Patent US3225704A successfully refreshed from Google Patents.
US3225704A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transportation systems
Assignee: Alden Self Transit Systems Corp
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Filing: 1964-07-16
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Granted: 1965-12-28
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Expires: 1984-07-16
Abstract
No abstract record available.
Inventors
- 👤 Gilvar Martin
- 👤 William L Alden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:26
CPC Classifications
B; B61; B61B; B61B15/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
140 words
IN COMBINATION, A TRANSPORTION SYSTEM HAVING TWO SEPARATE LINES AND A JUNCTION BETWEEN SAID LINES, EACH SAID LINE INCLUDING A GENERALLY HORIZONTAL DRIVE SURFACE OF INDETERMINE LENGTH AND GUIDE MEANS INCLUDING A GENERALLY VERTICALLY DISPOSED GUIDE SURFACE COEXTENSIVE WITH EACH SAID LINE, THE VERTICALLY DISPOSED GUIDE SURFACES FO SAID TWO LINES BEING ALIGNED WITH ONE ANOTHER ADJACENT SAID JUNCTION, A VEHICLE ADAPTED TO ENGAGE SAID DRIVE SURFACE FOR MOVEMENT THEREALONG, AND GUIDE FOLLOWER MEANS CARRIED BY ID VEHICLE ADAPTED TO ENGAGE SAID GUIDE SURFACES FOR PROVIDING DIRECTIONAL CONTROL OF SAID VEHICLE WHILE SAID VEHICLE IS ON SAID TRANSPORTATION SYSTEM COMPRISING A VERTICALLY RECIPROCABLE GUIDE FOLLOWER UNIT AND CONTROL MEANS FOR MOVING SAID GUIDE FOLLOWER UNIT BETWEEN A LOWER POSITION IN ENGAGEMENT WITH ONE OF SAID GUIDE SURFACES AND AN UPPER POSITION IN ENGAGEMENT WITH THE SECOND OF SAID GUIDE SURFACES.
Claim 2
Dependent Claim
140 words
IN COMBINATION, A TRANSPORTION SYSTEM HAVING TWO SEPARATE LINES AND A JUNCTION BETWEEN SAID LINES, EACH SAID LINE INCLUDING A GENERALLY HORIZONTAL DRIVE SURFACE OF INDETERMINE LENGTH AND GUIDE MEANS INCLUDING A GENERALLY VERTICALLY DISPOSED GUIDE SURFACE COEXTENSIVE WITH EACH SAID LINE, THE VERTICALLY DISPOSED GUIDE SURFACES FO SAID TWO LINES BEING ALIGNED WITH ONE ANOTHER ADJACENT SAID JUNCTION, A VEHICLE ADAPTED TO ENGAGE SAID DRIVE SURFACE FOR MOVEMENT THEREALONG, AND GUIDE FOLLOWER MEANS CARRIED BY ID VEHICLE ADAPTED TO ENGAGE SAID GUIDE SURFACES FOR PROVIDING DIRECTIONAL CONTROL OF SAID VEHICLE WHILE SAID VEHICLE IS ON SAID TRANSPORTATION SYSTEM COMPRISING A VERTICALLY RECIPROCABLE GUIDE FOLLOWER UNIT AND CONTROL MEANS FOR MOVING SAID GUIDE FOLLOWER UNIT BETWEEN A LOWER POSITION IN ENGAGEMENT WITH ONE OF SAID GUIDE SURFACES AND AN UPPER POSITION IN ENGAGEMENT WITH THE SECOND OF SAID GUIDE SURFACES.
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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) | 1968-12-27 | 1969-06-28 | 1969-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-27 | 1973-06-28 | 1973-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-27 | 1977-06-28 | 1977-12-28 | $7700.00 | Window Closed / Lapsed |