US3198139A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Monorail systems
Assignee: Individual
•
Filing: 1963-08-19
•
Granted: 1965-08-03
•
Expires: 1983-08-19
Abstract
No abstract record available.
Inventors
- 👤 Dark John William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:28
CPC Classifications
E; E01; E01B; E01B25/00; E01B25/08; E01B25/10; B; B60; B60V; B60V3/00; B60V3/02; B60V3/04; B61; B61B; B61B13/00; B61B13/04; B61B13/06; B61K; B61K7/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
130 words
A MONOCAR SYSTEM COMPRISING A MONOCAR, A TRACK BEAM HAVING A TOP SURFACE AND OPPOSED SIDE WALLS, SAID MONOCAR BEING FREELY SUPPORTED FOR MOVEMENT ALONG SAID TRACK BEAM, AND HAVING A PLURALITY OF PAIRS OF FREELY ROTATABLE SUPPORTING ROLLERS BEARING UPON THE TWO RUNNING SURFACES; AND MEANS FOR PRODUCING REACTION FORCES BETWEEN THE SIDE WALLS OF THE BEAM AND COOPERATING MEANS CARRIED BY THE MONOCAR TO PROPEL THE MONOCAR ALONG THE BEAM; SAID PROPELLING MEANS COMPRISING ELECTRO-INDUCTION ELEMENTS CARRIED BY THE MONOCAR REACTING WITH ELECTROINDUCTION REACTION ELEMENTS ON THE SIDE WALLS OF THE BEAM; SAID REACTION ELEMENTS CARRIED BY THE BEAM COMPRISING STRIPS OF CONDUCTIVE MATERIAL EXTENDING ALONG EACH SIDE OF THE BEAM, AND THE ELEMENTS CARRIED BY THE MONOCAR COMPRISING FIELD COILS SUPPORTED IN CLOSE PROXIMITY TO SAID STRIPS.
Claim 2
Dependent Claim
130 words
A MONOCAR SYSTEM COMPRISING A MONOCAR, A TRACK BEAM HAVING A TOP SURFACE AND OPPOSED SIDE WALLS, SAID MONOCAR BEING FREELY SUPPORTED FOR MOVEMENT ALONG SAID TRACK BEAM, AND HAVING A PLURALITY OF PAIRS OF FREELY ROTATABLE SUPPORTING ROLLERS BEARING UPON THE TWO RUNNING SURFACES; AND MEANS FOR PRODUCING REACTION FORCES BETWEEN THE SIDE WALLS OF THE BEAM AND COOPERATING MEANS CARRIED BY THE MONOCAR TO PROPEL THE MONOCAR ALONG THE BEAM; SAID PROPELLING MEANS COMPRISING ELECTRO-INDUCTION ELEMENTS CARRIED BY THE MONOCAR REACTING WITH ELECTROINDUCTION REACTION ELEMENTS ON THE SIDE WALLS OF THE BEAM; SAID REACTION ELEMENTS CARRIED BY THE BEAM COMPRISING STRIPS OF CONDUCTIVE MATERIAL EXTENDING ALONG EACH SIDE OF THE BEAM, AND THE ELEMENTS CARRIED BY THE MONOCAR COMPRISING FIELD COILS SUPPORTED IN CLOSE PROXIMITY TO SAID STRIPS.
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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) | 1968-08-02 | 1969-02-01 | 1969-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-02 | 1973-02-01 | 1973-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-02 | 1977-02-01 | 1977-08-03 | $7700.00 | Window Closed / Lapsed |