Patent US3587471A successfully refreshed from Google Patents.
US3587471A
Expired / Lapsed
US
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Rapid transit system
Assignee: Individual
•
Filing: 1969-05-12
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Granted: 1971-06-28
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Expires: 1989-05-12
Abstract
Abstract A PROJECTILELIKE TRANSPORT WITH A NARROW RUNNER PROJECTING INTO A PNEUMATIC TUBE AND INTO THE SLIGHTLY RECESSED SURFACE OF ROLLS THAT ARE SUPPORTED ON HYDROSTATIC BEARINGS. WINGED CONNECTOR CARS WITH WHEELS AT THE TIPS IN SPECIAL WHEEL HOUSINGS THAT ENGAGE OVERHEAD TRACKS ON CURVES. A FLEXIBLE RAPID TRANSIT SYSTEM ADAPTABLE TO SUBSURFACE OR ELEVATED SECTIONS OF CITY OR COUNTRY SIDE.
Inventors
- 👤 Kurt P Schneider
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 01:33
CPC Classifications
B; B60; B60V; B60V3/00; B60V3/02; B60V3/04
Claims Analysis
Total Claims: 0
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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) | 1974-06-27 | 1974-12-27 | 1975-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-27 | 1978-12-27 | 1979-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-27 | 1982-12-27 | 1983-06-28 | $7700.00 | Window Closed / Lapsed |