CONTACT WITH THE GROUND.
Claim 2
Dependent Claim
102 words
IN A VEHICLE HAVING A CHASSIS SUPPORTED ON A RUNNING GEAR COMPRISING GROUND ENGAGING TRACTION MEMBERS SUCH AS WHEELS OR RUNNERS, A LOAD BEARING FRAME MOUNTED FOR LIMITED RELATIVE VERTICAL MOVEMENT ON SAID CHASSIS, MEANS FOR MAINTAINING A PRESSURIZED AIR CUSHION BENEATH SAID VEHICLE PROVIDING SUPPLEMENTARY SUPPORT LIFTING SAID LOAD BEARING FRAME RELATIVE TO THE CHASSIS AS THE VEHICLE MOVES ALONG THE GROUND, AND MEANS ACTUATED BY LIFT OF SAID FRAME RELATIVE TO THE CHASSIS FOR AUTOMATICALLY CONTROLLING THE AIR PRESSURE IN SAID CUSHION TO LIMIT THE DEGREE OF SAID SUPPLEMENTARY SUPPORT FOR MAINTAINING THE TRACTION MEMBERS IN CONTACT WITH THE GROUND.
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) | 1970-08-07 | 1971-02-06 | 1971-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-07 | 1975-02-06 | 1975-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-07 | 1979-02-06 | 1979-08-08 | $7700.00 | Window Closed / Lapsed |