US3227870A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic control for trains and other vehicles
Assignee: —
•
Filing: —
•
Granted: 1966-01-04
•
Expires: 1983-01-04
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:25
CPC Classifications
B; B60; B60L; B60L15/00; B60L15/02; B60L2200/00; B60L2200/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
156 words
IN COMBINATION, A VEHICLE PROVIDED WITH SPEED CONTROL MEANS INCLUDING A COIL CIRCUIT OPERABLE TO BE RESONANT AT A PREDETERMINED FREQUENCY, A CIRCUIT TO THE PROPULSION UNIT OF THE VEHICLE AND ESSENTIAL TO THE OPERATION THEREOF AND INCLUDING A SWITCH, AND A CONTROL CIRCUIT PROVIDED WITH MEANS TO DELIVER SHUNTING CURRENT FROM THE VEHICLE AND A RELAY TO OPERATE SAID SWITCH TO RENDER SAID ESSENTIAL CIRCUIT OPERATIVE, AND A CONTROL SYSTEM FOR SAID VEHICLE, SAID SYSTEM INCLUDING A SERIES OF SECTIONS EACH PROVIDED WITH A CIRCUIT TO ENERGIZE SAID COIL CIRCUIT, SAID SECTION CIRCUIT INCLUDING A RELAY ADJACENT ITS ENTRANCE END, A COIL OPERATING CIRCUIT FOR EACH SECTION INCLUDING AN OSCILLATOR ADJACENT THE EXIT END OF THAT SECTION, AND OPERABLE TO GENERATE SAID PREDETERMINED FREQUENCY, AND A SWITCH FOR EACH COIL OPERATING CIRCUIT OPERABLY ASSOCIATED WITH A PRECEDING SECTION RELAY TO BE ACTUATED THEREBY TO EFFECT DELIVERY OF CURRENT TO A SUBSEQUENT SECTION CIRCUIT AT SAID
Claim 2
Dependent Claim
156 words
IN COMBINATION, A VEHICLE PROVIDED WITH SPEED CONTROL MEANS INCLUDING A COIL CIRCUIT OPERABLE TO BE RESONANT AT A PREDETERMINED FREQUENCY, A CIRCUIT TO THE PROPULSION UNIT OF THE VEHICLE AND ESSENTIAL TO THE OPERATION THEREOF AND INCLUDING A SWITCH, AND A CONTROL CIRCUIT PROVIDED WITH MEANS TO DELIVER SHUNTING CURRENT FROM THE VEHICLE AND A RELAY TO OPERATE SAID SWITCH TO RENDER SAID ESSENTIAL CIRCUIT OPERATIVE, AND A CONTROL SYSTEM FOR SAID VEHICLE, SAID SYSTEM INCLUDING A SERIES OF SECTIONS EACH PROVIDED WITH A CIRCUIT TO ENERGIZE SAID COIL CIRCUIT, SAID SECTION CIRCUIT INCLUDING A RELAY ADJACENT ITS ENTRANCE END, A COIL OPERATING CIRCUIT FOR EACH SECTION INCLUDING AN OSCILLATOR ADJACENT THE EXIT END OF THAT SECTION, AND OPERABLE TO GENERATE SAID PREDETERMINED FREQUENCY, AND A SWITCH FOR EACH COIL OPERATING CIRCUIT OPERABLY ASSOCIATED WITH A PRECEDING SECTION RELAY TO BE ACTUATED THEREBY TO EFFECT DELIVERY OF CURRENT TO A SUBSEQUENT SECTION CIRCUIT AT SAID
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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) | 1969-01-03 | 1969-07-05 | 1970-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-03 | 1973-07-05 | 1974-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-03 | 1977-07-05 | 1978-01-04 | $7700.00 | Window Closed / Lapsed |