US3618531A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transportation system
Assignee: Individual
•
Filing: 1968-05-28
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Granted: 1971-11-09
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Expires: 1988-05-28
Abstract
Abstract A transportation system including vehicles running in a substantially continuous row between two parallel guide surfaces by means of lower and upper wheels engaging said upper and lower guide surface but being freely movable with respect thereto. The lower wheels serve for supporting and steering the vehicles and at least one upper wheel serves for controlling the appropriate inclination of the vehicle with regard to the guide surface. A guide surface may be provided with a guide track separating at bifurcations. A feeler associated with the vehicle engages the guide track, so that the vehicle will follow the one or the other branch of the guide surface at a bifurcation.
Inventors
- 👤 Willi Eichholz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:43
CPC Classifications
B; B61; B61B; B61B5/00; B61B5/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
215 words
A transportation system comprising a lower and an upper guide surface extending substantially parallel with respect to each other in spaced apart relationship and forming a specific road system independent of the conventional road system, and a plurality of individual vehicles including means for propelling each said vehicle, each vehicle having only two lower wheels spaced apart from each other in the direction of movement of the vehicle, and one upper wheel, said lower wheels engaging said lower guide surface in a substantially freely movable manner and said upper wheel engaging said upper guide surface in a substantially freely movable manner, means for urging said lower wheels and said upper wheel away from each other and towards said upper and lower surface, respectively, to an extent so that said vehicle is prevented from turning over, means for rotating one of said lower wheels about an axis extending in a direction substantially perpendicular to said lower surface for steering the vehicle, means for pivoting said upper wheel about an axis extending in a direction substantially perpendicular to said upper guide surface in response to the inclination of the vehicle with regard to said lower and said upper surface, respectively, so that the appropriate position of said vehicle with regard to said guide surface is continuously maintained.
Claim 2
Dependent Claim
215 words
A transportation system comprising a lower and an upper guide surface extending substantially parallel with respect to each other in spaced apart relationship and forming a specific road system independent of the conventional road system, and a plurality of individual vehicles including means for propelling each said vehicle, each vehicle having only two lower wheels spaced apart from each other in the direction of movement of the vehicle, and one upper wheel, said lower wheels engaging said lower guide surface in a substantially freely movable manner and said upper wheel engaging said upper guide surface in a substantially freely movable manner, means for urging said lower wheels and said upper wheel away from each other and towards said upper and lower surface, respectively, to an extent so that said vehicle is prevented from turning over, means for rotating one of said lower wheels about an axis extending in a direction substantially perpendicular to said lower surface for steering the vehicle, means for pivoting said upper wheel about an axis extending in a direction substantially perpendicular to said upper guide surface in response to the inclination of the vehicle with regard to said lower and said upper surface, respectively, so that the appropriate position of said vehicle with regard to said guide surface is continuously maintained.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-11-08 | 1975-05-10 | 1975-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-08 | 1979-05-10 | 1979-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-08 | 1983-05-10 | 1983-11-09 | $7700.00 | Window Closed / Lapsed |