US3373697A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transportation system
Assignee: ROBERT A HARTJE
•
Filing: 1966-03-31
•
Granted: 1968-03-19
•
Expires: 1986-03-31
Abstract
No abstract record available.
Inventors
- 👤 Robert A Hartje
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:44
CPC Classifications
B; B60; B60V; B60V3/00; B60V3/02; B60V3/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
148 words
A TRANSPORTATION SYSTEM COMPRISING: (A) A TRACK; (B) A GENERALLY HORIZONTAL WHEEL-BEARING SURFACE ON THE TRACK; (C) A GUIDE-SLOT IN THE TRACK; (D) A PAIR OF SHOE-BEARING SURFACES ON THE TRACK EXTENDING UPWARDLY AND OUTWARDLY FROM OPPOSITE EDGES OF THE WHEEL-BEARING SURFACES; (E) A VEHICLE; (F) RETRACTABLE WHEELS ON THE VEHICLE ENGAGEABLE AND DISENGAGEABLE WITH THE WHEEL-BEARING SURFACE OF THE TRACK; (G) A GUIDE ON THE VEHICLE EXTENDING INTO THE SLOT; (H) A PLURALITY OF SHOES ATTACHED TO THE VEHICLE AT OPPOSITE SIDES THEREOF AND POSITIONED FOR ENGAGEMENT WITH THE SHOE-BEARING SURFACES WHEN THE WHEELS ARE RETRACTED FROM THE WHEEL-BEARING SURFACES; (I) PASSAGES IN THE SHOES COMMUNICATING WITH EACH SUCCESSIVE SHOE; (J) MEANS FOR RAISING THE TEMPERATURE OF THE SHOES AT THE POINT OF ENGAGEMENT WITH THE SHOE-BEARING SURFACES SUFFICIENTLY HIGH TO TURN WATER ON THOSE SURFACES TO STEAM; (K) MEANS TO SUPPLY WATER TO THE SHOE-BEARING SURFACES.
Claim 2
Dependent Claim
148 words
A TRANSPORTATION SYSTEM COMPRISING: (A) A TRACK; (B) A GENERALLY HORIZONTAL WHEEL-BEARING SURFACE ON THE TRACK; (C) A GUIDE-SLOT IN THE TRACK; (D) A PAIR OF SHOE-BEARING SURFACES ON THE TRACK EXTENDING UPWARDLY AND OUTWARDLY FROM OPPOSITE EDGES OF THE WHEEL-BEARING SURFACES; (E) A VEHICLE; (F) RETRACTABLE WHEELS ON THE VEHICLE ENGAGEABLE AND DISENGAGEABLE WITH THE WHEEL-BEARING SURFACE OF THE TRACK; (G) A GUIDE ON THE VEHICLE EXTENDING INTO THE SLOT; (H) A PLURALITY OF SHOES ATTACHED TO THE VEHICLE AT OPPOSITE SIDES THEREOF AND POSITIONED FOR ENGAGEMENT WITH THE SHOE-BEARING SURFACES WHEN THE WHEELS ARE RETRACTED FROM THE WHEEL-BEARING SURFACES; (I) PASSAGES IN THE SHOES COMMUNICATING WITH EACH SUCCESSIVE SHOE; (J) MEANS FOR RAISING THE TEMPERATURE OF THE SHOES AT THE POINT OF ENGAGEMENT WITH THE SHOE-BEARING SURFACES SUFFICIENTLY HIGH TO TURN WATER ON THOSE SURFACES TO STEAM; (K) MEANS TO SUPPLY WATER TO THE SHOE-BEARING SURFACES.
References Cited (Backward Citations)
US615475A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-03-19 | 1971-09-18 | 1972-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-19 | 1975-09-18 | 1976-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-19 | 1979-09-18 | 1980-03-19 | $7700.00 | Window Closed / Lapsed |